LocalDateTime

struct

Public Struct LocalDateTime Implements Comparable, Hashable, Printable, Defaultable

Local meeting = LocalDateTime(2024, 3, 9, 14, 30)
Expect("{meeting}" == "2024-03-09T14:30:00")
Expect(meeting.AddDays(1).Date == Date(2024, 3, 10))
Expect(LocalDateTime.Parse("2024-03-09T14:30:00") == meeting)

std/time/calendar.fb, line 407

• Public New(date: Date, time: TimeOfDay) constructor #

  The time of day time on date.

• @PanicsAtCaller Public New(year: Int, month: Int, day: Int, hour: Int = 0, minute: Int = 0, second: Int = 0, nanosecond: Int = 0) constructor #

  The date and time, which panics when either isn't one.

• Public Static Method DefaultValue(): LocalDateTime static method #

  Midnight on 1970-01-01.

• Public Static Method MinValue(): LocalDateTime static method #

  The earliest LocalDateTime there is.

• Public Static Method MaxValue(): LocalDateTime static method #

  The latest LocalDateTime there is.

• Public Static Method Now(zone: TimeZone): LocalDateTime static method #

  Now, where the zone is, or the OS's zone.

• Public Static Method Now(): LocalDateTime static method #

  Now, in the OS's zone.

• Public Static Method Parse(text: String): LocalDateTime? static method #

  The date and time ISO 8601 writes, like "2026-10-23T12:30:00", with "T", "t", or a space between them, or Null.

• @PanicsAtCaller Public Static Method Parse(text: String, pattern: String): LocalDateTime? static method #

  The date and time the text writes as the pattern says (see format.fb), or Null. A pattern without the year, or without the month and day or the day of the year, panics; the time's parts it doesn't have are 0.

• Public Property Date: Date property #

  Its date.

• Public Property Time: TimeOfDay property #

  Its time of day.

• Public Property Year: Int property #

  Its date's year.

• Public Property Month: Int property #

  Its date's month, from 1 to 12.

• Public Property DayOfMonth: Int property #

  Its date's day of the month, from 1.

• Public Property Hour: Int property #

  Its hour, from 0 to 23.

• Public Property Minute: Int property #

  Its minute, from 0 to 59.

• Public Property Second: Int property #

  Its second, from 0 to 59.

• Public Property Nanosecond: Int property #

  Its nanosecond of the second.

• Public Property DayOfWeek: Weekday property #

  Its date's day of the week.

• Public Property DayOfYear: Int property #

  Its date's day of the year, from 1.

• @PanicsAtCaller Public Method AddDays(count: Int64): LocalDateTime method #

  The same time count days after, or before, as Date's AddDays goes.

• @PanicsAtCaller Public Method AddMonths(count: Int64): LocalDateTime method #

  The same time count months after, or before, as Date's AddMonths goes.

• @PanicsAtCaller Public Method AddYears(count: Int64): LocalDateTime method #

  The same time count years after, or before, as Date's AddYears goes.

• Public Method StartOfDay(): LocalDateTime method #

  Midnight on its day.

• @PanicsAtCaller Public Method InZone(zone: TimeZone, disambiguation: Disambiguation = Disambiguation.COMPATIBLE): ZonedDateTime method #

  It where the zone is. When the zone's clocks show it twice, as they're turned back, or never, as they skip it, the disambiguation says which moment it is (see zone.fb).

• @PanicsAtCaller Operator +(a: LocalDateTime, b: Duration): LocalDateTime operator #

  b after a, on a clock that's never turned: 23:00 plus 2 hours is 01:00 the next day.

• @PanicsAtCaller Operator -(a: LocalDateTime, b: Duration): LocalDateTime operator #

  b before a, on a clock that's never turned: 01:00 minus 2 hours is 23:00 the day before.

• @PanicsAtCaller Operator -(a: LocalDateTime, b: LocalDateTime): Duration operator #

  How long it is from b to a, on a clock that's never turned, which panics past the longest Duration.

• Operator <(a: LocalDateTime, b: LocalDateTime): Bool operator #

  Whether a is before b.

• Public Method ToString(): String method #

  As ISO 8601 writes it, like "2026-10-23T12:30:00".

• @PanicsAtCaller Public Method Format(pattern: String): String method #

  As the pattern says (see format.fb): Format("yyyy-MM-dd HH:mm") is "2026-10-23 12:30". A pattern letter of a zone panics.