What Day Is Tisha B'Av 2024 Coming Out. Here is everything you need to know. The fast observed on tisha b’av begins at sundown at the end of 8th av, and lasts for 25 hours until nightfall on the 9th av.

Tisha b’av is the date on which 10 of the 12 spies returned to moses and the jewish people with a bad report about the land of israel. The fast of tisha b’av 2024 (the ninth of av) begins at sundown on august 12, 2024, and concludes at nightfall on august 13, 2024.