9 Av Fast 2025. This places the fast day somewhere. The saddest day on the jewish calendar is the ninth of av, “tisha b'av, the date on which both our holy temples were destroyed, and exile, persecution and spiritual darkness began.

This places the fast day somewhere. This is the first of five national tragedies that occurred on av 9 listed by the talmud (taanit 4:6), due to which the day was designated as a fast day.