XSLT and XPath function reference in alphabetical order
(Excerpt from “XSLT 2.0 & XPath 2.0” by Frank Bongers, chapter 5, translated from German)
Value extraction from time values, date values and duration
The timezone component of a timestamp indication in the form of a duration value of xs:dayTimeDuration type.
Optional. A value of xs:dateTime type which corresponds to a date value with daytime indication whose timezone component shall be extracted.
Purpose of use:
The function extracts the value of the timezone offset of the UTC time of a timestamp value passed on in the form of a duration value of xs:dayTimeDuration type.
The outputted value may move in the interval between +14:00 (PT14H) and -14:00 hours (-PT14H). If the empty sequence is passed on, the function returns an empty result sequence.
Example - extracting the timezone from a timestamp value:
returns the value -05:00 in the form of -PT5H as xs:dayTimeDuration.
The function is not available
fn:timezone-from-dateTime($arg as xs:dateTime?) as xs:dayTimeDuration?
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