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ims# Islamic Microsoft Hijri

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Calendar Description

The Islamic calendar is a lunar calendar used throughout the Arabic and Muslim areas.

Use Case

This version is used in some Microsoft applications, notably Excel.

Definition

Record
yearmonthdaywsday

The year consists of twelve lunar months which in a common year alternate between of 30 and 29 days. In a leap year, the 12th month has 30 days instead of the usual 29. A common year has 354 days and a leap year 355 days.

Leap years occur on a 30 year cycle in years 2, 5, 7, 10, 13, 16, 18, 21, 24, 26 and 29.

The Epoch is set at the astronomical epoch, which is:-
iyearmonthday
111
=
jyearmonthday
622715
=
jdnday
1948439
.

Script

Default Script
scheme ims { name "Islamic Microsoft Hijri"; base islamic IIa; grammar i; }

The scheme uses the "i" grammar as defined for the Islamic Tabular calendar.


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18th December 2014