File: htz.el.html
All date parsing functions accept the output of any other parsing function as input, so one can convert to a sortable date format, do a compare and the display the result in a user selected format. All date formats use a 4-digit year, so there are no problems around the turn of the century.
Hyperbole uses this package to normalize all worldwide date times to Universal Time (Greenwich Mean Time), so that Hyperbole buttons created by users in different timezones will sort by time properly.