For 10 points, identify this holiday named for the Jewish calendar date on which it takes place, which is the day of such disasters in Jewish history as the destruction of the both Jerusalem Temples.
It occurs within a week of the Shabbat Hazon and marks the end of a three-week period where no marriages or haircuts occur, which begins on the Fast of Tammuz and is called the Bein Hametzarim. The Haredis use this day instead of Yom Ha'Shoah to honor Holocaust victims, and it is marked by reading Lamentations and covering the ark in black cloth. The outbreak of World War I, the 1290 expulsion from England, and the opening of Treblinka in 1942 all occurred on this day. For 10 points, identify this holiday named for the Jewish calendar date on which it takes place, which is the day of such disasters in Jewish history as the destruction of the both Jerusalem Temples.
It occurs within a week of the Shabbat Hazon and marks the end of a three-week period where no marriages or haircuts occur, which begins on the Fast of Tammuz and is called the Bein Hametzarim.
{Tisha b’Av} [or {Ninth of Av}]