What Day Is Tisha B'Av 2024. Tisha b'av primarily commemorates the destruction of the first and second temples, both of which were destroyed on the ninth of av (the first by the babylonians in 586 b.c.e.; Tisha b'av means the ninth (day) of av. it occurs in july or august.
תשעה באב or ט׳ באב , “the ninth of av,”) is an annual fast day in judaism, named for the ninth day (tisha) of the month of av in the hebrew calendar. When jews became disillusioned with sabbatai zevi after his forced conversion to islam in 1666, tisha b’av was taken up anew with new vigor, with extreme public mourning rites being viewed as a badge of orthodox piety.