To help you stay in practice with manual calculation of DT differences?

Possible hint of problems, tho: in the doc under the heading "Date Parsing" where data starts out as "Sun" and the module returns "Wed", the author, Ricardo SIGNES, says "(see, it's even smart enough to fix my obvious date bug)."

I don't imagine that's a lot of help... but it exists (and to paraphrase the philosopher) therefore I cite it.

      ;-)