# fn:hours-from-dateTime - XPath XQuery Reference

Returns the hours component of an xs:dateTime.deterministiccontext-independentfocus-independentIf $arg is the empty sequence, the function returns the empty sequence.Otherwise, the function returns an xs:integer between 0 and 23, both
            inclusive, representing the hours component in the local value of $arg.fn:hours-from-dateTime(xs:dateTime("1999-05-31T08:20:00-05:00"))8fn:hours-from-dateTime(xs:dateTime("1999-12-31T21:20:00-05:00"))21fn:hours-from-dateTime(fn:adjust-dateTime-to-timezone(xs:dateTime("1999-12-31T21:20:00-05:00"),
                  xs:dayTimeDuration("PT0S")))2fn:hours-from-dateTime(xs:dateTime("1999-12-31T12:00:00"))12fn:hours-from-dateTime(xs:dateTime("1999-12-31T24:00:00"))0