December 31
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December 31 is the 365th day of the year (366th in leap years) in the Gregorian calendar.
- 1896 CE - Demise of Muhammad Baqir Fisharaki (Rajab 26, 1314 AH)
- 1911 CE - Martyrdom of Thiqat al-Islam Tabrizi by Russian agents in Tabriz (Muharram 10, 1330 AH)
- 1951 CE - Demise of Mirza Abu l-Qasim Hikmat (Rabi' II 2, 1371 AH)
- 1957 CE - Demise of al-Sayyid 'Abd al-Husayn Sharaf al-Din al-'Amili, a Shi'a mujtahid and the author of al-Muraja'at and al-Nass wa l-ijtihad. (Jumada II 8, 1377 AH)
- 1990 CE - Foundation of Ahl al-Bayt (a) World Assembly (Jumada II 13, 1411 AH)