All Poosam timings are calculated according to ⚠ Indian Standard Time (IST). - Download poosam calendar 1866

S.No	Gregorian Date	Weekday	Traditional Month & Date	Poosam Start Time	Poosam End Time	Star Duration
1	23-12-1866	Sunday	অগ্রহায়ণ 10	23-12-1866 07:00 PM IST	24-12-1866 05:00 PM IST	22 Hours 0 Mins 1 Secs