August 21
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August 21 is the 233rd day of the year (234th in leap years) in the Gregorian calendar; 132 days remain until the end of the year.
- 1969 CE - Demise of Sayyid Muhammad Badkuba'i, One of the seminary professors in Tabriz and an active cleric against the Russian Bolsheviks. (Jumada II 7, 1389)