LocalDateTime class

A date-time without a timezone, such as 2023-04-10 09:30.

A LocalDateTime is immutable. It cannot represent a specific point in time without an additional offset or timezone. Time is stored to microsecond precision.

Working with `LocalDateTime`s

To create a LocalDateTime:

final now = LocalDateTime.now();
final moonLanding = LocalDateTime(1969, 7, 20, 18, 4);

You can add and subtract different types of time intervals, including:

Duration - add and subtract
Period - + and -
Individual units of time - plus and minus

LocalDateTime behaves the same for all 3 types of time intervals.

final tomorrow = now.add(const Duration(days: 1);
final dayAfterTomorrow = now + const Period(days: 2);
final threeDaysAfter = now.plus(days: 3);

LocalDateTimes can be compared using the comparison operators such as <.

print(now < tomorrow); // true
print(dayAfterTomorrow >= now); // true

You can also truncate, round, ceil and floor LocalDateTime.

print(moonLanding.truncate(to: TimeUnit.hours); // 1969-07-20 18:00
print(moonLanding.round(DateUnit.days, 7);      // 1969-07-21 00:00
print(moonLanding.ceil(DateUnit.days, 7);       // 1969-07-21 00:00
print(moonLanding.floor(DateUnit.days, 7);      // 1969-07-14 00:00

Other resources

See ZonedDateTime to represent date and times with timezones.

Mixed-in types

Orderable<LocalDateTime>

Constructors

LocalDateTime(int year, [int month = 1, int day = 1, int hour = 0, int minute = 0, int second = 0, int millisecond = 0, int microsecond = 0]): Creates a LocalDateTime.
LocalDateTime.fromEpochMicroseconds(EpochMicroseconds microseconds): Creates a LocalDateTime from the milliseconds since Unix epoch (January 1st 1970).
LocalDateTime.fromEpochMilliseconds(EpochMilliseconds milliseconds): Creates a LocalDateTime from the milliseconds since Unix epoch (January 1st 1970).
LocalDateTime.now(): Creates a LocalDateTime that represents the current date-time.

Properties

date → LocalDate: The date.
no setter
day → int: The day.
no setterinherited
dayOfYear → int: The ordinal day of the year.
no setter
daysInMonth → int: The number of days in the month.
no setter
epochMicroseconds → EpochMicroseconds: The microseconds since Unix epoch, assuming this datetime is in UTC.
no setter
epochMilliseconds → EpochMilliseconds: The milliseconds since Unix epoch, assuming this datetime is in UTC.
no setter
firstDayOfMonth → LocalDateTime: The first day of the month.
no setter
firstDayOfWeek → LocalDateTime: The first day of the week.
no setter
hashCode → int: The hash code for this object.
no setterinherited
hashValue → int: This object's hash.
no setteroverride
hour → int: The hour.
no setterinherited
lastDayOfMonth → LocalDateTime: The last day of the month.
no setter
lastDayOfWeek → LocalDateTime: The last day of the week.
no setter
leapYear → bool: Whether this year is a leap year.
no setter
microsecond → int: The microsecond.
no setterinherited
millisecond → int: The millisecond.
no setterinherited
minute → int: The minute.
no setterinherited
month → int: The month.
no setterinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
second → int: The second.
no setterinherited
time → LocalTime: The time.
no setter
weekday → int: The day of the week.
no setter
weekOfYear → int: The ordinal week of the year.
no setter
year → int: The year.
no setterinherited

Methods

add(Duration duration) → LocalDateTime: Returns a copy of this with the duration added.
at(Timezone timezone) → ZonedDateTime: Converts this to a ZonedDateTime.
ceil(TemporalUnit unit, int value) → LocalDateTime: Returns a copy of this ceiled to the nearest unit and value.
compareTo(LocalDateTime other) → int: Compares this object to another object.
override
copyWith({int? year, int? month, int? day, int? hour, int? minute, int? second, int? millisecond, int? microsecond}) → LocalDateTime: Returns a copy of this with the updated units of time.
difference(LocalDateTime other) → Duration: Returns the difference between this and other.
floor(TemporalUnit unit, int value) → LocalDateTime: Returns a copy of this floored to the nearest unit and value.
minus({int years = 0, int months = 0, int days = 0, int hours = 0, int minutes = 0, int seconds = 0, int milliseconds = 0, int microseconds = 0}) → LocalDateTime: Returns a copy of this with the units of time subtracted.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
plus({int years = 0, int months = 0, int days = 0, int hours = 0, int minutes = 0, int seconds = 0, int milliseconds = 0, int microseconds = 0}) → LocalDateTime: Returns a copy of this with the units of time added.
round(TemporalUnit unit, int value) → LocalDateTime: Returns a copy of this rounded to the nearest unit and value.
subtract(Duration duration) → LocalDateTime: Returns a copy of this with the duration subtracted.
toNative() → DateTime: Converts this to a DateTime in UTC.
toString() → String: Returns a ISO formatted string representation.
override
truncate({required TemporalUnit to}) → LocalDateTime: Returns a copy of this truncated to the TemporalUnit.

Operators

operator +(Period period) → LocalDateTime: Returns a copy of this with the period added.
operator -(Period period) → LocalDateTime: Returns a copy of this with the period subtracted.
operator <(LocalDateTime other) → bool: Returns true if this is less than other.
inherited
operator <=(LocalDateTime other) → bool: Returns true if this is equal to or less than other.
inherited
operator ==(Object other) → bool: The equality operator.
inherited
operator >(LocalDateTime other) → bool: Returns true if this is more than other.
inherited
operator >=(LocalDateTime other) → bool: Returns true if this is equal to or more than other.
inherited