Describe the bug

According to the op:subtract-dates function, the implicit timezone is intended to be used for date, dateTime, and time values without a timezone. This is currently not supported by the implementation.

Who is the bug affecting

The Metapath implementation does not fully conform to the XPath 3.1 specification. Users expecting conformant behavior will be affected.

How do we replicate this issue

Need to investigate the full extent of this issue.

Expected behavior (i.e. solution)

Need to investigate the requirements in the XPath 3.1 and XPath 3.1 Functions and Operators specifications. May also need to invistigate the proper data type construction behavior for the data type cast operators.

This issue will be update with more information based on this research.

Other comments

No response