Calendar calcualtions

[nilamo]

Calendars are not easy.  Though I think leap years is the main complication.  Time is even worse, with timezones making things very wacky.

Unless you have a good reason to do otherwise, you should probably just use a library.

>>> import datetime as dt
>>> left = dt.date(1999, 11, 24)
>>> right = dt.date(2001, 3, 2)
>>> abs(left - right).days
464