On the ninth of the Hebrew month of Av, which usually falls on July or August, Jews around the world commemorate the destruction of the Jewish temple which took place on two occasions in Jerusalem. On this day many Jews and Israelis come out here to the old Jewish quarter in Jerusalem, and to the Wailing Wall, to pray and grieve this loss to the Jewish people. On the 10 days prior to Tisha B’Av, many Jews avoid celebrating happy events, listening to music, eating meat. On Tisha B’Av itself, those who observe, fast for 25 hours.