FunctX XSLT Function Library > Dates, Times and Durations > Time Zones >

fn:adjust-date-to-timezone

Adjusts a date to a specific timezone, or no timezone

Description

The fn:adjust-date-to-timezone function behaves differently depending on whether the $arg date value already has a time zone, and on the value of the time zone provided.

The $timezone argument is expressed as an xs:dayTimeDuration, for example -PT5H for US Eastern Standard Time. If $timezone is the empty sequence, it is assumed that the desired result is a date value that is in no time zone. If $timezone is omitted from the function call, it is assumed to be the implicit time zone.

The $arg date is assumed for the sake of time zone calculation to be just like an xs:dateTime value whose time is midnight (00:00:00). If $arg does not already have a time zone, its date part stays the same, but it is now associated with the specified time zone.

If $arg already has a time zone, its value is adjusted to that time zone.

This description is © Copyright 2007, Priscilla Walmsley. It is excerpted from the book XQuery by Priscilla Walmsley, O'Reilly, 2007. For a complete explanation of this function, please refer to Appendix A of the book.

Arguments and Return Type

Examples

adjust-date-to-timezone(
   xs:date('2006-02-15'),
   xs:dayTimeDuration('-PT8H'))

2006-02-15-08:00

adjust-date-to-timezone(
   xs:date('2006-02-15-03:00'),
   xs:dayTimeDuration('-PT8H'))

2006-02-14-08:00

adjust-date-to-timezone(
   xs:date('2006-02-15'), ())

2006-02-15

adjust-date-to-timezone(
   xs:date('2006-02-15-03:00'), ())

2006-02-15

adjust-date-to-timezone(
   xs:date('2006-02-15'))

2006-02-15-05:00

adjust-date-to-timezone(
   xs:date('2006-02-15-03:00'))

2006-02-14-05:00 

See Also

History