Tish'a B'Av for Hebrew Year 5785 begins at sundown on Saturday, 2 August 2025 and ends at nightfall on Sunday, 3 August 2025 . Tisha B'Av (Hebrew: 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. This day commemorates a number of disasters in Jewish history, primarily the destruction of both Solomon's Temple by the Neo-Babylonian Empire and the Second Temple by the Roman Empire in Jerusalem.