Tisha B’AV which means the 9th of Av as per the Hebrew calendar started last night, July 25, at sundown and ends at nightfall today.
It commemorates numerous disasters that befell the Jewish people, which in a rather strange coincidence all have happened on the 9th of Av. They include the destruction of the First Temple which occurred at 587 BCE, the destruction of the Second Temple which occurred in the Year 70; the expulsion of the Jews from England in 1290 and the formal approval of the Nazi Final Solution in 1941.
Observance of this day by the devout include a 25-hour fast and the singing of lamentations and dirges.
Hat tip Tom Conigliaro
Tisha B’AV 5775