This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)

CalendarChange


converts the date given in calendar into a date given in calendar

converts the given date .
  • The following settings can be given for and :
GregorianGregorian calendar
JulianJulian calendar
IslamicIslamic calendar
JewishJewish calendar
The Western calendar in current use is the Gregorian calendar. To convert a contemporary Western date to another calendar, use Gregorian for the contemporary Western date.
Israel obtained its independence on May 14, 1948. This finds the Jewish date:
Because the Jewish calendar has a leap month preceding Passover, Mathematica uses a numbering starting with Nissan, the month of Passover:
Israel's independence was declared on the 5th of Iyar, 5708.
This finds the Western date corresponding to the 50th Jewish anniversary:
Between 1582 and 1752, Catholic countries used the Gregorian calendar while Britain and her colonies used the Julian calendar. To convert British and Catholic dates occurring between 1582 and 1752, it is necessary to change calendars from Julian to Gregorian.
George Washington was born February 22nd, 1732. In France, the date was:
Voltaire was born on November 21st, 1694. In Great Britain the date was:
The Russian Orthodox Church still uses the Julian calendar. This finds the Western (Gregorian) date of Greek Orthodox Christmas 2000:
You can find Islamic dates corresponding to Western (Gregorian) dates:
The Islamic calendar has the following months:
The above date is, therefore, the 24th of Ramadan, 1420.
The Western date for the beginning of Ramadan of the Islamic year 1420:
Hours, minutes, and seconds are left unchanged by :
Needs["Calendar`"]
The Western calendar in current use is the Gregorian calendar. To convert a contemporary Western date to another calendar, use Gregorian for the contemporary Western date.
Israel obtained its independence on May 14, 1948. This finds the Jewish date:
In[2]:=
Click for copyable input
Out[2]=
Because the Jewish calendar has a leap month preceding Passover, Mathematica uses a numbering starting with Nissan, the month of Passover:
In[3]:=
Click for copyable input
Israel's independence was declared on the 5th of Iyar, 5708.
 
Needs["Calendar`"]
This finds the Western date corresponding to the 50th Jewish anniversary:
In[2]:=
Click for copyable input
Out[2]=
 
Needs["Calendar`"]
Between 1582 and 1752, Catholic countries used the Gregorian calendar while Britain and her colonies used the Julian calendar. To convert British and Catholic dates occurring between 1582 and 1752, it is necessary to change calendars from Julian to Gregorian.
George Washington was born February 22nd, 1732. In France, the date was:
In[2]:=
Click for copyable input
Out[2]=
 
Needs["Calendar`"]
Voltaire was born on November 21st, 1694. In Great Britain the date was:
In[2]:=
Click for copyable input
Out[2]=
 
Needs["Calendar`"]
The Russian Orthodox Church still uses the Julian calendar. This finds the Western (Gregorian) date of Greek Orthodox Christmas 2000:
In[2]:=
Click for copyable input
Out[2]=
 
Needs["Calendar`"]
You can find Islamic dates corresponding to Western (Gregorian) dates:
In[2]:=
Click for copyable input
Out[2]=
The Islamic calendar has the following months:
In[3]:=
Click for copyable input
The above date is, therefore, the 24th of Ramadan, 1420.
 
Needs["Calendar`"]
The Western date for the beginning of Ramadan of the Islamic year 1420:
In[2]:=
Click for copyable input
Out[2]=
 
Needs["Calendar`"]
Hours, minutes, and seconds are left unchanged by :
In[2]:=
Click for copyable input
Out[2]=
In[3]:=
Click for copyable input
Out[3]=
Because it is a solar and lunar calendar (the year follows the seasons, and the months keep track of the phases of the moon), the Jewish calendar has an extra leap month 7 times every 19 years. This leap month occurs in spring the month preceding Passover, so it is appropriate to count the Jewish months starting with Nisan, the month of Passover, as follows:
Since the Jewish year begins in the fall, this numeration of months will not always follow an increasing order; that is, later dates in the same year may have a smaller number for the month: