What Day Is Tisha B'Av 2024 Coming Out. Tisha b’av, the 9th day of the month of av, is the saddest day on the jewish calendar, on which we fast, deprive ourselves and. Tisha b’av (the fast of the ninth of av) is the darkest day on the jewish calendar, a day of communal mourning to commemorate the many tragedies that have befallen the jewish people,.
Five misfortunes befell our ancestors. The fast of tisha b’av is observed on the hebrew calendar date of 9 av (or 10 av, when 9 av is shabbat ).