CopticDate class

A date in the Coptic calendar.

Inheritance

• Object
• ILibCalendarDate
• CopticDate

Constructors

CopticDate({int? year, int? month, int? day, int? hour, int? minute, int? second, int? millisecond, double? julianDay, double? rd, int? unixtime, String? locale, String? timezone, bool? dst})

Create a Coptic date from components, a Julian Day, or unix time.

Properties

day → int?

The day of the month in this date's own calendar, or null if unspecified.

no setter, inherited

dst ↔ bool?

Optional DST disambiguation for the overlap hour at the end of DST, when the same local wall time occurs twice. Null when unspecified.

getter/setter pair, inherited

hashCode → int

The hash code for this object.

no setter, inherited

hour → int?

The hour of the day (0–23), or null if unspecified.

no setter, inherited

millisecond → int?

The millisecond of the second (0–999), or null if unspecified.

no setter, inherited

minute → int?

The minute of the hour (0–59), or null if unspecified.

no setter, inherited

month → int?

The month (1-based) in this date's own calendar, or null if unspecified.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

second → int?

The second of the minute (0–59), or null if unspecified.

no setter, inherited

timezone → String?

The IANA timezone id associated with this date, or null if none.

no setter, override

tzOffsetDays ↔ double

Timezone offset in fractional days (east of UTC), cached after the first timezone resolution so repeated queries avoid redundant DST lookups.

getter/setter pair, inherited

year → int?

The year in this date's own calendar, or null if unspecified.

no setter, inherited

Methods

adjustRdForTimezone(double rd) → double

Adjust the rata die rd (from-components / wall-clock) to UTC by subtracting the timezone offset. Updates tzOffsetDays as a side-effect.

inherited

after(int dayOfWeek) → ILibCalendarDate

The nearest date strictly after this date whose day of week is dayOfWeek.

inherited

before(int dayOfWeek) → ILibCalendarDate

The nearest date strictly before this date whose day of week is dayOfWeek.

inherited

calcTimezoneOffset() → void

Resolve and cache tzOffsetDays for the from-UTC-instant path.

inherited

firstSunday(int year) → double

The rata die of the first Sunday on or after January 1 of year, used as the anchor for ISO week-of-year calculations.

inherited

getCalendar() → String

The name of the calendar this date belongs to (e.g. 'gregorian').

override

getDayOfWeek() → int

The day of the week for this date: 0 = Sunday through 6 = Saturday.

override

getDayOfYear() → int

The ordinal day number within the current year (1 = January 1st).

override

getDays() → int

The day-of-month component in this calendar.

override

getEra() → int

The era of this date: a calendar-specific code (e.g. 1 = CE, -1 = BCE for the Gregorian calendar).

override

getHours() → int

The hour component (0–23).

override

getJulianDay() → double

The Julian Day equivalent to this date's instant as a number.

override

getMilliseconds() → int

The millisecond component (0–999).

override

getMinutes() → int

The minute component (0–59).

override

getMonths() → int

The month component (1-based) in this calendar.

override

getRataDie() → double

The Rata Die (fixed day) number of this date's instant, regardless of its calendar.

override

getRataDieInstance() → ILibRataDie

The ILibRataDie instance backing this date.

override

getSeconds() → int

The second component (0–59).

override

getTime() → int

The unix time (milliseconds since the epoch) equivalent to this date, or -1 when the instant falls outside the representable range.

inherited

getTimeExtended() → int

The extended unix time equivalent to this date, covering instants outside the range representable by getTime.

inherited

getTimeZone() → String?

The timezone associated with this date as a string, or null if none.

inherited

getWallClockRd() → double

The rata die of this date's wall-clock instant (UTC rata die + tzOffsetDays).

inherited

getWeekOfMonth(String? locale) → int

The ordinal number of the week within the month.

inherited

getWeekOfYear() → int

The ISO 8601 week number within the current year.

inherited

getYears() → int

The year component in this calendar.

override

newDateFromRd(double rd) → CopticDate

Create a new date of this calendar type from the given rata die rd.

override

newRd({required int year, required int month, required int day, required int hour, required int minute, required int second, required int millisecond}) → ILibRataDie

Create the ILibRataDie for this calendar from the given components.

override

newRdFromRd(double rd) → ILibRataDie

Create the ILibRataDie for this calendar from an existing rata die rd.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

onOrAfter(int dayOfWeek) → ILibCalendarDate

The nearest date on or after this date whose day of week is dayOfWeek.

inherited

onOrBefore(int dayOfWeek) → ILibCalendarDate

The nearest date on or before this date whose day of week is dayOfWeek (0 = Sunday … 6 = Saturday), evaluated in wall-clock time.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited