[mplspm]: date/time questions

[Stephen R. Wilcoxon]

Dave's recent post on DateTime modules reminded me of a few questions I've 
been trying to find answers to.

Does anybody have a good algorithm (or module) for converting between solar/
lunar, Chinese, Thai, or any other "obscure" calendars (mostly eastern or 
middle-eastern) and the normal calendar?  Anybody know of any books with 
algorithms for this?

Anybody know what TD time is and how to convert TD <-> UTC?  Based on 
content, I think TD is some astronomical measure of time.  The only good 
Equinox algorithm I've found calculates in TD time - I know TD time matched 
UTC time for some time LONG in the past, but there needs to be corrections 
made (that keep growing as time passes) and I have no idea what the 
correction/conversion alorithm is.




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