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