As of Version 10.0, calendar functionality is built into the Wolfram Language »
is an option for calendar functions that specifies which calendar system to use.
Details and Options
- To use Calendar, you first need to load the Calendar Package using Needs["Calendar`"].
- Calendar->system specifies to use calendar system system.
- The following settings can be given:
Gregorian Gregorian calendar Julian Julian calendar Islamic Islamic calendar Jewish Jewish calendar
- With Calendar->Automatic, the Julian calendar is used before September 3, 1752, and the Gregorian calendar after September 13, 1752.