#[DateTime]
Attribute on parameters and properties.
Marks a string as a date with a time of day, 2026-11-14T20:00, or with time: false as a date, 2026-11-14;
'' means no date. The value is the local time of the site, without time zone: the time an editor chose, as it
is shown on the site. Its schema gets a pattern, so WordPress rejects other formats, and the value factory also
rejects dates that do not exist, such as 2026-02-30. Editors choose it with the date picker of WordPress.
Values in this format sort and compare as text, so queries use the conditions of a string field
(greaterOrEqual(), between()) and sort by it.