Datetime

An ISO 8601 compliant date and time type.

Syntax

A datetime literal consists of a date fragment and a time fragment, separated by the character T.

The date fragment consists of the following values, separated by a -:

either a four-digit year or a sign with any number of digits for the year (e.g. +252525 meaning year 252525),
a two-digit month of the year,
and a two-digit day of that month.

The time fragment consists of the following values, separated by ::

a two-digit hour between 00 and 24,
a two-digit minute between 00 and 59,
a two-digit second between 00 and 60 with up to nine digits after the decimal point.

Example datetime literals

2024-03-30T12:00:00
+12345-09-21T12:34:56.789

#!test[read]
#{{
match
    let $x = 2024-03-30T12:00:00;
    let $y = +12345-09-21T12:34:56.789;
#}}

#!test[schema]
define
  attribute local-sunset value datetime;

#!test[write]
insert
  $_ isa local-sunset 2025-01-10T16:13;