Not sure what bugs and/or fixes there are/have been. The beauty of alternate methods is you get to choose what's best for your need.

I'm not familiar with what in WSH would simplify things. Date and time can take different formats so various methods are needed. IMHO there are enough UDFs around to address the various needs.

I think intrinsic code to handle all the diverse needs will bloat KiX for the many and benefit the few. My two cents anyway.
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