All Poosam timings are calculated according to ⚠ Indian Standard Time (IST). - Download poosam calendar 1900

S.No	Gregorian Date	Weekday	Traditional Month & Date	Poosam Start Time	Poosam End Time	Star Duration
1	09-12-1900	Sunday	വൃശ്ചികം 25	09-12-1900 04:50 PM IST	10-12-1900 05:50 PM IST	25 Hours 0 Mins 1 Secs