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February 10, 2018 7:18 pm at 7:18 pm
#1466384
Reb Eliezer
Participant
December 25 is not nittel. Pope Gregory in 1589 changed the calendar removing 10 or 11 days. Also full 100 century dates e.g. 1900 are not leap years anymore only when divisible by 400. So January 6 is now nittel only.