fn.dayFromDate( $arg as Date? ) as Number?
Returns an xs:integer between 1 and 31, both inclusive, representing the day component in the localized value of $arg.
If $arg is the empty sequence, returns the empty sequence.
|$arg||The date whose day component will be returned.|
fn.dayFromDate(xs.date("1999-05-31-05:00")) => 31
fn.dayFromDate(xs.date("2000-01-01+05:00")) => 31