Tisha B'Av
Tisha b'Av (Hebrew: תִּשְׁעָה בְּאָב, romanized: Tišʿā bəʾĀḇ, lit. 'ninth of Av') is an annual ta'anit (fast day) in Rabbinic Judaism. (Karaite Judaism fasts on the 7th and 10th of Av.) It is a commemoration of 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.