Tisha B’Av is the ninth day of the month of Av, which falls during the month of July or August. This day of mourning and fasting traditionally commemorates national calamities, such as the destruction of both Temples in Jerusalem (by the Babylonian king Nebuchadnezzar in 586 B.C.E. and by the Roman general Vespasian in 70 C.E.), the fall of Bar Kokhba’s fortress in 138 C.E., and the Spanish expulsion of Jews in 1492. Some scholars believe the origins of the holiday lie in primitive people’s fear of the scorching sun at the height of the summer.
Traditional observance of Tisha B’Av focuses on fasting, prayer, reading the Book of Lamentations, and observing prohibitions against certain activities such as getting a haircut, wearing freshly pressed clothing, drinking alcohol, and, in some communities, eating meat.
Humanistic Jews do not observe Tisha B’Av by looking forward to the restoration of the Temple in Jerusalem. Rather, they use this time for reflection and to affirm the power of human connection in times of need and tragedy.