fn:dateTime

Combines the given date and time. The result has a timezone if either of the inputs has a timezone; if they both have a timezone, then the two timezones must be the same.

dateTime($date as xs:date?, $time as xs:time?) ➔ xs:dateTime?

Namespace

http://www.w3.org/2005/xpath-functions

Links to W3C specifications

XPath 3.1 Functions and Operators

XPath 4.0 Functions and Operators

Saxon availability

Available in XPath 2.0, XSLT 2.0, XQuery 1.0, and later versions. Available in all Saxon editions. Available for all platforms.

Notes on the Saxon implementation

The result will be an instance of xs:dateTimeStamp, and retains nanosecond precision (or more typically, the precision of the system clock).