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Calendar`

Calendar

As of Version 10.0, calendar functionality is built into the Wolfram Language »

Calendar

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:
  • GregorianGregorian calendar
    JulianJulian calendar
    IslamicIslamic calendar
    JewishJewish calendar
  • With Calendar->Automatic, the Julian calendar is used before September 3, 1752, and the Gregorian calendar after September 13, 1752.

Examples

Basic Examples  (3)Summary of the most common use cases

In[1]:=1
✖
https://wolfram.com/xid/0cf9tark1uk5u-iuyy1z

Compute the number of days in the Islamic year 1420:

In[2]:=2
✖
https://wolfram.com/xid/0cf9tark1uk5u-fruzal
Out[2]=2
In[1]:=1
✖
https://wolfram.com/xid/0cf9tark1uk5u-bjpas3

Compute the number of days in the Jewish year 5760:

In[2]:=2
✖
https://wolfram.com/xid/0cf9tark1uk5u-l6i59
Out[2]=2
In[1]:=1
✖
https://wolfram.com/xid/0cf9tark1uk5u-bu6t25

In the Julian calendar, the year 1900 was a leap year:

In[2]:=2
✖
https://wolfram.com/xid/0cf9tark1uk5u-06f2l
Out[2]=2

This is not true in the standard (Gregorian) Western calendar:

In[3]:=3
✖
https://wolfram.com/xid/0cf9tark1uk5u-dt47nb
Out[3]=3