tkcalendar is a python module that provides the Calendar and DateEntry widgets for Tkinter. The DateEntry widget is similar to a Combobox, but the drop-down is not a list but a Calendar to select a date.
tkcalendar is compatible with both Python 2 and Python 3.
It support all locale settings supported by the system and the colors are customizable.
Python module to convert dates between different calendar systems (Gregorian, Julian, ISO, Hebrew, Islamic, Mayan, Indian Civil, Baha'i, Persian, French Republican).
Additionally, a module exists for retrieving the Gergorian dates for US holidays
A set of Python modules and classes with calendar-functions, mostly notable handling of holidays. This is not another date/time-manipulation module but uses mxDateTime.