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October 2013 Archive

 

 

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D. Hijja is the month of Hajj and Eid al-Adha. The Hilal of D. Hijja 1434 will be seen in N. America in the evening of Oct. 6 (Sunday), making Monday the first date, and Eid al-Adha falling on Wed. Oct. 16.

Caution: Saudi Hajj 2013 date is Sunday, Oct. 13, and Eid al-Adha next day (based on their Oct. 5, 2013 "sighting in Makka??"). In the evening of Oct. 5, 2013, D.Hijja cresecnt moon CANNOT be seen in Makka, Saudi Arabia or anywhere in the world. In Makkah, the moon's age is:14 hours 30 minutes, its angle:7.7 degrees (minimum required 12+), altitude: 3.4 degrees (minimum required 10 degrees above the ground at sunset). The moon sets only 15 minutes after the sunset (minimum LAG should be 42+ minutes.).

Lunar Visibility calculation

ISNA, like Saudi Arabia, Egypt, etc. often hides behind ASSURED CALCULATION of the moon (without telling the Muslims what is BEING CALCULATED?.

Exact calculation of the New Moon( not seen from the earth) was known to the Jews, Babylonians, Hindus, Chinese, Iranians and others.

The Prophet (PBUH) asked the Muslims in Medina NOT TO FOLLOW the Jewish calendar (based on the New Moon at Jerusalem). Instead, he asked the Muslims to look for Hilal (the earliest visible crescent moon) to begin their month from the NEXT DAY.

The Muslims followed this Sunnah as confirmed by the Qur'an (2:189: They ask ...about Ahilla.. Say these crescent moons are the Mawaaqeet (determine the times ....), In 1966, Egyptians and later Saudis (1972-)started their Islamic month by: The Moon sets after the Sun on the New Moon date( in Makka or Cairo) .

Dr. Ilyas did pioneering work in the 1970s. He also mentioned the following paper http://geomete.com/abdali/papers/moon.pdf Written for a general audience, it described the computational criteria for the hilal's visibility. It also formulated the notion of visibility separator curve (which has come to be known as the visibility curve). As hypothesized in the paper, a single parabola on a Mercator map of the globe separates the regions of hilal's visibility and non-visibility. The curve expands towards the west and is symmetrical with respect to some line of latitude. The position of its vertex changes from month to month.

All who wish to learn more must read both.