Date Calculations

[Per Kistler]

Hi All

I'm making some Date Calculaton class with things like
deltaDays, addDays, daysInYear and so on, above the calendar 
and time classes. After some 300 lines I thought, I better
ask, whether that has already been done by someone else.
How is this?

Regards, Per.
-- 
Per Kistler kistler at fnmail.com / kistler at gmx.net
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