Tisha B'Av (the 9th day of Av) is the Jewish day commemorating the destruction of King Solomon's Temple in 70 B.C.E This year, it falls on July 30.
The First Temple was built by King Solomon and was the most important place in ancient Judaism. It was destroyed when the Babylonians sacked
The ninth of Av also happens to be the day that Jews were expelled from
Thanks to Worshipful Master Jay Weinblatt for reminding me of this day and blog topic.