ComplexZmanimCalendar class
This class extends ZmanimCalendar and provides many more zmanim than available in the ZmanimCalendar. The basis for most zmanim in this class are from the _sefer_ Yisroel Vehazmanim by Rabbi Yisrael Dovid Harfenes. As an example of the number of different _zmanim_ made available by this class, there are methods to return 14 different calculations for _alos_ (dawn) and 25 for _tzais_ available in this API. The real power of this API is the ease in calculating _zmanim_ that are not part of the library. The methods for _zmanim_ calculations not present in this class or it's superclass {link ZmanimCalendar are contained in the [AstronomicalCalendar], the base class of the calendars in our API since they are generic methods for calculating time based on degrees or time before or after [getSunrise sunrise and [getSunset sunset and are of interest for calculation beyond _zmanim_ calculations. Here are some examples.
First create the Calendar for the location you would like to calculate:
String locationName = "Lakewood, NJ"; double latitude = 40.0828; // Lakewood, NJ double longitude = 74.2094; // Lakewood, NJ double elevation = 20; // optional elevation correction in Meters // the String parameter in getTimeZone] has to be a valid timezone listed in // {link java.util.TimeZone#getAvailableIDs] TimeZone timeZone = TimeZone.getTimeZone("America/New_York"); GeoLocation location = new GeoLocation(locationName, latitude, longitude, elevation, timeZone); ComplexZmanimCalendar czc = new ComplexZmanimCalendar(location); // Optionally set the date or it will default to today's date czc.getCalendar].set(Calendar.MONTH, Calendar.FEBRUARY); czc.getCalendar].set(Calendar.DAY_OF_MONTH, 8);
Note: For locations such as Israel where the beginning and end of daylight savings time can fluctuate from
year to year, if your version of Java does not have an up to date timezone database, create a
{link java.util.SimpleTimeZone with the known start and end of DST.
To get _alos_ calculated as 14° below the horizon (as calculated in the calendars published in Montreal),
add {link AstronomicalCalendar#GEOMETRIC_ZENITH (90) to the 14° offset to get the desired time:
Date alos14 = czc.getSunriseOffsetByDegrees({link AstronomicalCalendar#GEOMETRIC_ZENITH + 14);
To get _mincha gedola_ calculated based on the _Magen Avraham (MGA)_ using a _shaah zmanis_ based on the day starting 16.1° below the horizon (and ending 16.1° after sunset) the following calculation can be used:
Date minchaGedola = czc.getTimeOffset(czc.getAlos16point1Degrees], czc.getShaahZmanis16Point1Degrees] * 6.5);
or even simpler using the included convenience methods
Date minchaGedola = czc.getMinchaGedola(czc.getAlos16point1Degrees], czc.getShaahZmanis16Point1Degrees]);
A little more complex example would be calculating zmanim that rely on a _shaah zmanis_ that is
not present in this library. While a drop more complex, it is still rather easy. An example would be to calculate
the _Trumas Hadeshen's_ _alos_ to
_tzais_ based _plag hamincha_ as calculated in the Machzikei Hadass calendar in Manchester, England.
A number of this calendar's zmanim are calculated based on a day starting at _alos_ of 12° before sunrise
and ending at _tzais_ of 7.083° after sunset. Be aware that since the _alos_ and _tzais_
do not use identical degree based offsets, this leads to _chatzos_ being at a time other than the
[getSunTransit] solar transit (solar midday). To calculate this zman, use the following steps. Note that
_plag hamincha_ is 10.75 hours after the start of the day, and the following steps are all that it takes.
Date plag = czc.getPlagHamincha(czc.getSunriseOffsetByDegrees({link AstronomicalCalendar#GEOMETRIC_ZENITH + 12), czc.getSunsetOffsetByDegrees({link AstronomicalCalendar#GEOMETRIC_ZENITH + ZENITH_7_POINT_083));
Something a drop more challenging, but still simple, would be calculating a zman using the same "complex" offset day used in the above mentioned Manchester calendar, but for a _shaos zmaniyos_ based _zman_ not not supported by this library, such as calculating the point that one should be _makpid_ not to eat on _erev Shabbos_ or _erev Yom Tov_. This is 9 _shaos zmaniyos_ into the day.
 Calculate the _shaah zmanis_ in milliseconds for this day
 Add 9 of these _shaos zmaniyos_ to alos starting at 12°
long shaahZmanis = czc.getTemporalHour(czc.getSunriseOffsetByDegrees({link AstronomicalCalendar#GEOMETRIC_ZENITH + 12), czc.getSunsetOffsetByDegrees({link AstronomicalCalendar#GEOMETRIC_ZENITH + ZENITH_7_POINT_083)); Date sofZmanAchila = getTimeOffset(czc.getSunriseOffsetByDegrees({link AstronomicalCalendar#GEOMETRIC_ZENITH + 12), shaahZmanis * 9);
Calculating this _sof zman achila_ according to the _GRA_ is simplicity itself.
Date sofZamnAchila = czc.getTimeOffset(czc.getSunrise], czc.getShaahZmanisGra] * 9);
Documentation from the {link ZmanimCalendar parent class
{inheritDocauthor © Eliyahu Hershfeld 2004  2020
 Inheritance
 Object
 AstronomicalCalendar
 ZmanimCalendar
 ComplexZmanimCalendar
Constructors
 ComplexZmanimCalendar()
 Default constructor will set a default GeoLocation, a default AstronomicalCalculator.getDefault AstronomicalCalculator and default the calendar to the current date. [...]
 ComplexZmanimCalendar.intGeoLocation(GeoLocation location)
Properties
 astronomicalCalculator ↔ AstronomicalCalculator

read / write, inherited
 geoLocation ↔ GeoLocation

read / write, inherited
 hashCode → int

The hash code for this object. [...]
readonly, inherited
 runtimeType → Type

A representation of the runtime type of the object.
readonly, inherited
Methods

getAdjustedCalendar(
) → DateTime 
Adjusts the
Calendar
to deal with edge cases where the location crosses the antimeridian. [...]inherited 
getAlos16Point1Degrees(
) → DateTime  Method to return alos (dawn) calculated when the sun is ZENITH_16_POINT_1 16.1° below the eastern geometric horizon before sunrise. This calculation is based on the same calculation of getAlos72 72 minutes but uses a degree based calculation instead of 72 exact minutes. This calculation is based on the position of the sun 72 minutes before sunrise in Jerusalem during the equinox (on March 16, about 4 days before the astronomical equinox, the day that a solar hour is 60 minutes) which calculates to 16.1° below GEOMETRIC_ZENITH geometric zenith. [...]

getAlos18Degrees(
) → DateTime  A method to return alos (dawn) calculated when the sun is ASTRONOMICAL_ZENITH 18° below the eastern geometric horizon before sunrise. [...]

getAlos19Degrees(
) → DateTime  A method to return alos (dawn) calculated when the sun is ZENITH_19_DEGREES 19° below the eastern geometric horizon before sunrise. This is the Rambam's alos according to Rabbi Moshe Kosower's Maaglei Tzedek, page 88, Ayeles Hashachar Vol. I, page 12, Yom Valayla Shel Torah, Ch. 34, p. 222 and Rabbi Yaakov Shakow's Luach Ikvei Hayom. [...]

getAlos19Point8Degrees(
) → DateTime  Method to return alos (dawn) calculated when the sun is ZENITH_19_POINT_8 19.8° below the eastern geometric horizon before sunrise. This calculation is based on the same calculation of getAlos90 90 minutes but uses a degree based calculation instead of 90 exact minutes. This calculation is based on the position of the sun 90 minutes before sunrise in Jerusalem during the equinox (on March 16, about 4 days before the astronomical equinox, the day that a solar hour is 60 minutes) which calculates to 19.8° below GEOMETRIC_ZENITH geometric zenith [...]

getAlos26Degrees(
) → DateTime  A method to return alos (dawn) calculated when the sun is ZENITH_26_DEGREES 26° below the eastern geometric horizon before sunrise. This calculation is based on the same calculation of getAlos120 120 minutes but uses a degree based calculation instead of 120 exact minutes. This calculation is based on the position of the sun 120 minutes before sunrise in Jerusalem during the equinox (on March 16, about 4 days before the astronomical equinox, the day that a solar hour is 60 minutes) which calculates to 26° below GEOMETRIC_ZENITH geometric zenith. [...]

getAlos60(
) → DateTime  Method to return alos (dawn) calculated as 60 minutes before sunrise. This is the time to walk the distance of 4 Mil at 15 minutes a Mil. This seems to be the opinion of the Chavas Yair in the Mekor Chaim, Orach Chaim Ch. 90, though the Mekor chaim in Ch. 58 and in the Chut Hashani Cha 97 states that a a person walks 3 and a 1/3 mil in an hour, or an 18 minute mil. Also see the Divrei Malkiel Vol. 4, Ch. 20, page 34 who mentions the 15 minute mil lechumra by baking matzos. Also see the Maharik Ch. 173 where the questioner quoting the Ra'avan is of the opinion that the time to walk a mil is 15 minutes (5 mil in a little over an hour). There are many who believe that there is a ta'us sofer (scribe's error) in the Ra'avan, and it should 4 mil in a little over an hour, or an 18 minute mil. Time based offset calculations are based on the opinion of the Rishonim who stated that the time of the neshef (time between dawn and sunrise) does not vary by the time of year or location but purely depends on the time it takes to walk the distance of 4* mil. getTzaisGeonim9Point75Degrees is a related zman that is a degree based calculation based on 60 minutes. [...]

getAlos72(
) → DateTime 
Method to return alos (dawn) calculated using 72 minutes before getSunrise sunrise or
getSeaLevelSunrise sea level sunrise (depending on the isUseElevation setting). This time
is based on the time to walk the distance of 4 Mil at 18 minutes a Mil. The 72 minute time (but
not the concept of fixed minutes) is based on the opinion that the time of the Neshef (twilight between
dawn and sunrise) does not vary by the time of year or location but depends on the time it takes to walk the
distance of 4 Mil. [...]
inherited

getAlos72Zmanis(
) → DateTime  Method to return alos (dawn) calculated using 72 minutes zmaniyos or 1/10th of the day before sunrise. This is based on an 18 minute Mil so the time for 4 Mil is 72 minutes which is 1/10th of a day (12 * 60 = 720) based on the a day being from getSeaLevelSunrise sea level sunrise to getSeaLevelSunrise sea level sunset or [getSunrise sunrise to getSunset sunset (depending on the isUseElevation setting). The actual calculation is getSeaLevelSunrise ( getShaahZmanisGra * 1.2). This calculation is used in the calendars published by Hisachdus Harabanim D'Artzos Habris Ve'Canada [...]

getAlos90(
) → DateTime  Method to return alos (dawn) calculated using 90 minutes before getSeaLevelSunrise sea level sunrise based on the time to walk the distance of 4 Mil at 22.5 minutes a Mil. Time based offset calculations for alos are based on the opinion of the Rishonim who stated that the time of the Neshef (time between dawn and sunrise) does not vary by the time of year or location but purely depends on the time it takes to walk the distance of 4 Mil. [...]

getAlos90Zmanis(
) → DateTime  Method to return alos (dawn) calculated using 90 minutes zmaniyos or 1/8th of the day before getSunrise sunrise or getSeaLevelSunrise sea level sunrise (depending on the isUseElevation setting). This is based on a 22.5 minute Mil so the time for 4 Mil is 90 minutes which is 1/8th of a day (12 * 60) / 8 = 90 The day is calculated from getSeaLevelSunrise sea level sunrise to getSeaLevelSunrise sea level sunset or getSunrise sunrise to getSunset sunset (depending on the isUseElevation. The actual calculation used is getSunrise  ( getShaahZmanisGra * 1.5). [...]

getAlos96(
) → DateTime  Method to return alos (dawn) calculated using 96 minutes before before getSunrise sunrise or getSeaLevelSunrise sea level sunrise (depending on the isUseElevation setting) that is based on the time to walk the distance of 4 Mil at 24 minutes a Mil. Time based offset calculations for alos are based on the opinion of the Rishonim who stated that the time of the Neshef (time between dawn and sunrise) does not vary by the time of year or location but purely depends on the time it takes to walk the distance of 4 Mil. [...]

getAlos96Zmanis(
) → DateTime  This method returns alos (dawn) calculated using 96 minutes zmaniyos or 1/7.5th of the day before getSunrise sunrise or getSeaLevelSunrise sea level sunrise (depending on the isUseElevation setting). This is based on a 24 minute Mil so the time for 4 Mil is 96 minutes which is 1/7.5th of a day (12 * 60 / 7.5 = 96). The day is calculated from [getSeaLevelSunrise sea level sunrise to getSeaLevelSunrise sea level sunset or getSunrise sunrise to getSunset sunset (depending on the isUseElevation. The actual calculation used is getSunrise  ( getShaahZmanisGra * 1.6). [...]

getAlos120(
) → DateTime  Method to return alos (dawn) calculated using 120 minutes before getSeaLevelSunrise sea level sunrise (no adjustment for elevation is made) based on the time to walk the distance of 5 Mil( Ula) at 24 minutes a Mil. Time based offset calculations for alos are based on the opinion of the Rishonim who stated that the time of the Neshef (time between dawn and sunrise) does not vary by the time of year or location but purely depends on the time it takes to walk the distance of 5 Mil(Ula). [...]

getAlos120Zmanis(
) → DateTime  This method returns alos (dawn) calculated using 120 minutes zmaniyos or 1/6th of the day before getSunrise sunrise or getSeaLevelSunrise sea level sunrise (depending on the {link #isUseElevation] setting). This is based on a 24 minute Mil so the time for 5 Mil is 120 minutes which is 1/6th of a day (12 * 60 / 6 = 120). The day is calculated from getSeaLevelSunrise sea level sunrise to [getSeaLevelSunrise sea level sunset or getSunrise sunrise to getSunset sunset (depending on the isUseElevation. The actual calculation used is getSunrise  ( getShaahZmanisGra * 2). [...]

getAlosBaalHatanya(
) → DateTime  Returns the Baal Hatanya's alos (dawn) calculated as the time when the sun is 16.9° below the eastern GEOMETRIC_ZENITH geometric horizon before [getSunrise sunrise. For more information the source of 16.9° see ZENITH_16_POINT_9. [...]

getAlosHashachar(
) → DateTime 
Returns alos (dawn) based on the time when the sun is ZENITH_16_POINT_1 16.1° below the
eastern GEOMETRIC_ZENITH geometric horizon before getSunrise. This is based on the
calculation that the time between dawn and sunrise (and sunset to nightfall) is 72 minutes, the time that is
takes to walk 4 mil at 18 minutes a mil (Rambam
and others). The sun's position at 72 minutes before
getSunrise sunrise
in Jerusalem on the equinox (on March 16, about 4 days before the astronomical equinox, the day that a solar hour is 60 minutes) is 16.1° below. See the GEOMETRIC_ZENITH constant. [...]inherited 
getAstronomicalCalculator(
) → AstronomicalCalculator 
A method that returns the currently set AstronomicalCalculator. [...]
inherited

getAteretTorahSunsetOffset(
) → double  Returns the offset in minutes after sunset used to calculate sunset for the Ateret Torah zmanim. The default value is 40 minutes. This affects most zmanim, since almost all zmanim use subset as part of their calculation. [...]

getBainHasmashosRT2Stars(
) → DateTime  This method returns bain hashmashos of Rabbeinu Tam calculated according to the opinion of the Divrei Yosef (see Yisrael Vehazmanim) calculated 5/18th (27.77%) of the time between alos (calculated as 19.8° before sunrise) and sunrise. This is added to sunset to arrive at the time for bain hashmashos of Rabbeinu Tam). [...]

getBainHasmashosRT13Point5MinutesBefore7Point083Degrees(
) → DateTime  This method returns the time of bain hashmashos based on the calculation of 13.5 minutes (3/4 of an 18 minute Mil before shkiah calculated as getTzaisGeonim7Point083Degrees 7.083°. [...]

getBainHasmashosRT13Point24Degrees(
) → DateTime  Method to return Bain Hashmashos of Rabbeinu Tam calculated when the sun is ZENITH_13_POINT_24 13.24° below the western GEOMETRIC_ZENITH geometric horizon (90°) after sunset. This calculation is based on the same calculation of getBainHasmashosRT58Point5Minutes Bain Hashmashos Rabbeinu Tam 58.5 minutes but uses a degree based calculation instead of 58.5 exact minutes. This calculation is based on the position of the sun 58.5 minutes after sunset in Jerusalem during the equinox (on March 16, about 4 days before the astronomical equinox, the day that a solar hour is 60 minutes) which calculates to 13.24° below GEOMETRIC_ZENITH geometric zenith. NOTE: As per Yisrael Vehazmanim Vol. III page 1028 No 50, a dip of slightly less than 13° should be used. Calculations show that the proper dip to be 13.2456° (truncated to 13.24 that provides about 1.5 second earlier (lechumra) time) below the horizon at that time. This makes a difference of 1 minute and 10 seconds in Jerusalem during the Equinox, and 1 minute 29 seconds during the solstice as compared to the proper 13.24° versus 13°. For NY during the solstice, the difference is 1 minute 56 seconds. [...]

getBainHasmashosRT58Point5Minutes(
) → DateTime  This method returns Bain Hashmashos of Rabbeinu Tam calculated as a 58.5 minute offset after sunset. Bain hashmashos is 3/4 of a Mil before tzais or 3 1/4 Mil after sunset. With a Mil calculated as 18 minutes, 3.25 * 18 = 58.5 minutes. [...]

getBeginAstronomicalTwilight(
) → DateTime 
A method that returns the beginning of astronomical twilight using a zenith of {@link #ASTRONOMICAL_ZENITH
108°}. [...]
inherited

getBeginCivilTwilight(
) → DateTime 
A method that returns the beginning of civil twilight (dawn) using a zenith of {@link #CIVIL_ZENITH 96°}. [...]
inherited

getBeginNauticalTwilight(
) → DateTime 
A method that returns the beginning of nautical twilight using a zenith of {@link #NAUTICAL_ZENITH 102°}. [...]
inherited

getCalendar(
) → DateTime 
returns the Calendar object encapsulated in this class. [...]
inherited

getCandleLighting(
) → DateTime 
A method to return candle lighting time, calculated as getCandleLightingOffset minutes before
getSeaLevelSunset sea level sunset. This will return the time for any day of the week, since it can be
used to calculate candle lighting time for Yom Tov (midweek holidays) as well. Elevation adjustments
are intentionally not performed by this method, but you can calculate it by passing the elevation adjusted sunset
to getTimeOffset. [...]
inherited

getCandleLightingOffset(
) → double 
A method to get the offset in minutes before AstronomicalCalendar.getSeaLevelSunset sea level sunset which
is used in calculating candle lighting time. The default time used is 18 minutes before sea level sunset. Some
calendars use 15 minutes, while the custom in Jerusalem is to use a 40 minute offset. Please check the local custom
for candle lighting time. [...]
inherited

getChatzos(
) → DateTime 
This method returns chatzos (midday) following most opinions that chatzos is the midpoint
between getSeaLevelSunrise sea level sunrise and getSeaLevelSunset sea level sunset. A day
starting at alos and ending at tzais using the same time or degree offset will also return
the same time. The returned value is identical to getSunTransit. In reality due to lengthening or
shortening of day, this is not necessarily the exact midpoint of the day, but it is very close. [...]
inherited

getDateFromTime(
double time, bool isSunrise) → DateTime 
A method that returns a
Date
from the time passed in as a parameter. [...]inherited 
getElevationAdjustedSunrise(
) → DateTime 
This method will return getSeaLevelSunrise sea level sunrise if isUseElevation is false
(the default), or elevation adjusted AstronomicalCalendar.getSunrise if it is true. This allows relevant zmanim
in this and extending classes (such as the ComplexZmanimCalendar to automatically adjust to the elevation setting. [...]
inherited

getElevationAdjustedSunset(
) → DateTime 
This method will return getSeaLevelSunrise sea level sunrise} if isUseElevation is false
(the default), or elevation adjusted AstronomicalCalendar.getSunrise if it is true. This allows relevant zmanim
in this and extending classes (such as the ComplexZmanimCalendar to automatically adjust to the elevation setting. [...]
inherited

getEndAstronomicalTwilight(
) → DateTime 
A method that returns the end of astronomical twilight using a zenith of {@link #ASTRONOMICAL_ZENITH 108°}. [...]
inherited

getEndCivilTwilight(
) → DateTime 
A method that returns the end of civil twilight using a zenith of {@link #CIVIL_ZENITH 96°}. [...]
inherited

getEndNauticalTwilight(
) → DateTime 
A method that returns the end of nautical twilight using a zenith of {@link #NAUTICAL_ZENITH 102°}. [...]
inherited

getFixedLocalChatzos(
) → DateTime  A method that returns the local time for fixed chatzos. This time is noon and midnight adjusted from standard time to account for the local latitude. The 360° of the globe divided by 24 calculates to 15° per hour with 4 minutes per degree, so at a longitude of 0 , 15, 30 etc... Chatzos in 12:00 noon. Lakewood, N.J., whose longitude is 74.2094, is 0.7906 away from the closest multiple of 15 at 75°. This is multiplied by 4 to yield 3 minutes and 10 seconds for a chatzos of 11:56:50. This method is not tied to the theoretical 15° timezones, but will adjust to the actual timezone and Daylight saving time. [...]

getGeoLocation(
) → GeoLocation 
A method that returns the currently set {@link GeoLocation} which contains location information used for the
astronomical calculations. [...]
inherited

getMidnightLastNight(
) → DateTime  Used by Molad based zmanim to determine if zmanim occur during the current day. see getMoladBasedTime return previous midnight

getMidnightTonight(
) → DateTime  Used by Molad based zmanim to determine if zmanim occur during the current day. see getMoladBasedTime return following midnight

getMinchaGedola(
[DateTime startOfDay, DateTime endOfDay]) → DateTime 
A generic method for calculating the latest mincha gedola (the earliest time to recite the mincha prayers)
that is 6.5 * shaos zmaniyos (temporal hours) after the start of the day, calculated using the start and end
of the day passed to this method.
The time from the start of day to the end of day are divided into 12 shaos zmaniyos (temporal hours), and
mincha gedola is calculated as 6.5 of those shaos zmaniyos after the beginning of the day. As an
example, passing getSunrise sunrise and getSunset sunset or getSeaLevelSunrise sea level
sunrise and getSeaLevelSunset sea level sunset (depending on the isUseElevation elevation
setting) to this method will return mincha gedola according to the opinion of the
GRA. [...]
inherited

getMinchaGedola16Point1Degrees(
) → DateTime  This method returns the time of mincha gedola according to the Magen Avraham with the day starting and ending 16.1° below the horizon. This is the earliest time to pray mincha. For more information on this see the documentation on getMinchaGedola mincha gedola. This is calculated as 6.5 getTemporalHour solar hours after alos. The calculation used is 6.5 * getShaahZmanis16Point1Degrees after getAlos16Point1Degrees alos. [...]

getMinchaGedola30Minutes(
) → DateTime  This method returns mincha gedola calculated as 30 minutes after getChatzos chatzos and not 1/2 of a getShaahZmanisGra shaah zmanis after getChatzos chatzos as calculated by [getMinchaGedola. Some use this time to delay the start of mincha in the winter when 1/2 of a getShaahZmanisGra shaah zmanis is less than 30 minutes. See getMinchaGedolaGreaterThan30for a convenience method that returns the later of the 2 calculations. One should not use this time to start mincha before the standard getMinchaGedola mincha gedola. See Shulchan Aruch Orach Chayim Siman Raish Lamed Gimel seif alef and the Shaar Hatziyon seif katan ches. todo Add hyperlinks to documentation. [...]

getMinchaGedola72Minutes(
) → DateTime  This method returns the time of mincha gedola according to the Magen Avraham with the day starting 72 minutes before sunrise and ending 72 minutes after sunset. This is the earliest time to pray mincha. For more information on this see the documentation on getMinchaGedola mincha gedola. This is calculated as 6.5 getTemporalHour solar hours after alos. The calculation used is 6.5 * getShaahZmanis72Minutes after getAlos72 alos. [...]

getMinchaGedolaAteretTorah(
) → DateTime  This method returns the time of mincha gedola based on the calculation of Chacham Yosef HarariRaful of Yeshivat Ateret Torah, that the day starts getAlos72Zmanis 1/10th of the day before sunrise and is usually calculated as ending getTzaisAteretTorah 40 minutes after sunset (configurable to any offset via [setAteretTorahSunsetOffset(double)). This is the preferred earliest time to pray mincha according to the opinion of the Rambam and others. For more information on this see the documentation on getMinchaGedola mincha gedola. This is calculated as 6.5 getShaahZmanisAteretTorah solar hours after alos. The calculation used is 6.5 * getShaahZmanisAteretTorah after getAlos72Zmanis alos. [...]

getMinchaGedolaBaalHatanya(
) → DateTime  This method returns the time of mincha gedola. Mincha gedola is the earliest time one can pray mincha. The Rambam is of the opinion that it is better to delay mincha until getMinchaKetanaBaalHatanya mincha ketana while the Ra"sh, Tur, GRA and others are of the opinion that mincha can be prayed lechatchila starting at mincha gedola. This is calculated as 6.5 getShaahZmanisBaalHatanya sea level solar hours after getSunriseBaalHatanya netz amiti (sunrise). This calculation is based on the opinion of the Baal Hatanya that the day is calculated from sunrise to sunset. This returns the time 6.5 * getShaahZmanisBaalHatanya after getSunriseBaalHatanya netz amiti ("real" sunrise). [...]

getMinchaGedolaBaalHatanyaGreaterThan30(
) → DateTime  This is a convenience method that returns the later of getMinchaGedolaBaalHatanya and getMinchaGedola30Minutes. In the winter when 1/2 of a getShaahZmanisBaalHatanya shaah zmanis is less than 30 minutes getMinchaGedola30Minutes will be returned, otherwise getMinchaGedolaBaalHatanya will be returned. [...]

getMinchaGedolaGreaterThan30(
) → DateTime  This is a convenience method that returns the later of getMinchaGedola and getMinchaGedola30Minutes. In the winter when 1/2 of a getShaahZmanisGra shaah zmanis is less than 30 minutes getMinchaGedola30Minutes will be returned, otherwise getMinchaGedola will be returned. [...]

getMinchaKetana(
[DateTime startOfDay, DateTime endOfDay]) → DateTime 
A generic method for calculating mincha ketana, (the preferred time to recite the mincha prayers in
the opinion of the Rambam and others) that is
9.5 * shaos zmaniyos (temporal hours) after the start of the day, calculated using the start and end
of the day passed to this method.
The time from the start of day to the end of day are divided into 12 shaos zmaniyos (temporal hours), and
mincha ketana is calculated as 9.5 of those shaos zmaniyos after the beginning of the day. As an
example, passing getSunrise sunrise and getSunset sunset or getSeaLevelSunrise sea level
sunrise and getSeaLevelSunset sea level sunset (depending on the isUseElevation elevation
setting) to this method will return mincha ketana according to the opinion of the
GRA. [...]
inherited

getMinchaKetana16Point1Degrees(
) → DateTime  This method returns the time of mincha ketana according to the Magen Avraham with the day starting and ending 16.1° below the horizon. This is the preferred earliest time to pray mincha according to the opinion of the Rambam and others. For more information on this see the documentation on getMinchaGedola mincha gedola. This is calculated as 9.5 getTemporalHour solar hours after alos. The calculation used is 9.5 * getShaahZmanis16Point1Degrees after getAlos16Point1Degrees alos. [...]

getMinchaKetana72Minutes(
) → DateTime  This method returns the time of mincha ketana according to the Magen Avraham with the day starting 72 minutes before sunrise and ending 72 minutes after sunset. This is the preferred earliest time to pray mincha according to the opinion of the Rambam and others. For more information on this see the documentation on getMinchaGedola mincha gedola. This is calculated as 9.5 getShaahZmanis72Minutes after alos. The calculation used is 9.5 * getShaahZmanis72Minutes after getAlos72 alos. [...]

getMinchaKetanaAteretTorah(
) → DateTime  This method returns the time of mincha ketana based on the calculation of Chacham Yosef HarariRaful of Yeshivat Ateret Torah, that the day starts getAlos72Zmanis 1/10th of the day before sunrise and is usually calculated as ending getTzaisAteretTorah 40 minutes after sunset (configurable to any offset via [setAteretTorahSunsetOffset(double)). This is the preferred earliest time to pray mincha according to the opinion of the Rambam and others. For more information on this see the documentation on getMinchaGedola mincha gedola. This is calculated as 9.5 getShaahZmanisAteretTorah solar hours after getAlos72Zmanis alos. The calculation used is 9.5 * getShaahZmanisAteretTorah after getAlos72Zmanis alos. [...]

getMinchaKetanaBaalHatanya(
) → DateTime  This method returns the time of mincha ketana. This is the preferred earliest time to pray mincha in the opinion of the Rambam and others. For more information on this see the documentation on getMinchaGedolaBaalHatanya mincha gedola. This is calculated as 9.5 getShaahZmanisBaalHatanya sea level solar hours after getSunriseBaalHatanya netz amiti (sunrise). This calculation is calculated based on the opinion of the Baal Hatanya that the day is calculated from sunrise to sunset. This returns the time 9.5 * getShaahZmanisBaalHatanya after getSunriseBaalHatanya netz amiti (sunrise). [...]

getMisheyakir7Point65Degrees(
) → DateTime  This method returns misheyakir based on the position of the sun when it is ZENITH_7_POINT_65 7.65° below GEOMETRIC_ZENITH geometric zenith (90°). The degrees are based on a 35/36 minute zman during the equinox (on March 16, about 4 days before the astronomical equinox, the day that a solar hour is 60 minutes) when the neshef (twilight) is the shortest. This time is based on Rabbi Moshe Feinstein who writes in Ohr Hachaim Vol. 4, Ch. 6 that misheyakir in New York is 3540 minutes before sunset, something that is a drop less than 8°. Rabbi Yisroel Taplin in Zmanei Yisrael (page 117) notes that Rabbi Yaakov Kamenetsky stated that it is not less than 36 minutes before sunrise (maybe it is 40 minutes). Sefer Yisrael Vehazmanim (p. 7) quotes the Tamar Yifrach in the name of the Satmar Rov that one should be stringent not consider misheyakir before 36 minutes. This is also the accepted minhag in Lakewood that is used in the Yeshiva. This follows the opinion of Rabbi Shmuel Kamenetsky who provided the time of 35/36 minutes, but did not provide a degree based time. Since this zman depends on the level of light, Rabbi Yaakov Shakow presented this degree based calculations to Rabbi Kamenetsky who agreed to them. [...]

getMisheyakir9Point5Degrees(
) → DateTime  This method returns misheyakir based on the position of the sun when it is ZENITH_9_POINT_5 9.5° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is based on Rabbi Dovid Kronglass's Calculation of 45 minutes in Baltimore as mentioned in <a href= Divrei Chachamim No. 24 brought down by the Birur Halacha, Tinyana, Ch. 18. This calculates to 9.5°. Also see Rabbi Yaakov Yitzchok Neiman in Kovetz Eitz Chaim Vol. 9, p. 202 that the Vyaan Yosef did not want to rely on times earlier than 45 minutes in New York. This zman is also used in the calendars published by Rabbi Hershel Edelstein. As mentioned in the Yisroel Vehazmanim, Rabbi Edelstein who was given the 45 minute zman by Rabbi Bick. The calendars published by the Edot Hamizrach communities also use this zman. This also follows the opinion of Rabbi Shmuel Kamenetsky who provided the time of 36 and 45 minutes, but did not provide a degree based time. Since this zman depends on the level of light, Rabbi Yaakov Shakow presented these degree based times to Rabbi Shmuel Kamenetsky who agreed to them. [...]

getMisheyakir10Point2Degrees(
) → DateTime  This method returns misheyakir based on the position of the sun when it is ZENITH_10_POINT_2 10.2° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for calculating misheyakir according to some opinions. This calculation is based on the position of the sun 45 minutes before [getSunrise sunrise in Jerusalem during the equinox (on March 16, about 4 days before the astronomical equinox, the day that a solar hour is 60 minutes) which calculates to 10.2° below GEOMETRIC_ZENITH geometric zenith [...]

getMisheyakir11Degrees(
) → DateTime  This method returns misheyakir based on the position of the sun when it is ZENITH_11_DEGREES 11° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for calculating misheyakir according to some opinions. This calculation is based on the position of the sun 48 minutes before [getSunrise sunrise in Jerusalem during the equinox (on March 16, about 4 days before the astronomical equinox, the day that a solar hour is 60 minutes) which calculates to 11° below GEOMETRIC_ZENITH geometric zenith [...]

getMisheyakir11Point5Degrees(
) → DateTime  This method returns misheyakir based on the position of the sun when it is ZENITH_11_DEGREES 11.5° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for calculating misheyakir according to some opinions. This calculation is based on the position of the sun 52 minutes before [getSunrise sunrise in Jerusalem during the equinox (on March 16, about 4 days before the astronomical equinox, the day that a solar hour is 60 minutes) which calculates to 11.5° below GEOMETRIC_ZENITH geometric zenith [...]

getMoladBasedTime(
DateTime moladBasedTime, DateTime alos, DateTime tzais, bool techila) → DateTime  Returns the Date of the molad based time if it occurs on the current date.Since Kiddush Levana can only be said during the day, there are parameters to limit it to between alos and tzais. If the time occurs between alos and tzais, tzais will be returned [...]

getPlagAlos16Point1ToTzaisGeonim7Point083Degrees(
) → DateTime  This method returns the time of plag hamincha based on the opinion that the day starts at getAlos16Point1Degrees alos 16.1° and ends at getTzaisGeonim7Point083Degrees tzais. 10.75 shaos zmaniyos are calculated based on this day and added to getAlos16Point1Degrees alos to reach this time. This time is 10.75 shaos zmaniyos (temporal hours) after getAlos16Point1Degrees dawn based on the opinion that the day is calculated from a getAlos16Point1Degrees dawn of 16.1 degrees before sunrise to getTzaisGeonim7Point083Degrees tzais . This returns the time of 10.75 * the calculated shaah zmanis after getAlos16Point1Degrees dawn. [...]

getPlagAlosToSunset(
) → DateTime  This method returns the time of plag hamincha based on the opinion that the day starts at getAlos16Point1Degrees alos 16.1° and ends at getSunset sunset. 10.75 shaos zmaniyos are calculated based on this day and added to getAlos16Point1Degrees alos to reach this time. This time is 10.75 shaos zmaniyos (temporal hours) after getAlos16Point1Degrees dawn based on the opinion that the day is calculated from a getAlos16Point1Degrees dawn of 16.1 degrees before sunrise to getSeaLevelSunset sea level sunset. This returns the time of 10.75 * the calculated shaah zmanis after getAlos16Point1Degrees dawn. [...]

getPlagHamincha(
[DateTime startOfDay, DateTime endOfDay]) → DateTime 
A generic method for calculating plag hamincha (the earliest time that Shabbos can be started) that is
10.75 hours after the start of the day, (or 1.25 hours before the end of the day) based on the start and end of
the day passed to the method.
The time from the start of day to the end of day are divided into 12 shaos zmaniyos (temporal hours), and
plag hamincha is calculated as 10.75 of those shaos zmaniyos after the beginning of the day. As an
example, passing getSunrise sunrise and getSunset sunset or getSeaLevelSunrise sea level
sunrise and getSeaLevelSunset sea level sunset (depending on the isUseElevation elevation
setting) to this method will return plag mincha according to the opinion of the
GRA. [...]
inherited

getPlagHamincha16Point1Degrees(
) → DateTime  This method returns the time of plag hamincha based on the opinion that the day starts at getAlos16Point1Degrees alos 16.1° and ends at getTzais16Point1Degrees tzais 16.1°. This is calculated as 10.75 hours zmaniyos after getAlos16Point1Degrees dawn. The formula used is 10.75 * getShaahZmanis16Point1Degrees after getAlos16Point1Degrees. [...]

getPlagHamincha18Degrees(
) → DateTime  This method returns the time of plag hamincha based on the opinion that the day starts at getAlos18Degrees alos 18° and ends at getTzais18Degrees tzais 18° . This is calculated as 10.75 hours zmaniyos after getAlos18Degrees dawn. The formula used is 10.75 * getShaahZmanis18Degrees after getAlos18Degrees. [...]

getPlagHamincha19Point8Degrees(
) → DateTime  This method returns the time of plag hamincha based on the opinion that the day starts at getAlos19Point8Degrees alos 19.8° and ends at getTzais19Point8Degrees tzais 19.8°. This is calculated as 10.75 hours zmaniyos after getAlos19Point8Degrees dawn. The formula used is 10.75 * getShaahZmanis19Point8Degrees after getAlos19Point8Degrees. [...]

getPlagHamincha26Degrees(
) → DateTime  This method returns the time of plag hamincha based on the opinion that the day starts at getAlos26Degrees alos 26° and ends at getTzais26Degrees tzais 26° . This is calculated as 10.75 hours zmaniyos after getAlos26Degrees dawn. The formula used is 10.75 * getShaahZmanis26Degrees after getAlos26Degrees. [...]

getPlagHamincha60Minutes(
) → DateTime  This method returns the time of plag hamincha according to the Magen Avraham with the day starting 60 minutes before sunrise and ending 60 minutes after sunset. This is calculated as 10.75 hours after getAlos60 dawn. The formula used is 10.75 getShaahZmanis60Minutes after getAlos60. [...]

getPlagHamincha72Minutes(
) → DateTime  This method returns the time of plag hamincha according to the Magen Avraham with the day starting 72 minutes before sunrise and ending 72 minutes after sunset. This is calculated as 10.75 hours after getAlos72 dawn. The formula used is 10.75 getShaahZmanis72Minutes after getAlos72. [...]

getPlagHamincha72MinutesZmanis(
) → DateTime  This method returns the time of plag hamincha. This is calculated as 10.75 hours after getAlos72Zmanis dawn. The formula used is 10.75 * getShaahZmanis72MinutesZmanis after getAlos72Zmanis dawn. [...]

getPlagHamincha90Minutes(
) → DateTime  This method returns the time of plag hamincha according to the Magen Avraham with the day starting 90 minutes before sunrise and ending 90 minutes after sunset. This is calculated as 10.75 hours after getAlos90 dawn. The formula used is 10.75 getShaahZmanis90Minutes after getAlos90. [...]

getPlagHamincha90MinutesZmanis(
) → DateTime  This method returns the time of plag hamincha. This is calculated as 10.75 hours after getAlos90Zmanis dawn. The formula used is 10.75 * getShaahZmanis90MinutesZmanis after getAlos90Zmanis dawn. [...]

getPlagHamincha96Minutes(
) → DateTime  This method returns the time of plag hamincha according to the Magen Avraham with the day starting 96 minutes before sunrise and ending 96 minutes after sunset. This is calculated as 10.75 hours after getAlos96 dawn. The formula used is 10.75 getShaahZmanis96Minutes after getAlos96. [...]

getPlagHamincha96MinutesZmanis(
) → DateTime  This method returns the time of plag hamincha. This is calculated as 10.75 hours after getAlos96Zmanis dawn. The formula used is 10.75 * getShaahZmanis96MinutesZmanis after getAlos96Zmanis dawn. [...]

getPlagHamincha120Minutes(
) → DateTime  This method returns the time of plag hamincha according to the Magen Avraham with the day starting 120 minutes before sunrise and ending 120 minutes after sunset. This is calculated as 10.75 hours after getAlos120 dawn 120 minutes. The formula used is 10.75 getShaahZmanis120Minutes after getAlos120. [...]

getPlagHamincha120MinutesZmanis(
) → DateTime  This method returns the time of plag hamincha based on sunrise being 120 minutes zmaniyos or 1/6th of the day before sunrise. This is calculated as 10.75 hours after getAlos120Zmanis dawn. The formula used is 10.75 * getShaahZmanis120MinutesZmanis after getAlos120Zmanis dawn. [...]

getPlagHaminchaAteretTorah(
) → DateTime  This method returns the time of plag hamincha based on the calculation of Chacham Yosef HarariRaful of Yeshivat Ateret Torah, that the day starts getAlos72Zmanis 1/10th of the day before sunrise and is usually calculated as ending getTzaisAteretTorah 40 minutes after sunset (configurable to any offset via [setAteretTorahSunsetOffset(double)). shaos zmaniyos are calculated based on this day and added to getAlos72Zmanis alos to reach this time. This time is 10.75 getShaahZmanisAteretTorah shaos zmaniyos (temporal hours) after getAlos72Zmanis dawn. [...]

getPlagHaminchaBaalHatanya(
) → DateTime  This method returns the time of plag hamincha. This is calculated as 10.75 hours after sunrise. This calculation is based on the opinion of the Baal Hatanya that the day is calculated from sunrise to sunset. This returns the time 10.75 * getShaahZmanisBaalHatanya after getSunriseBaalHatanya netz amiti (sunrise). [...]

getSeaLevelSunrise(
) → DateTime 
A method that returns the sunrise without {@link AstronomicalCalculator#getElevationAdjustment(double) elevation
adjustment}. Nonsunrise and sunset calculations such as dawn and dusk, depend on the amount of visible light,
something that is not affected by elevation. This method returns sunrise calculated at sea level. This forms the
base for dawn calculations that are calculated as a dip below the horizon before sunrise. [...]
inherited

getSeaLevelSunset(
) → DateTime 
A method that returns the sunset without {@link AstronomicalCalculator#getElevationAdjustment(double) elevation
adjustment}. Nonsunrise and sunset calculations such as dawn and dusk, depend on the amount of visible light,
something that is not affected by elevation. This method returns sunset calculated at sea level. This forms the
base for dusk calculations that are calculated as a dip below the horizon after sunset. [...]
inherited

getShaahZmanis16Point1Degrees(
) → double  Method to return a shaah zmanis (temporal hour) calculated using a dip of 16.1°. This calculation divides the day based on the opinion that the day runs from dawn to dusk. Dawn for this calculation is when the sun is 16.1° below the eastern geometric horizon before sunrise and dusk is when the sun is 16.1° below the western geometric horizon after sunset. This day is split into 12 equal parts with each part being a shaah zmanis. [...]

getShaahZmanis18Degrees(
) → double  Method to return a shaah zmanis (temporal hour) calculated using a 18° dip. This calculation divides the day based on the opinion of the Magen Avraham (MGA) that the day runs from dawn to dusk. Dawn for this calculation is when the sun is 18° below the eastern geometric horizon before sunrise. Dusk for this is when the sun is 18° below the western geometric horizon after sunset. This day is split into 12 equal parts with each part being a shaah zmanis. [...]

getShaahZmanis19Point8Degrees(
) → double  Method to return a shaah zmanis (temporal hour) calculated using a 19.8° dip. This calculation divides the day based on the opinion of the Magen Avraham (MGA) that the day runs from dawn to dusk. Dawn for this calculation is when the sun is 19.8° below the eastern geometric horizon before sunrise. Dusk for this is when the sun is 19.8° below the western geometric horizon after sunset. This day is split into 12 equal parts with each part being a shaah zmanis. [...]

getShaahZmanis26Degrees(
) → double  Method to return a shaah zmanis (temporal hour) calculated using a dip of 26°. This calculation divides the day based on the opinion of the Magen Avraham (MGA) that the day runs from dawn to dusk. Dawn for this calculation is when the sun is getAlos26Degrees 26° below the eastern geometric horizon before sunrise. Dusk for this is when the sun is getTzais26Degrees 26° below the western geometric horizon after sunset. This day is split into 12 equal parts with each part being a shaah zmanis. [...]

getShaahZmanis60Minutes(
) → double  Method to return a shaah zmanis (solar hour) according to the opinion of the Magen Avraham (MGA). This calculation divides the day based on the opinion of the MGA that the day runs from dawn to dusk. Dawn for this calculation is 60 minutes before sunrise and dusk is 60 minutes after sunset. This day is split into 12 equal parts with each part being a shaah zmanis. Alternate methods of calculating a shaah zmanis are available in the subclass ComplexZmanimCalendar [...]

getShaahZmanis72Minutes(
) → double  Method to return a shaah zmanis (solar hour) according to the opinion of the Magen Avraham (MGA). This calculation divides the day based on the opinion of the MGA that the day runs from dawn to dusk. Dawn for this calculation is 72 minutes before sunrise and dusk is 72 minutes after sunset. This day is split into 12 equal parts with each part being a shaah zmanis. Alternate methods of calculating a shaah zmanis are available in the subclass ComplexZmanimCalendar [...]

getShaahZmanis72MinutesZmanis(
) → double  Method to return a shaah zmanis (temporal hour) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos72Zmanis 72 minutes zmaniyos before getSunrise sunrise. This calculation divides the day based on the opinion of the MGA that the day runs from dawn to dusk. Dawn for this calculation is 72 minutes zmaniyos before sunrise and dusk is 72 minutes zmaniyos after sunset. This day is split into 12 equal parts with each part being a shaah zmanis. This is identical to 1/10th of the day from getSunrise sunrise to getSunset sunset. [...]

getShaahZmanis90Minutes(
) → double  Method to return a shaah zmanis (temporal hour) calculated using a dip of 90 minutes. This calculation divides the day based on the opinion of the Magen Avraham (MGA) that the day runs from dawn to dusk. Dawn for this calculation is 90 minutes before sunrise and dusk is 90 minutes after sunset. This day is split into 12 equal parts with each part being a shaah zmanis. [...]

getShaahZmanis90MinutesZmanis(
) → double  Method to return a shaah zmanis (temporal hour) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos90Zmanis 90 minutes zmaniyos before getSunrise sunrise. This calculation divides the day based on the opinion of the MGA that the day runs from dawn to dusk. Dawn for this calculation is 90 minutes zmaniyos before sunrise and dusk is 90 minutes zmaniyos after sunset. This day is split into 12 equal parts with each part being a shaah zmanis. This is identical to 1/8th of the day from getSunrise sunrise to getSunset sunset. [...]

getShaahZmanis96Minutes(
) → double  Method to return a shaah zmanis (temporal hour) calculated using a dip of 96 minutes. This calculation divides the day based on the opinion of the Magen Avraham (MGA) that the day runs from dawn to dusk. Dawn for this calculation is 96 minutes before sunrise and dusk is 96 minutes after sunset. This day is split into 12 equal parts with each part being a shaah zmanis. [...]

getShaahZmanis96MinutesZmanis(
) → double  Method to return a shaah zmanis (temporal hour) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos96Zmanis] 96 minutes zmaniyos before getSunrise sunrise. This calculation divides the day based on the opinion of the MGA that the day runs from dawn to dusk. Dawn for this calculation is 96 minutes zmaniyos before sunrise and dusk is 96 minutes zmaniyos after sunset. This day is split into 12 equal parts with each part being a shaah zmanis. This is identical to 1/7.5th of the day from getSunrise sunrise to getSunset sunset. [...]

getShaahZmanis120Minutes(
) → double  Method to return a shaah zmanis (temporal hour) calculated using a dip of 120 minutes. This calculation divides the day based on the opinion of the Magen Avraham (MGA) that the day runs from dawn to dusk. Dawn for this calculation is 120 minutes before sunrise and dusk is 120 minutes after sunset. This day is split into 12 equal parts with each part being a shaah zmanis. [...]

getShaahZmanis120MinutesZmanis(
) → double  Method to return a shaah zmanis (temporal hour) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos120Zmanis 120 minutes zmaniyos before getSunrise sunrise. This calculation divides the day based on the opinion of the MGA that the day runs from dawn to dusk. Dawn for this calculation is 120 minutes zmaniyos before sunrise and dusk is 120 minutes zmaniyos after sunset. This day is split into 12 equal parts with each part being a shaah zmanis. This is identical to 1/6th of the day from getSunrise sunrise to getSunset sunset. [...]

getShaahZmanisAteretTorah(
) → double  Method to return a shaah zmanis (temporal hour) according to the opinion of the Chacham Yosef HarariRaful of Yeshivat Ateret Torah calculated with alos being 1/10th of sunrise to sunset day, or getAlos72Zmanis 72 minutes zmaniyos of such a day before getSunrise sunrise, and tzais is usually calculated as getTzaisAteretTorah 40 minutes (configurable to any offset via setAteretTorahSunsetOffset) after getSunset] sunset. This day is split into 12 equal parts with each part being a shaah zmanis. Note that with this system, chatzos (midday) will not be the point that the sun is getSunTransit halfway across the sky. [...]

getShaahZmanisBaalHatanya(
) → double  A method that returns the Baal Hatanya's a shaah zmanis (getTemporalHour temporal hour). This forms the base for the Baal Hatanya's day based calculations that are calculated as a 1.583° dip below the horizon after sunset. [...]

getShaahZmanisGra(
) → double 
A method that returns a shaah zmanis (getTemporalHour temporal hour) according to
the opinion of the GRA. This calculation divides
the day based on the opinion of the GRA that the day runs from from getSeaLevelSunrise sea
level sunrise to getSeaLevelSunrise sea level sunset or getSunrise sunrise to
getSunset sunset (depending on the isUseElevation setting). The day is split into 12 equal
parts with each one being a shaah zmanis. This method is similar to getTemporalHour, but can
account for elevation. [...]
inherited

getShaahZmanisMGA(
) → double 
A method that returns a shaah zmanis (temporal hour) according to the opinion of the
Magen Avraham (MGA) based on a 72 minutes alos
and tzais. This calculation divides the day that runs from dawn to dusk (for sof zman krias shema and tfila).
Dawn for this calculation is 72 minutes before getSunrise sunrise or getSeaLevelSunrise sea level
sunrise (depending on the isUseElevation elevation setting) and dusk is 72 minutes after getSunset
sunset or getSeaLevelSunset sea level sunset (depending on the isUseElevation elevation setting).
This day is split into 12 equal parts with each part being a shaah zmanis. Alternate methods of calculating a
shaah zmanis according to the Magen Avraham (MGA) are available in the subclass ComplexZmanimCalendar. [...]
inherited

getSofZmanAchilasChametzBaalHatanya(
) → DateTime  This method returns the latest time one is allowed eating chametz on Erev Pesach according to the opinion of the Baal Hatanya. This time is identical to the getSofZmanTfilaBaalHatanya Sof zman tfilah Baal Hatanya. This time is 4 hours into the day based on the opinion of the Baal Hatanya that the day is calculated from sunrise to sunset. This returns the time 4 * getShaahZmanisBaalHatanya after getSunriseBaalHatanya netz amiti (sunrise). [...]

getSofZmanAchilasChametzGRA(
) → DateTime  This method returns the latest time one is allowed eating chametz on Erev Pesach according to the opinion of the GRA. This time is identical to the getSofZmanTfilaGRA Sof zman tfilah GRA and is provided as a convenience method for those who are unaware how this zman is calculated. This time is 4 hours into the day based on the opinion of the GRA that the day is calculated from sunrise to sunset. This returns the time 4 * getShaahZmanisGra after getSeaLevelSunrise sea level sunrise. [...]

getSofZmanAchilasChametzMGA16Point1Degrees(
) → DateTime  This method returns the latest time one is allowed eating chametz on Erev Pesach according to the opinion of the Magen Avraham (MGA) based on alos being getAlos16Point1Degrees 16.1° before getSunrise sunrise. This time is 4 getShaahZmanis16Point1Degrees shaos zmaniyos (solar hours) after getAlos16Point1Degrees dawn based on the opinion of the MGA that the day is calculated from dawn to nightfall with both being 16.1° below sunrise or sunset. This returns the time of 4 getShaahZmanis16Point1Degrees after getAlos16Point1Degrees dawn. [...]

getSofZmanAchilasChametzMGA72Minutes(
) → DateTime  This method returns the latest time one is allowed eating chametz on Erev Pesach according to the opinion of the Magen Avraham (MGA) based on alos being getAlos72 72 minutes before getSunrise sunrise. This time is identical to the getSofZmanTfilaMGA72Minutes Sof zman tfilah MGA 72 minutes. This time is 4 getShaahZmanisMGA shaos zmaniyos (temporal hours) after getAlos72 dawn based on the opinion of the MGA that the day is calculated from a getAlos72 dawn of 72 minutes before sunrise to getTzais72 nightfall of 72 minutes after sunset. This returns the time of 4 * getShaahZmanisMGA after getAlos72 dawn. [...]

getSofZmanBiurChametzBaalHatanya(
) → DateTime  This method returns the latest time for burning chametz on Erev Pesach according to the opinion of the Baal Hatanya. This time is 5 hours into the day based on the opinion of the Baal Hatanya that the day is calculated from sunrise to sunset. This returns the time 5 * getShaahZmanisBaalHatanya after getSunriseBaalHatanya netz amiti (sunrise). [...]

getSofZmanBiurChametzGRA(
) → DateTime  This method returns the latest time for burning chametz on Erev Pesach according to the opinion of the GRA This time is 5 hours into the day based on the opinion of the GRA that the day is calculated from sunrise to sunset. This returns the time 5 * getShaahZmanisGra after getSeaLevelSunrise sea level sunrise. [...]

getSofZmanBiurChametzMGA16Point1Degrees(
) → DateTime  This method returns the latest time for burning chametz on Erev Pesach according to the opinion of the Magen Avraham (MGA) based on alos being getAlos16Point1Degrees 16.1° before getSunrise sunrise. This time is 5 getShaahZmanis16Point1Degrees shaos zmaniyos (solar hours) after getAlos16Point1Degrees dawn based on the opinion of the MGA that the day is calculated from dawn to nightfall with both being 16.1° below sunrise or sunset. This returns the time of 5 getShaahZmanis16Point1Degrees after getAlos16Point1Degrees dawn. [...]

getSofZmanBiurChametzMGA72Minutes(
) → DateTime  This method returns the latest time for burning chametz on Erev Pesach according to the opinion of the Magen Avraham (MGA) based on alos being getAlos72 72 minutes before getSunrise sunrise. This time is 5 getShaahZmanisMGA shaos zmaniyos (temporal hours) after getAlos72 dawn based on the opinion of the MGA that the day is calculated from a getAlos72 dawn of 72 minutes before sunrise to getTzais72 nightfall of 72 minutes after sunset. This returns the time of 5 [...]

getSofZmanKidushLevana15Days(
[DateTime alos, DateTime tzais]) → DateTime  Returns the latest time of Kiddush Levana calculated as 15 days after the molad. This is the opinion brought down in the Shulchan Aruch (Orach Chaim 426). It should be noted that some opinions hold that the Rema who brings down the opinion of the <a Maharil's of calculating [getSofZmanKidushLevanaBetweenMoldos(Date, Date) half way between molad and mold is of the opinion that Mechaber agrees to his opinion. Also see the Aruch Hashulchan. For additional details on the subject, See Rabbi Dovid Heber's very detailed writeup in Siman Daled (chapter 4) of Shaarei Zmanim. If the time of sof zman Kiddush Levana occurs during the day (between the alos and tzais passed in as parameters), it returns the alos passed in. If a null alos or tzais are passed to this method, the nondaytime adjusted time will be returned. This method is available in the current release of the API but may change or be removed in the future since it depends on the still changing {link JewishCalendar and related classes. todo Add hyperlinks to documentation. [...]

getSofZmanKidushLevanaBetweenMoldos(
[DateTime alos, DateTime tzais]) → DateTime  Returns the latest time of Kidush Levana according to the <a Maharil's opinion that it is calculated as halfway between molad and molad. This adds half the 29 days, 12 hours and 793 chalakim time between molad and molad (14 days, 18 hours, 22 minutes and 666 milliseconds) to the month's molad. If the time of sof zman Kiddush Levana occurs during the day (between the alos and tzais passed in as parameters), it returns the alos passed in. If a null alos or tzais are passed to this method, the nondaytime adjusted time will be returned. This method is available in the current release of the API but may change or be removed in the future since it depends on the still changing {link JewishCalendar and related classes. [...]

getSofZmanShma(
DateTime startOfDay, DateTime endOfDay) → DateTime 
A generic method for calculating the latest zman krias shema (time to recite shema in the morning)
that is 3 * shaos zmaniyos (temporal hours) after the start of the day, calculated using the start and
end of the day passed to this method.
The time from the start of day to the end of day are divided into 12 shaos zmaniyos (temporal hours),
and the latest zman krias shema is calculated as 3 of those shaos zmaniyos after the beginning of
the day. As an example, passing {@link #getSunrise() sunrise} and {@link #getSunset sunset} or getSeaLevelSunrise
sea level sunrise and getSeaLevelSunset sea level sunset (depending on the isUseElevation
elevation setting) to this method will return sof zman krias shema according to the opinion of the
GRA. [...]
inherited

getSofZmanShma3HoursBeforeChatzos(
) → DateTime  This method returns the latest zman krias shema (time to recite Shema in the morning) calculated as 3 hours (regular and not zmaniyos) before ZmanimCalendar.getChatzos. This is the opinion of the Shach in the Nekudas Hakesef (Yora Deah 184), Shevus Yaakov, Chasan Sofer and others. This returns the time of 3 hours before ZmanimCalendar.getChatzos. todo Add hyperlinks to documentation [...]

getSofZmanShmaAlos16Point1ToSunset(
) → DateTime  This method returns the latest zman krias shema (time to recite Shema in the morning) based on the opinion that the day starts at getAlos16Point1Degrees alos 16.1° and ends at getSeaLevelSunset sea level sunset. 3 shaos zmaniyos are calculated based on this day and added to getAlos16Point1Degrees alosto reach this time. This time is 3 shaos zmaniyos (solar hours) after getAlos16Point1Degrees dawn based on the opinion that the day is calculated from a getAlos16Point1Degrees alos 16.1° to getSeaLevelSunset sea level sunset. Note: Based on this calculation chatzos will not be at midday. [...]

getSofZmanShmaAlos16Point1ToTzaisGeonim7Point083Degrees(
) → DateTime  This method returns the latest zman krias shema (time to recite Shema in the morning) based on the opinion that the day starts at getAlos16Point1Degrees alos 16.1° and ends at _ getTzaisGeonim7Point083Degrees tzais 7.083°_. 3 shaos zmaniyos are calculated based on this day and added to getAlos16Point1Degrees alos to reach this time. This time is 3 shaos zmaniyos (temporal hours) after getAlos16Point1Degrees alos 16.1° based on the opinion that the day is calculated from a getAlos16Point1Degrees alos 16.1° to getTzaisGeonim7Point083Degrees tzais 7.083°. Note: Based on this calculation chatzos will not be at midday. [...]

getSofZmanShmaAteretTorah(
) → DateTime  This method returns the latest zman krias shema (time to recite Shema in the morning) based on the calculation of Chacham Yosef HarariRaful of Yeshivat Ateret Torah, that the day starts getAlos72Zmanis 1/10th of the day before sunrise and is usually calculated as ending getTzaisAteretTorah 40 minutes after sunset (configurable to any offset via setAteretTorahSunsetOffset). shaos zmaniyos are calculated based on this day and added to getAlos72Zmanis alos to reach this time. This time is 3 _ getShaahZmanisAteretTorah shaos zmaniyos_ (temporal hours) after getAlos72Zmanis alos 72 zmaniyos_. Note: Based on this calculation chatzos will not be at midday. [...]

getSofZmanShmaBaalHatanya(
) → DateTime  This method returns the latest zman krias shema (time to recite Shema in the morning). This time is 3 getShaahZmanisBaalHatanya shaos zmaniyos (solar hours) after getSunriseBaalHatanya netz amiti (sunrise) based on the opinion of the Baal Hatanya that the day is calculated from sunrise to sunset. This returns the time 3 * getShaahZmanisBaalHatanya after getSunriseBaalHatanya netz amiti (sunrise). [...]

getSofZmanShmaFixedLocal(
) → DateTime  A method that returns the latest zman krias shema (time to recite Shema in the morning) calculated as 3 hours before getFixedLocalChatzos. [...]

getSofZmanShmaGRA(
) → DateTime 
This method returns the latest zman krias shema (time to recite shema in the morning) that is 3 *
getShaahZmanisGra shaos zmaniyos (solar hours) after getSunrise sunrise or
getSeaLevelSunrise sea level sunrise (depending on the isUseElevation setting), according
to the GRA.
The day is calculated from getSeaLevelSunrise sea level sunrise to getSeaLevelSunrise sea level
sunset or getSunrise sunrise to getSunset sunset (depending on the isUseElevation setting). [...]
inherited

getSofZmanShmaKolEliyahu(
) → DateTime  From the GRA in Kol Eliyahu on Berachos #173 that states that zman krias shema is calculated as half the time from getSeaLevelSunrise sea level sunrise to getFixedLocalChatzos fixed local chatzos. The GRA himself seems to contradict this when he stated that zman krias shema is 1/4 of the day from sunrise to sunset. See Sarah Lamoed #25 in Yisroel Vehazmanim Vol. III page 1016. [...]

getSofZmanShmaMGA(
) → DateTime 
This method returns the latest zman krias shema (time to recite shema in the morning) that is 3 *
getShaahZmanisMGA shaos zmaniyos (solar hours) after getAlos72, according to the
Magen Avraham (MGA). The day is calculated
from 72 minutes before getSeaLevelSunrise sea level sunrise} to 72 minutes after getSeaLevelSunrise
sea level sunset or from 72 minutes before getSunrise sunrise to getSunset sunset
(depending on the isUseElevation setting). [...]
inherited

getSofZmanShmaMGA16Point1Degrees(
) → DateTime  This method returns the latest zman krias shema (time to recite Shema in the morning) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos16Point1Degrees 16.1° before getSunrise sunrise. This time is 3 getShaahZmanis16Point1Degrees shaos zmaniyos (solar hours) after getAlos16Point1Degrees dawn based on the opinion of the MGA that the day is calculated from dawn to nightfall with both being 16.1° below sunrise or sunset. This returns the time of 3 * getShaahZmanis16Point1Degrees after getAlos16Point1Degrees dawn. [...]

getSofZmanShmaMGA18Degrees(
) → DateTime  This method returns the latest zman krias shema (time to recite Shema in the morning) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos18Degrees 18° before getSunrise sunrise. This time is 3 getShaahZmanis18Degrees shaos zmaniyos (solar hours) after getAlos18Degrees dawn based on the opinion of the MGA that the day is calculated from dawn to nightfall with both being 18° below sunrise or sunset. This returns the time of 3 * getShaahZmanis18Degrees after getAlos18Degrees dawn. [...]

getSofZmanShmaMGA19Point8Degrees(
) → DateTime  This method returns the latest zman krias shema (time to recite Shema in the morning) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos19Point8Degrees 19.8° before getSunrise sunrise. This time is 3 getShaahZmanis19Point8Degrees shaos zmaniyos (solar hours) after getAlos19Point8Degrees dawn based on the opinion of the MGA that the day is calculated from dawn to nightfall with both being 19.8° below sunrise or sunset. This returns the time of 3 * getShaahZmanis19Point8Degrees after getAlos19Point8Degrees dawn. [...]

getSofZmanShmaMGA72Minutes(
) → DateTime  This method returns the latest zman krias shema (time to recite Shema in the morning) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos72 72 minutes before getSunrise sunrise. This time is 3 getShaahZmanis72Minutes shaos zmaniyos (solar hours) after getAlos72 dawn based on the opinion of the MGA that the day is calculated from a getAlos72 dawn of 72 minutes before sunrise to getTzais72 nightfall of 72 minutes after sunset. This returns the time of 3 * getShaahZmanis72Minutes after getAlos72 dawn. This class returns an identical time to getSofZmanShmaMGA and is repeated here for clarity. [...]

getSofZmanShmaMGA72MinutesZmanis(
) → DateTime  This method returns the latest zman krias shema (time to recite Shema in the morning) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos72Zmanis 72 minutes zmaniyos, or 1/10th of the day before getSunrise sunrise. This time is 3 getShaahZmanis90MinutesZmanis shaos zmaniyos (solar hours) after getAlos72Zmanis dawn based on the opinion of the MGA that the day is calculated from a getAlos72Zmanis dawn of 72 minutes zmaniyos, or 1/10th of the day before getSeaLevelSunrise sea level sunrise to getTzais72Zmanis nightfall of 72 minutes zmaniyos after getSeaLevelSunset sea level sunset. This returns the time of 3 * getShaahZmanis72MinutesZmanis after getAlos72Zmanis dawn. [...]

getSofZmanShmaMGA90Minutes(
) → DateTime  This method returns the latest zman krias shema (time to recite Shema in the morning) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos90 90 minutes before getSunrise sunrise. This time is 3 getShaahZmanis90Minutes shaos zmaniyos (solar hours) after getAlos90 dawn based on the opinion of the MGA that the day is calculated from a getAlos90 dawn of 90 minutes before sunrise to getTzais90 nightfall of 90 minutes after sunset. This returns the time of 3 * getShaahZmanis90Minutes after getAlos90 dawn. [...]

getSofZmanShmaMGA90MinutesZmanis(
) → DateTime  This method returns the latest zman krias shema (time to recite Shema in the morning) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos90Zmanis 90 minutes zmaniyos before getSunrise sunrise. This time is 3 getShaahZmanis90MinutesZmanis shaos zmaniyos (solar hours) after getAlos90Zmanis dawn based on the opinion of the MGA that the day is calculated from a getAlos90Zmanis dawn of 90 minutes zmaniyos before sunrise to getTzais90Zmanis nightfall of 90 minutes zmaniyos after sunset. This returns the time of 3 * getShaahZmanis90MinutesZmanis after getAlos90Zmanis dawn. [...]

getSofZmanShmaMGA96Minutes(
) → DateTime  This method returns the latest zman krias shema (time to recite Shema in the morning) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos96 96 minutes before getSunrise sunrise. This time is 3 getShaahZmanis96Minutes shaos zmaniyos (solar hours) after getAlos96 dawn based on the opinion of the MGA that the day is calculated from a getAlos96 dawn of 96 minutes before sunrise to getTzais96 nightfall of 96 minutes after sunset. This returns the time of 3 * getShaahZmanis96Minutes after getAlos96 dawn. [...]

getSofZmanShmaMGA96MinutesZmanis(
) → DateTime  This method returns the latest zman krias shema (time to recite Shema in the morning) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos90Zmanis 96 minutes zmaniyos before getSunrise sunrise. This time is 3 getShaahZmanis96MinutesZmanis shaos zmaniyos (solar hours) after getAlos96Zmanis dawn based on the opinion of the MGA that the day is calculated from a getAlos96Zmanis dawn of 96 minutes zmaniyos before sunrise to getTzais90Zmanis nightfall of 96 minutes zmaniyos after sunset. This returns the time of 3 * getShaahZmanis96MinutesZmanis after getAlos96Zmanis dawn. [...]

getSofZmanShmaMGA120Minutes(
) → DateTime  This method returns the latest zman krias shema (time to recite Shema in the morning) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos120 120 minutes or 1/6th of the day before getSunrise sunrise. This time is 3 getShaahZmanis120Minutes shaos zmaniyos (solar hours) after getAlos120 dawn based on the opinion of the MGA that the day is calculated from a getAlos120 dawn of 120 minutes before sunrise to getTzais120 nightfall of 120 minutes after sunset. This returns the time of 3 * getShaahZmanis120Minutes after getAlos120 dawn. [...]

getSofZmanTfila(
DateTime startOfDay, DateTime endOfDay) → DateTime 
A generic method for calculating the latest zman tfilah (time to recite the morning prayers)
that is 4 * shaos zmaniyos (temporal hours) after the start of the day, calculated using the start and
end of the day passed to this method.
The time from the start of day to the end of day are divided into 12 shaos zmaniyos (temporal hours),
and sof zman tfila is calculated as 4 of those shaos zmaniyos after the beginning of the day.
As an example, passing getSunrise sunrise and
getSunset sunset
or getSeaLevelSunrise sea level sunrise and getSeaLevelSunset sea level sunset (depending on the isUseElevation elevation setting) to this method will return zman tfilah according to the opinion of the GRA. [...]inherited 
getSofZmanTfila2HoursBeforeChatzos(
) → DateTime  This method returns the latest zman tfila (time to recite the morning prayers) calculated as 2 hours before ZmanimCalendar.getChatzos. This is based on the opinions that calculate sof zman krias shema as getSofZmanShma3HoursBeforeChatzos. This returns the time of 2 hours before ZmanimCalendar.getChatzos. [...]

getSofZmanTfilaBaalHatanya(
) → DateTime  This method returns the latest zman tfilah (time to recite the morning prayers). This time is 4 hours into the day based on the opinion of the Baal Hatanya that the day is calculated from sunrise to sunset. This returns the time 4 * getShaahZmanisBaalHatanya after getSunriseBaalHatanya netz amiti (sunrise). [...]

getSofZmanTfilaFixedLocal(
) → DateTime  This method returns the latest zman tfila (time to recite the morning prayers) calculated as 2 hours before getFixedLocalChatzos. [...]

getSofZmanTfilaGRA(
) → DateTime 
This method returns the latest zman tfila (time to recite shema in the morning) that is 4 *
getShaahZmanisGra shaos zmaniyos (solar hours) after getSunrise sunrise or
getSeaLevelSunrise sea level sunrise (depending on the isUseElevation setting), according
to the GRA.
The day is calculated from getSeaLevelSunrise sea level sunrise to getSeaLevelSunrise sea level
sunset or getSunrise sunrise to getSunset sunset (depending on the isUseElevation setting). [...]
inherited

getSofZmanTfilahAteretTorah(
) → DateTime  This method returns the latest zman tfila (time to recite the morning prayers) based on the calculation of Chacham Yosef HarariRaful of Yeshivat Ateret Torah, that the day starts getAlos72Zmanis 1/10th of the day before sunrise and is usually calculated as ending getTzaisAteretTorah 40 minutes after sunset (configurable to any offset via [setAteretTorahSunsetOffset(double)). shaos zmaniyos are calculated based on this day and added to getAlos72Zmanis alos to reach this time. This time is 4 * getShaahZmanisAteretTorah shaos zmaniyos (temporal hours) after getAlos72Zmanis alos 72 zmaniyos. Note: Based on this calculation chatzos will not be at midday. [...]

getSofZmanTfilaMGA(
) → DateTime 
This method returns the latest zman tfila (time to recite shema in the morning) that is 4 *
getShaahZmanisMGA] shaos zmaniyos (solar hours) after getAlos72 according to the
Magen Avraham (MGA). The day is calculated
from 72 minutes before getSeaLevelSunrise sea level sunrise to 72 minutes after
getSeaLevelSunrise sea level sunset or from 72 minutes before getSunrise sunrise to getSunset
sunset (depending on the isUseElevation setting). [...]
inherited

getSofZmanTfilaMGA16Point1Degrees(
) → DateTime  This method returns the latest zman tfila (time to recite the morning prayers) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos16Point1Degrees 16.1° before getSunrise sunrise. This time is 4 getShaahZmanis16Point1Degrees shaos zmaniyos (solar hours) after getAlos16Point1Degrees dawn based on the opinion of the MGA that the day is calculated from dawn to nightfall with both being 16.1° below sunrise or sunset. This returns the time of 4 * getShaahZmanis16Point1Degrees after getAlos16Point1Degrees dawn. [...]

getSofZmanTfilaMGA18Degrees(
) → DateTime  This method returns the latest zman tfila (time to recite the morning prayers) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos18Degrees 18° before getSunrise sunrise. This time is 4 getShaahZmanis18Degrees shaos zmaniyos (solar hours) after getAlos18Degrees dawn based on the opinion of the MGA that the day is calculated from dawn to nightfall with both being 18° below sunrise or sunset. This returns the time of 4 * getShaahZmanis18Degrees after getAlos18Degrees dawn. [...]

getSofZmanTfilaMGA19Point8Degrees(
) → DateTime  This method returns the latest zman tfila (time to recite the morning prayers) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos19Point8Degrees 19.8° before getSunrise sunrise. This time is 4 getShaahZmanis19Point8Degrees shaos zmaniyos (solar hours) after getAlos19Point8Degrees dawn based on the opinion of the MGA that the day is calculated from dawn to nightfall with both being 19.8° below sunrise or sunset. This returns the time of 4 * getShaahZmanis19Point8Degrees after getAlos19Point8Degrees dawn. [...]

getSofZmanTfilaMGA72Minutes(
) → DateTime  This method returns the latest zman tfila (time to recite the morning prayers) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos72 72 minutes before getSunrise sunrise. This time is 4 getShaahZmanis72Minutes shaos zmaniyos (solar hours) after getAlos72 dawn based on the opinion of the MGA that the day is calculated from a getAlos72 dawn of 72 minutes before sunrise to getTzais72 nightfall of 72 minutes after sunset. This returns the time of 4 * getShaahZmanis72Minutes after getAlos72 dawn. This class returns an identical time to getSofZmanTfilaMGA and is repeated here for clarity. [...]

getSofZmanTfilaMGA72MinutesZmanis(
) → DateTime  This method returns the latest zman tfila (time to the morning prayers) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos72Zmanis 72 minutes zmaniyos before getSunrise sunrise. This time is 4 getShaahZmanis72MinutesZmanis shaos zmaniyos (solar hours) after getAlos72Zmanis dawn based on the opinion of the MGA that the day is calculated from a getAlos72Zmanis dawn of 72 minutes zmaniyos before sunrise to getTzais72Zmanis nightfall of 72 minutes zmaniyos after sunset. This returns the time of 4 * getShaahZmanis72MinutesZmanis after getAlos72Zmanis dawn. [...]

getSofZmanTfilaMGA90Minutes(
) → DateTime  This method returns the latest zman tfila (time to recite the morning prayers) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos90 90 minutes before getSunrise sunrise. This time is 4 getShaahZmanis90Minutes shaos zmaniyos (solar hours) after getAlos90 dawn based on the opinion of the MGA that the day is calculated from a getAlos90 dawn of 90 minutes before sunrise to getTzais90 nightfall of 90 minutes after sunset. This returns the time of 4 * getShaahZmanis90Minutes after getAlos90 dawn. [...]

getSofZmanTfilaMGA90MinutesZmanis(
) → DateTime  This method returns the latest zman tfila (time to the morning prayers) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos90Zmanis 90 minutes zmaniyos before getSunrise sunrise. This time is 4 getShaahZmanis90MinutesZmanis shaos zmaniyos (solar hours) after getAlos90Zmanis dawn based on the opinion of the MGA that the day is calculated from a getAlos90Zmanis dawn of 90 minutes zmaniyos before sunrise to getTzais90Zmanis nightfall of 90 minutes zmaniyos after sunset. This returns the time of 4 * getShaahZmanis90MinutesZmanis after getAlos90Zmanis dawn. [...]

getSofZmanTfilaMGA96Minutes(
) → DateTime  This method returns the latest zman tfila (time to recite the morning prayers) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos96 96 minutes before getSunrise sunrise. This time is 4 getShaahZmanis96Minutes shaos zmaniyos (solar hours) after getAlos96 dawn based on the opinion of the MGA that the day is calculated from a getAlos96 dawn of 96 minutes before sunrise to getTzais96 nightfall of 96 minutes after sunset. This returns the time of 4 * getShaahZmanis96Minutes after getAlos96 dawn. [...]

getSofZmanTfilaMGA96MinutesZmanis(
) → DateTime  This method returns the latest zman tfila (time to the morning prayers) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos96Zmanis 96 minutes zmaniyos before getSunrise sunrise. This time is 4 getShaahZmanis96MinutesZmanis shaos zmaniyos (solar hours) after getAlos96Zmanis dawn based on the opinion of the MGA that the day is calculated from a getAlos96Zmanis dawn of 96 minutes zmaniyos before sunrise to getTzais96Zmanis nightfall of 96 minutes zmaniyos after sunset. This returns the time of 4 * getShaahZmanis96MinutesZmanis after getAlos96Zmanis dawn. [...]

getSofZmanTfilaMGA120Minutes(
) → DateTime  This method returns the latest zman tfila (time to recite the morning prayers) according to the opinion of the Magen Avraham (MGA) based on alos being getAlos120 120 minutes before getSunrise sunrise . This time is 4 getShaahZmanis120Minutes shaos zmaniyos (solar hours) after getAlos120 dawn based on the opinion of the MGA that the day is calculated from a getAlos120 dawn of 120 minutes before sunrise to getTzais120 nightfall of 120 minutes after sunset. This returns the time of 4 * getShaahZmanis120Minutes after getAlos120 dawn. [...]

getSolarMidnight(
) → DateTime  A method that returns "solar" midnight, or the time when the sun is at its nadir. Note: this method is experimental and might be removed. [...]

getSunrise(
) → DateTime 
The getSunrise method Returns a
Date
representing the {@link AstronomicalCalculator#getElevationAdjustment(double) elevation adjusted} sunrise time. The zenith used for the calculation uses {@link #GEOMETRIC_ZENITH geometric zenith} of 90° plus {@link AstronomicalCalculator#getElevationAdjustment(double)}. This is adjusted by the {@link AstronomicalCalculator} to add approximately 50/60 of a degree to account for 34 archminutes of refraction and 16 archminutes for the sun's radius for a total of {@link AstronomicalCalculator#adjustZenith 90.83333°}. See documentation for the specific implementation of the {@link AstronomicalCalculator} that you are using. [...]inherited 
getSunriseBaalHatanya(
) → DateTime  A method that returns the Baal Hatanya's netz amiti (sunrise) without AstronomicalCalculator.getElevationAdjustment elevation adjustment. This forms the base for the Baal Hatanya's dawn based calculations that are calculated as a dip below the horizon before sunrise. [...]

getSunriseOffsetByDegrees(
double offsetZenith) → DateTime 
A utility method that returns the time of an offset by degrees below or above the horizon of
{@link #getSunrise() sunrise}. Note that the degree offset is from the vertical, so for a calculation of 14°
before sunrise, an offset of 14 + {@link #GEOMETRIC_ZENITH} = 104 would have to be passed as a parameter. [...]
inherited

getSunriseSolarDipFromOffset(
double minutes) → double 
Returns the dip below the horizon before sunrise that matches the offset minutes on passed in as a parameter. For
example passing in 72 minutes for a calendar set to the equinox in Jerusalem returns a value close to 16.1°
Please note that this method is very slow and inefficient and should NEVER be used in a loop. TODO: Improve
efficiency. [...]
inherited

getSunset(
) → DateTime 
The getSunset method Returns a
Date
representing the {@link AstronomicalCalculator#getElevationAdjustment(double) elevation adjusted} sunset time. The zenith used for the calculation uses {@link #GEOMETRIC_ZENITH geometric zenith} of 90° plus {@link AstronomicalCalculator#getElevationAdjustment(double)}. This is adjusted by the {@link AstronomicalCalculator} to add approximately 50/60 of a degree to account for 34 archminutes of refraction and 16 archminutes for the sun's radius for a total of {@link AstronomicalCalculator#adjustZenith 90.83333°}. See documentation for the specific implementation of the {@link AstronomicalCalculator} that you are using. Note: In certain cases the calculates sunset will occur before sunrise. This will typically happen when a timezone other than the local timezone is used (calculating Los Angeles sunset using a GMT timezone for example). In this case the sunset date will be incremented to the following date. [...]inherited 
getSunsetBaalHatanya(
) → DateTime  A method that returns the Baal Hatanya's shkiah amiti (sunset) without {link AstronomicalCalculator#getElevationAdjustment(double) elevation adjustment. This forms the base for the Baal Hatanya's dusk based calculations that are calculated as a dip below the horizon after sunset. [...]

getSunsetOffsetByDegrees(
double offsetZenith) → DateTime 
A utility method that returns the time of an offset by degrees below or above the horizon of {@link #getSunset()
sunset}. Note that the degree offset is from the vertical, so for a calculation of 14° after sunset, an
offset of 14 + {@link #GEOMETRIC_ZENITH} = 104 would have to be passed as a parameter. [...]
inherited

getSunsetSolarDipFromOffset(
double minutes) → double 
Returns the dip below the horizon after sunset that matches the offset minutes on passed in as a parameter. For
example passing in 72 minutes for a calendar set to the equinox in Jerusalem returns a value close to 16.1°
Please note that this method is very slow and inefficient and should NEVER be used in a loop. TODO: Improve
efficiency. [...]
inherited

getSunTransit(
[DateTime startOfDay, DateTime endOfDay]) → DateTime 
A method that returns sundial or solarnoon. It occurs when the Sun is transiting the celestial meridian. In this class it is
calculated as halfway between the sunrise and sunset passed to this method. This time can be slightly off the
real transit time due to changes in declination (the lengthening or shortening day). [...]
inherited

getTchilasZmanKidushLevana3Days(
[DateTime alos, DateTime tzais]) → DateTime  Returns the earliest time of Kiddush Levana according to Rabbeinu Yonah's opinion that it can be said 3 days after the molad. If the time of tchilas zman Kiddush Levana occurs during the day (between alos and tzais passed to this method) it will return the following tzais. If null is passed for either alos or tzais, the actual tchilas zman Kiddush Levana will be returned, regardless of if it is during the day or not. This method is available in the current release of the API but may change or be removed in the future since it depends on the still changing {link JewishCalendar and related classes. [...]

getTchilasZmanKidushLevana7Days(
[DateTime alos, DateTime tzais]) → DateTime  Returns the earliest time of Kiddush Levana according to the opinions that it should not be said until 7 days after the molad. If the time of tchilas zman Kiddush Levana occurs during the day (between ZmanimCalendar.getAlos72 Alos and ZmanimCalendar.getTzais72 tzais) it return the next tzais. This method is available in the current release of the API but may change or be removed in the future since it depends on the still changing {link JewishCalendar and related classes. [...]

getTemporalHour(
[DateTime startOfDay, DateTime endOfDay]) → double 
A utility method that will allow the calculation of a temporal (solar) hour based on the sunrise and sunset
passed as parameters to this method. An example of the use of this method would be the calculation of a
nonelevation adjusted temporal hour by passing in {@link #getSeaLevelSunrise() sea level sunrise} and
{@link #getSeaLevelSunset() sea level sunset} as parameters. [...]
inherited

getTzais(
) → DateTime 
A method that returns tzais (nightfall) when the sun is ZENITH_8_POINT_5 8.5° below the
GEOMETRIC_ZENITH geometric horizon (90°) after
getSunset sunset
, a time that Rabbi Meir Posen in his the Ohr Meir calculated that 3 small stars are visible, which is later than the required 3 medium stars. See the ZENITH_8_POINT_5 constant. [...]inherited 
getTzais16Point1Degrees(
) → DateTime  For information on how this is calculated see the comments on getAlos16Point1Degrees [...]

getTzais18Degrees(
) → DateTime  For information on how this is calculated see the comments on getAlos18Degrees [...]

getTzais19Point8Degrees(
) → DateTime  For information on how this is calculated see the comments on getAlos19Point8Degrees [...]

getTzais26Degrees(
) → DateTime  For information on how this is calculated see the comments on getAlos26Degrees [...]

getTzais60(
) → DateTime  This method returns the tzais (nightfall) based on the opinion of the _ Chavas Yair_ and Divrei Malkiel that the time to walk the distance of a Mil is 15 minutes for a total of 60 minutes for 4 Mil after getSeaLevelSunset sea level sunset. [...]

getTzais72(
) → DateTime 
This method returns the tzais (nightfall) based on the opinion of the Rambam
and Rabbeinu Tam that tzais is calculated as 72 minutes, the time it takes to walk 4 Mil at 18 minutes a Mil. Based on
the on the isUseElevation setting) a 72 minute offset from either getSunset sunset or
getSeaLevelSunset sea level sunset is used. [...]
inherited

getTzais72Zmanis(
) → DateTime  Method to return tzais (dusk) calculated as 72 minutes zmaniyos, or 1/10th of the day after getSeaLevelSunset sea level sunset. [...]

getTzais90(
) → DateTime  Method to return tzais (dusk) calculated as 90 minutes after sea level sunset. This method returns tzais (nightfall) based on the opinion of the Magen Avraham that the time to walk the distance of a Mil according to the Rambam's opinion is 18 minutes for a total of 90 minutes based on the opinion of Ula who calculated tzais as 5 Mil after sea level shkiah (sunset). A similar calculation getTzais19Point8Degreesuses solar position calculations based on this time. [...]

getTzais90Zmanis(
) → DateTime  Method to return tzais (dusk) calculated using 90 minutes zmaniyos after getSeaLevelSunset sea level sunset. [...]

getTzais96(
) → DateTime  A method to return tzais (dusk) calculated as 96 minutes after sea level sunset. For information on how this is calculated see the comments on getAlos96. [...]

getTzais96Zmanis(
) → DateTime  Method to return tzais (dusk) calculated using 96 minutes zmaniyos after getSeaLevelSunset sea level sunset. [...]

getTzais120(
) → DateTime  This method returns tzais (nightfall) based on the opinion of the Magen Avraham that the time to walk the distance of a Mil according to the Rambam's opinion is 2/5 of an hour (24 minutes) for a total of 120 minutes based on the opinion of Ula who calculated tzais as 5 Mil after sea level shkiah (sunset). A similar calculation getTzais26Degrees uses temporal calculations based on this time. [...]

getTzais120Zmanis(
) → DateTime  Method to return tzais (dusk) calculated using 120 minutes zmaniyos after getSeaLevelSunset sea level sunset. [...]

getTzaisAteretTorah(
) → DateTime  This method returns tzais usually calculated as 40 minutes (configurable to any offset via setAteretTorahSunsetOffset) after sunset. Please note that Chacham Yosef HarariRaful of Yeshivat Ateret Torah who uses this time, does so only for calculating various other zmanai hayom such as Sof Zman Krias Shema and Plag Hamincha. His calendars do not publish a zman for Tzais. It should also be noted that Chacham HarariRaful provided a 25 minute zman for Israel. This API uses 40 minutes year round in any place on the globe by default. This offset can be changed by calling setAteretTorahSunsetOffset. [...]

getTzaisBaalHatanya(
) → DateTime  A method that returns tzais (nightfall) when the sun is 6° below the western geometric horizon (90°) after [getSunset sunset. For information on the source of this calculation see ZENITH_6_DEGREES. [...]

getTzaisGeonim3Point7Degrees(
) → DateTime  This method returns the tzais (nightfall) based on the opinion of the Geonim calculated at the sun's position at ZENITH_3_POINT_7 3.7° below the western horizon. [...]

getTzaisGeonim3Point8Degrees(
) → DateTime  This method returns the tzais (nightfall) based on the opinion of the Geonim calculated at the sun's position at ZENITH_3_POINT_8 3.8° below the western horizon. [...]

getTzaisGeonim3Point65Degrees(
) → DateTime  This method returns the tzais (nightfall) based on the opinion of the Geonim calculated as 3/4 of a Mil based on an 18 minute Mil, or 13.5 minutes. It is the sun's position at ZENITH_3_POINT_65 3.65° below the western horizon. This is a very early zman and should not be relied on without Rabbinical guidance. [...]

getTzaisGeonim3Point676Degrees(
) → DateTime  This method returns the tzais (nightfall) based on the opinion of the Geonim calculated as 3/4 of a Mil based on an 18 minute Mil, or 13.5 minutes. It is the sun's position at [ZENITH_3_POINT_676 3.676° below the western horizon based on the calculations of Stanley Fishkind. This is a very early zman and should not be relied on without Rabbinical guidance. [...]

getTzaisGeonim4Point8Degrees(
) → DateTime  This method returns the tzais (nightfall) based on the opinion of the Geonim calculated as 3/4 of a Mil based on the sun's position at ZENITH_4_POINT_8 4.8° below the western horizon. This is based on Rabbi Leo Levi's calculations. This is the This is a very early zman and should not be relied on without Rabbinical guidance. todo Additional documentation needed. [...]

getTzaisGeonim4Point37Degrees(
) → DateTime  This method returns the tzais (nightfall) based on the opinion of the Geonim calculated as 3/4 of a Mil, based on a 22.5 minute Mil, or 16 7/8 minutes. It is the sun's position at ZENITH_4_POINT_37 4.37° below the western horizon. This is a very early zman and should not be relied on without Rabbinical guidance. [...]

getTzaisGeonim4Point61Degrees(
) → DateTime  This method returns the tzais (nightfall) based on the opinion of the Geonim calculated as 3/4 of a Mil based on a 24 minute Mil, or 18 minutes. It is the sun's position at ZENITH_4_POINT_61 4.61° below the western horizon. This is a very early zman and should not be relied on without Rabbinical guidance. [...]

getTzaisGeonim5Point88Degrees(
) → DateTime  This method returns the tzais (nightfall) based on the opinion of the Geonim calculated as 3/4 of a 24 minute Mil, based on a Mil being 24 minutes, and is calculated as 18 + 2 + 4 for a total of 24 minutes. It is the sun's position at ZENITH_5_POINT_88 5.88° below the western horizon. This is a very early zman and should not be relied on without Rabbinical guidance. [...]

getTzaisGeonim5Point95Degrees(
) → DateTime  This method returns the tzais (nightfall) based on the opinion of the Geonim calculated at the sun's position at ZENITH_5_POINT_95 5.95° below the western horizon. [...]

getTzaisGeonim6Point45Degrees(
) → DateTime  This method returns the tzais (nightfall) based on the opinion of the Geonim as calculated by Rabbi Yechiel Michel Tucazinsky. It is based on of the position of the sun no later than getTzaisGeonim6Point45Degrees 31 minutes after sunset in Jerusalem, and at the height of the summer solstice, this zman is 28 minutes after shkiah. This computes to 6.45° below the western horizon. todo Additional documentation details needed. [...]

getTzaisGeonim7Point67Degrees(
) → DateTime 
This method returns tzais (nightfall) based on the opinion of the Geonim calculated as 45 minutes
after sunset during the summer solstice in New York, when the neshef (twilight) is the longest. The sun's
position at this time computes to ZENITH_7_POINT_67 7.75° below the western horizon. See
Igros Moshe Even Haezer 4, Ch. 4 (regarding
tzais for krias Shema). It is also mentioned in Rabbi Heber's Shaarei Zmanim
on in chapter 10 (page 87) and
chapter 12 (page 108). Also see the
time of 45 minutes in Rabbi Simcha Bunim Cohen's
The radiance of Shabbos as the earliest zman for New York. This
zman is also listed in the Divrei Shalom Vol. III, chapter 75,
and Bais Av"i Vol. III, chapter 117.
This zman is also listed in the Divrei Shalom etc. chapter 177. Since this
zman depends on the level of light, Rabbi Yaakov Shakow presented this degree based calculation to Rabbi
Rabbi Shmuel Kamenetsky(https://en.wikipedia.org/wiki/Shmuel_Kamenetsky) who agreed to it.
todo add hyperlinks to source of Divrei Shalom.
return the
DateTime
representing the time when the sun is 7.67° below sea level. If the calculation can't be computed such as northern and southern locations even south of the Arctic Circle and north of the Antarctic Circle where the sun may not reach low enough below the horizon for this calculation, a null will be returned. See detailed explanation on top of the AstronomicalCalendar documentation. see ZENITH_7_POINT_67 
getTzaisGeonim7Point083Degrees(
) → DateTime  This method returns the tzais (nightfall) based on the opinion of the Geonim calculated as 30 minutes after sunset during the equinox (on March 16, about 4 days before the astronomical equinox, the day that a solar hour is 60 minutes) in Yerushalayim. The sun's position at this time computes to ZENITH_7_POINT_083 7.083° (or 7° 5\u2032 below the western horizon. Note that this is a common and rounded number. Computation shows the accurate number is 7.2° [...]

getTzaisGeonim8Point5Degrees(
) → DateTime  This method returns the tzais (nightfall) based on the opinion of the Geonim calculated at the sun's position at ZENITH_8_POINT_5 8.5° below the western horizon. [...]

getTzaisGeonim9Point3Degrees(
) → DateTime  This method returns the tzais (nightfall) based on the calculations used in the Luach Itim Lebinah as the stringent time for tzais. It is calculated at the sun's position at ZENITH_9_POINT_3 9.3° below the western horizon. [...]

getTzaisGeonim9Point75Degrees(
) → DateTime  This method returns the tzais (nightfall) based on the opinion of the Geonim calculated as 60 minutes after sunset during the equinox (on March 16, about 4 days before the astronomical equinox, the day that a solar hour is 60 minutes) in New York. The sun's position at this time computes to ZENITH_9_POINT_75 9.75° below the western horizon. This is the opinion of Rabbi Eliyahu Henkin. This also follows the opinion of Rabbi Shmuel Kamenetsky. Rabbi Yaakov Shakow presented these degree based times to Rabbi Shmuel Kamenetsky who agreed to them. [...]

getUTCSeaLevelSunrise(
double zenith) → double 
A method that returns the sunrise in UTC time without correction for time zone offset from GMT and without using
daylight savings time. Nonsunrise and sunset calculations such as dawn and dusk, depend on the amount of visible
light, something that is not affected by elevation. This method returns UTC sunrise calculated at sea level. This
forms the base for dawn calculations that are calculated as a dip below the horizon before sunrise. [...]
inherited

getUTCSeaLevelSunset(
double zenith) → double 
A method that returns the sunset in UTC time without correction for elevation, time zone offset from GMT and
without using daylight savings time. Nonsunrise and sunset calculations such as dawn and dusk, depend on the
amount of visible light, something that is not affected by elevation. This method returns UTC sunset calculated
at sea level. This forms the base for dusk calculations that are calculated as a dip below the horizon after
sunset. [...]
inherited

getUTCSunrise(
double zenith) → double 
A method that returns the sunrise in UTC time without correction for time zone offset from GMT and without using
daylight savings time. [...]
inherited

getUTCSunset(
double zenith) → double 
A method that returns the sunset in UTC time without correction for time zone offset from GMT and without using
daylight savings time. [...]
inherited

getZmanMolad(
) → DateTime 
Returns the point in time of Molad as a
DateTime
Object. For the traditional day of week, hour, minute and chalakim,JewishCalendar.getMoladAsDate
and the not yet completed HebrewDateFormatter that will have formatting for this. [...] 
isAssurBemlacha(
DateTime currentTime, DateTime tzais, bool inIsrael) → bool 
This is a utility method to determine if the current Date (datetime) passed in has a melacha (work) prohibition.
Since there are many opinions on the time of tzais, the tzais for the current day has to be passed to this
class. Sunset is the classes current day's getElevationAdjustedSunset elevation adjusted sunset that observes the
isUseElevation settings. The
JewishCalendar#getInIsrael
will be set by the inIsrael parameter. [...]inherited 
isUseElevation(
) → bool 
Is elevation above sea level calculated for times besides sunrise and sunset. According to Rabbi Dovid Yehuda
Bursztyn in his Zmanim Kehilchasam (second edition published in 2007)
chapter 2 (pages 186187) no zmanim besides sunrise and sunset should use elevation. However Rabbi
Yechiel Avrahom Zilber in the Birur Halacha Vol. 6 Ch. 58 Pages
34 and
42 is of the opinion that elevation should be
accounted for in zmanim calculations. Related to this, Rabbi Yaakov Karp in <a href=
Shimush Zekeinim, Ch. 1, page 17 states that obstructing horizons
should be factored into zmanim calculations.The setting defaults to false (elevation will not be used for zmanim
calculations), unless the setting is changed to true in setUseElevation. This will impact sunrise
and sunset based zmanim such as getSunrise(), getSunset, getSofZmanShmaGRA, alos based
zmanim such as _getSofZmanShmaMGA that are based on a fixed offset of sunrise or sunset and zmanim based on
a percentage of the day such as ComplexZmanimCalendar.getSofZmanShmaMGA90MinutesZmanis that are based on
sunrise and sunset. It will not impact zmanim that are a degree based offset of sunrise and sunset, such as
ComplexZmanimCalendar.getSofZmanShmaMGA16Point1Degrees or ComplexZmanimCalendar.getSofZmanShmaBaalHatanya. [...]
inherited

noSuchMethod(
Invocation invocation) → dynamic 
Invoked when a nonexistent method or property is accessed. [...]
inherited

setAstronomicalCalculator(
AstronomicalCalculator astronomicalCalculator) → void 
A method to set the {@link AstronomicalCalculator} used for astronomical calculations. The Zmanim package ships
with a number of different implementations of the
abstract
{@link AstronomicalCalculator} based on different algorithms, including {@link net.sourceforge.zmanim.util.SunTimesCalculator one implementation} based on the US Naval Observatory's algorithm, and {@link net.sourceforge.zmanim.util.NOAACalculator another} based on NOAA's algorithm. This allows easy runtime switching and comparison of different algorithms. [...]inherited 
setAteretTorahSunsetOffset(
double ateretTorahSunsetOffset) → void  Allows setting the offset in minutes after sunset for the Ateret Torah zmanim. The default if unset is 40 minutes. Chacham Yosef HarariRaful of Yeshivat Ateret Torah uses 40 minutes globally with the exception of Israel where a 25 minute offset is used. This 40 minute (or any other) offset can be overridden by this method. This offset impacts all Ateret Torah zmanim. [...]

setCalendar(
DateTime calendar) → void 
@param calendar
The calendar to set.
inherited

setCandleLightingOffset(
double candleLightingOffset) → void 
A method to set the offset in minutes before AstronomicalCalendar.getSeaLevelSunset sea level sunset that is
used in calculating candle lighting time. The default time used is 18 minutes before sunset. Some calendars use 15
minutes, while the custom in Jerusalem is to use a 40 minute offset. [...]
inherited

setGeoLocation(
GeoLocation geoLocation) → void 
Sets the {@link GeoLocation}
Object
to be used for astronomical calculations. [...]inherited 
setUseElevation(
bool useElevation) → void 
Sets whether elevation above sea level is factored into zmanim calculations for times besides sunrise and sunset.
See isUseElevation for more details. [...]
inherited

toString(
) → String 
Returns a string representation of this object.
inherited
Operators

operator ==(
Object other) → bool 
The equality operator. [...]
inherited
Constants
 ZENITH_1_POINT_583 → const double

The zenith of 1.583° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating netz amiti (sunrise) and shkiah amiti (sunset) based on the opinion of the
Baal Hatanya. [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 1.583
 ZENITH_3_POINT_7 → const double

The zenith of 3.7° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating tzais (nightfall) based on the opinion of the Geonim that tzais is the
time it takes to walk 3/4 of a Mil at 18 minutes a Mil, or 13.5 minutes after sunset. The sun
is 3.7° below GEOMETRIC_ZENITH geometric zenith at this time in Jerusalem on March 16, about 4 days
before the equinox, the day that a solar hour is 60 minutes. [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 3.7
 ZENITH_3_POINT_8 → const double

The zenith of 3.8° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating tzais (nightfall) based on the opinion of the Geonim that tzais is the
time it takes to walk 3/4 of a Mil at 18 minutes a Mil, or 13.5 minutes after sunset. The sun
is 3.8° below [GEOMETRIC_ZENITH geometric zenith at this time in Jerusalem on March 16, about 4 days
before the equinox, the day that a solar hour is 60 minutes. [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 3.8
 ZENITH_3_POINT_65 → const double

The zenith of 3.65° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating tzais (nightfall) according to some opinions. This calculation is based on the position of
the sun getTzaisGeonim3Point65Degrees 13.5 minutes after sunset (3/4 of an 18 minute Mil) in Jerusalem
on March 16, about 4 days before the equinox, the day that a solar hour is 60 minutes which calculates to
3.65° below GEOMETRIC_ZENITH geometric zenith [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 3.65
 ZENITH_3_POINT_676 → const double

The zenith of 3.676° below GEOMETRIC_ZENITH geometric zenith (90°).
todo Add more documentation.
AstronomicalCalculator.GEOMETRIC_ZENITH + 3.676
 ZENITH_4_POINT_8 → const double

The zenith of 5.88° below GEOMETRIC_ZENITH geometric zenith (90°).
todo Add more documentation.
see getTzaisGeonim4Point8Degrees
AstronomicalCalculator.GEOMETRIC_ZENITH + 4.8
 ZENITH_4_POINT_37 → const double

The zenith of 4.37° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating tzais (nightfall) according to some opinions. This calculation is based on the position of
the sun getTzaisGeonim4Point37Degrees 16 7/8 minutes after sunset (3/4 of a 22.5 minute Mil) in
Jerusalem on March 16, about 4 days before the equinox, the day that a solar hour is 60 minutes which calculates
to 4.37° below GEOMETRIC_ZENITH geometric zenith [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 4.37
 ZENITH_4_POINT_61 → const double

The zenith of 4.61° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating tzais (nightfall) according to some opinions. This calculation is based on the position of
the sun getTzaisGeonim4Point37Degrees 18 minutes after sunset (3/4 of a 24 minute Mil) in Jerusalem on
March 16, about 4 days before the equinox, the day that a solar hour is 60 minutes which calculates to 4.61°
below GEOMETRIC_ZENITH geometric zenith [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 4.61
 ZENITH_5_POINT_88 → const double

The zenith of 5.88° below GEOMETRIC_ZENITH geometric zenith (90°).
todo Add more documentation.
AstronomicalCalculator.GEOMETRIC_ZENITH + 5.88
 ZENITH_5_POINT_95 → const double

The zenith of 5.95° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating tzais (nightfall) according to some opinions. This calculation is based on the position of
the sun 24 minutes after sunset in Jerusalem on March 16, about 4 days before the equinox, the day that a solar
hour is 60 minutes, which calculates to 5.95° below GEOMETRIC_ZENITH geometric zenith. [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 5.95
 ZENITH_6_DEGREES → const double

The zenith of 6° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for calculating
tzais (nightfall) based on the opinion of the Baal Hatanya. This calculation is based on the position
of the sun 24 minutes after getSunset sunset in Jerusalem on March 16, about 4 days before the equinox, the day
that a solar hour is 60 minutes, which is 6° below GEOMETRIC_ZENITH geometric zenith. [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 6
 ZENITH_6_POINT_45 → const double

The zenith of 6.45° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating tzais (nightfall) according to some opinions. This is based on the calculations of
Rabbi Yechiel Michel Tucazinsky of the position of
the sun no later than getTzaisGeonim6Point45Degrees 31 minutes after sunset in Jerusalem, and at the
height of the summer solstice, this zman is 28 minutes after_shkiah_. This computes to 6.45° below
GEOMETRIC_ZENITH geometric zenith. [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 6.45
 ZENITH_7_POINT_65 → const double

The zenith of 7.65° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating misheyakir according to some opinions. [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 7.65
 ZENITH_7_POINT_67 → const double

The zenith of 7.67° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating tzais according to some opinions. [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 7.67
 ZENITH_7_POINT_083 → const double

The zenith of 7.083° below GEOMETRIC_ZENITH geometric zenith (90°). This is often referred to as
7°5' or 7° and 5 minutes. This calculation is used for calculating alos (dawn) and
tzais (nightfall) according to some opinions. This calculation is based on the position of the sun 30
minutes after sunset in Jerusalem on March 16, about 4 days before the equinox, the day that a solar hour is 60
minutes, which calculates to 7.0833333° below GEOMETRIC_ZENITH geometric zenith. This is time some
opinions consider dark enough for 3 stars to be visible. This is the opinion of the
Sh"Ut Melamed Leho'il, Sh"Ut Bnei Tziyon, Tenuvas
Sadeh and very close to the time of the Mekor Chesed of
the Sefer chasidim.
todo Confirm the proper source. [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 7 + (5.0 / 60)
 ZENITH_9_POINT_3 → const double

The zenith of 9.3° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating tzais (nightfall) according to some opinions. [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 9.3
 ZENITH_9_POINT_5 → const double

The zenith of 9.5° below [GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating misheyakir according to some opinions. [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 9.5
 ZENITH_9_POINT_75 → const double

The zenith of 9.75° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating alos (dawn) and tzais (nightfall) according to some opinions. [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 9.75
 ZENITH_10_POINT_2 → const double

The zenith of 10.2° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating misheyakir according to some opinions. This calculation is based on the position of the sun
45 minutes before getSunrise sunrise in Jerusalem on March 16, about 4 days before the equinox, the day
that a solar hour is 60 minutes which calculates to 10.2° below GEOMETRIC_ZENITH geometric zenith. [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 10.2
 ZENITH_11_DEGREES → const double

The zenith of 11° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating misheyakir according to some opinions. This calculation is based on the position of the sun
48 minutes before getSunrise sunrise in Jerusalem on March 16, about 4 days before the equinox, the day
that a solar hour is 60 minutes which calculates to 11° below GEOMETRIC_ZENITH geometric zenith [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 11
 ZENITH_11_POINT_5 → const double

The zenith of 11.5° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating misheyakir according to some opinions. This calculation is based on the position of the sun
52 minutes before getSunrise sunrise in Jerusalem on March 16, about 4 days before the equinox, the day
that a solar hour is 60 minutes which calculates to 11.5° below GEOMETRIC_ZENITH geometric zenith [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 11.5
 ZENITH_13_POINT_24 → const double

The zenith of 13.24° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating Rabbeinu Tam's bain hashmashos according to some opinions.
NOTE: See comments on getBainHasmashosRT13Point24Degrees for additional details about the degrees. [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 13.24
 ZENITH_16_POINT_9 → const double

The zenith of 16.9° below geometric zenith (90°). This calculation is used for determining alos
(dawn) based on the opinion of the Baal Hatanya. It is based on the calculation that the time between dawn
and netz amiti (sunrise) is 72 minutes, the time that is takes to walk 4 mil at 18 minutes
a mil (Rambam and others). The sun's position at 72
minutes before getSunriseBaalHatanya netz amiti (sunrise) in Jerusalem on the equinox (on March 16,
about 4 days before the astronomical equinox, the day that a solar hour is 60 minutes) is 16.9° below
GEOMETRIC_ZENITH geometric zenith. [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 16.9
 ZENITH_19_DEGREES → const double

The zenith of 19° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating alos according to some opinions. [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 19
 ZENITH_19_POINT_8 → const double

The zenith of 19.8° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating alos (dawn) and tzais (nightfall) according to some opinions. This calculation is
based on the position of the sun 90 minutes after sunset in Jerusalem on March 16, about 4 days before the
equinox, the day that a solar hour is 60 minutes which calculates to 19.8° below GEOMETRIC_ZENITH geometric zenith [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 19.8
 ZENITH_26_DEGREES → const double

The zenith of 26° below GEOMETRIC_ZENITH geometric zenith (90°). This calculation is used for
calculating alos (dawn) and tzais (nightfall) according to some opinions. This calculation is
based on the position of the sun getAlos120 120 minutes after sunset in Jerusalem on March 16, about 4
days before the equinox, the day that a solar hour is 60 minutes which calculates to 26° below
GEOMETRIC_ZENITH geometric zenith [...]
AstronomicalCalculator.GEOMETRIC_ZENITH + 26.0