Why is Tisha B'Av Av 9 Significant?

1.The twelve spies sent by Moses to observe the land of Canaan returned from their mission. Only two of the spies, Joshua and Caleb, brought a positive report, while the others spoke disparagingly about the land. The majority report caused the Children of Israel to cry, panic and despair of ever entering the "Promised Land". For this, they were punished by God that their generation would not enter the land. Because of the Israelites' lack of faith, God decreed that for all generations this date would become one of crying and misfortune for their descendants. (See Numbers Ch. 13–14)

2.The First Temple built by King Solomon and the Kingdom of Judah was destroyed by the Babylonians led by Nebuchadnezzar in 586 BCE (3175 AM) after the siege in 587 and the Judaeans were sent into the Babylonian exile.

3.The Second Temple built by Ezra and Nehemiah was destroyed by the Romans in August 70 CE (3830 AM), scattering the people of Judea and commencing the Jewish exile from the Holy Land. According to the Talmud in tractate Ta'anit, the destruction of the Second Temple began on the Ninth of Av and the Temple continued to burn throughout the Tenth of Av.

4.The First Crusade officially commenced on August 15, 1096 (Av 9, 4856 AM), killing 10,000 Jews in its first month and destroying Jewish communities in France and the Rhineland. A grand total of 1.2 million Jews were killed by this crusade that started on the 9th of Av.

5.The Jews were expelled from England on July 25, 1290 (Av 9, 5050 AM).

6. The Jews were expelled from France on July 21, 1306 (Av 9, 5066 AM).

7. The Jews were expelled from Spain on July 31, 1492 (Av 8-9, 5252 AM).

8. On August 2, 1941, (Av 9, 5701 AM) SS commander Heinrich Himmler formally received approval from the Nazi Party for "The Final Solution". Almost 50% of the Jews on the face of the earth were captured and killed at that time.

9. July 16, 1994 Av 9 when Comet Shoemaker broke into 21 parts identifying the 21 years to follow of three Shmita years from 1994: 2001, 2008, 2015.

http://en.wikipedia.org/wiki/Tisha_B'Av

https://www.youtube.com/watch?v=71CGGfBj5I0

http://en.wikipedia.org/wiki/Comet_S...E2%80%93Levy_9 21 fragments hit Jupiter 1994 Av 9

http://biblocality.com/forums/showth...highlight=djia DJIA hit 2001 and 2008 with largest point drops on Elul 29.

Historical Events in Jewish Life that occurred on the 9th of AV

1200 BCE – The Children of Israel were told on the 9th of AV by God in the wilderness that their generation would not enter the land of promise by their refusal to join Caleb and Joshua and enter the Promised Land in faith of their G-d whom they met at Sinai.
586 BCE - The Babylonian army destroyed the Temple of Solomon on the 9th of AV.
70 CE - Titus and the Roman army destroyed the Temple of Herod on the 9th of AV.
135 CE - "Bethar" the stronghold of Bar Kochba, fell ending the last trial for Jewish Independence on the 9th of AV.
136 CE - Rome began to erect the pagan city on site of the Temple dedication on the 9th of AV.
1096 CE - The First Roman Christian Crusade began on the 9th of AV.
1290 CE - The Jews were expelled from England on the 9th of AV.
1306 CE - The Jews were expelled from France on the 9th of AV.
1492 CE – The Jews were expelled from Spain by the signed order of King Ferdinand and Queen Isabella. On July, on the 9th of AV, all Jews had to be out of Spain. Columbus, according to renewed historical data, a Genoese Jewish marine captain, sailed from Spain after worshipping the Shabbat on his last day in Spain before heading to America on the 9th of AV.
1648 CE - Chmelnicky massacred tens of thousands of Polish Jews on the 9th of AV.
1914 CE – The Declaration for World World I began.
1942 CE - Plans for the annihilation of Jews began with the deportation of the Jews from the Ghetto of Warsaw on the 9th of AV.
1994 CE, July 16 - The twenty-one pieces of Shoemaker-Levi comet began its bombardment on the planet Jupiter on the 9th of AV. It was fasting day in the fourth month, the 17th day of Tammuz, that the twenty one days of mourning began leading up to that day of infamy on the 9th of AV.
2006 CE –The Vatican sponsored Rome Peace Conference put the finishing touches on the Peace Accord that successfully implanted the international forces of NATO into Lebanon and the northern borders of Israel on the 9th of AV.

Source: http://destination-yisrael.biblesear...sh-temple.html