7/28/2019 Islamic Lunar Calender

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** What does an Islamic year look like?i.e. the months

** What does the Quran say about measurement of time?

[Quran - 9.36] Surely the number of months with Allah is twelve months in Allah's ordinance since the daywhen He created the heavens and the earth..

[Quran - 31:29] Seest thou not that Allah merges Night into Day and he merges Day into Night; that He has

subjected the sun, and the moon (to his Law), each running its course for a term appointed; and that Allahis well-acquainted with all that ye do?

[Quran - 103: 1..3] By (the Token of) Time (through the ages),- Verily Man is in loss, - Except such as haveFaith, and do righteous deeds, and (join together) in the mutual teaching of Truth, and of Patience andConstancy.

** Phases of the Moon:

** How is an Islamic month determined:

Each month starts when the lunar crescent is first seen after a new moon.

Although new moons may be calculated quite precisely, the actual visibility of the crescent is difficult topredict. It depends on factors such as weather, the optical properties of the atmosphere, and the locationof the observer. Therefore in some cases it may be difficult to give accurate information in advance aboutwhen a new month will start.

Furthermore, in some areas Muslims depend on a local sighting of the moon, whereas in other areas auniversal sighting is accepted. (i.e. if a new crescent is seen anywhere in the world it is accepted forcommunities the world over). Both are valid Islamic practices, but they may lead to different starting daysfor the months.

** Rules for the Islamic Calendar in Different Countries

The Islamic calendar is based on visibility of the crescent Moon. We know perfectly well where the Moonand the Sun are at any given time, but how light must the Moon be and how dark must the sky be before wecan see the crescent? And what if the weather is bad?

In spite of these difficulties, some Muslim communities base their calendar on actual Moon sightings. This isdone in India, Pakistan, and Bangladesh.

In some parts of the world there is a growing trend to determine the start of the new lunar month accordingto the minimum criteria required for sighting the new crescent. This is .. the age of the new moon must beat least 8.5 hours to 15.5 hours and the separation between the sun and the moon must be at least 11degrees, to be able to be seen with the naked eye.

In Saudi Arabia and most of the Gulf countries they have simplified the calendar. They start the lunarmonth if the Moon sets after the Sun on the 29th day of the previous month, as seen from Mecca.

** How does one count years?

Years are counted since the Hijra, that is, Prophet Mohammed's (Peace be upon him) migration to Medina,which is assumed to have taken place 16 July C.E. 622 (Julian calendar). On that date AH 1 started (AH =Anno Hegirae = year of the Hijra).

Note that although only 2002 - 622 = 1380 years have passed in the Christian calendar, 1423 years havepassed in the Islamic calendar, because its year is consistently shorter (by about 11 days) than the tropicalyear used by the Christian calendar.