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Year 624 was a leap year ... and does not return for more than four years. April 9 – (15 Shawwal 2 AH) ... April 20 – (27th day of the 3rd month of the 6th year ...
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The year 624 BC was a year of the pre-Julian Roman calendar. In the Roman Empire , it was known as year 130 Ab urbe condita . The denomination 624 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
The administrative year consisted of 12 months of exactly 30 days each. In the 4th and 3rd millennia BCE, extra months were occasionally intercalated (in which case the year is 390 days), but by the beginning of the 2nd millennium BCE it did not make any intercalations or modifications to the 360-day year. [3]
[2] [3] The war started in March 624 with the Battle of Badr, [4] and concluded with the Conquest of Mecca. [5] Muhammad, born in Mecca, began spreading Islam in the city at the age of 40. Initially, he met no opposition from the Meccans, who were indifferent to his activities until he attacked their beliefs.
Because the Gregorian cycle of 400 years has exactly 146,097 days, i.e. exactly 20,871 weeks, one can say that the Gregorian so-called solar cycle lasts 400 years. [2] Calendar years are usually marked by Dominical letters indicating the first Sunday in a new year, thus the term solar cycle can also refer to a repeating sequence of Dominical ...
Its leap years occur at the same time [40] [13] and its dates will also shift forward one day relative to the Gregorian calendar in AD 2100 [15] (2092 EC). [ 41 ] The unusual calendar is notably used in Ethiopian tourist information to advertise the country's "thirteen months of sunshine".
17 December [8] 1432 AH: Tue/Wed 7/8 December 2010: 6 December [9] 1433 AH: Sun Nov 27, 2011 (Close to the Solar eclipse of November 25, 2011) 26 November [10] 1434 AH: Thu/Fri 14/15 Nov 2012 (Close to the Solar eclipse of November 13, 2012) 15 November [11] 1435 AH: Mon/Tue 4/5 Nov 2013 (Close to the Solar eclipse of November 3, 2013) 1436 AH