Tisha B'Av is the saddest day on the Jewish calendar because of the incredible series of tragedies which occurred on that date throughout Jewish History.
Tisha B'Av means "the ninth (day) of the Hebrew month of Av." Tisha B'Av primarily commemorates the destruction of the first and second Temples, both of which were destroyed on the ninth of Av (the first by the Babylonians in 586 B.C.E.; the second by the Romans in 70 C.E.). Although this day is primarily meant to commemorate the destruction of the Temple, it is appropriate to consider on this day the many other tragedies of the Jewish people, many of which occurred on this day, most notably the expulsion of the Jews from Spain in 1492.
This year, the fast begins Monday night, July 23, 2007 and continues till after sundown on Tuesday, July 24, 2007.
I posted on my website links to 37 educational sites that describe practices, prohibitions, insights and explanations about this sad day in Jewish history.All 37 links have been reviewed / checked this week.
May we see the rebuilding of the Temple in our days and that Tisha B'Av becomes a day of celebration.