| supports all known variants of the tabular Islamic calendar• based on the tabular Islamic calendar• For Shia, the martyrdom of , the grandson of Muhammad, and his followers | 27 Rajab for majority of Muslims• |
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| Generally 6th Day of Every Month is celebrated and observed as Chatthi• 21 Ramadan Ali ibn Abi Talib's martyrdom | with date converter valid from 1937 to 2077• 3 Sha'ban Birthday of Husayn ibn Ali |
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