I have just noticed that 1000000000, using Unix timestamp is Sep 9 01:46:40 2001 GMT. Just two days before 9/11.
Got another one for you:
1111111111 = 03 / 17 / 2005
Just two days before:
"March 19 A time bomb explodes in a Muslim shrine in Quetta, southwestern Pakistan, killing at least 29 people and wounding 40"
1111111111 is binary for 1023.
10:23: The Associated Press reports a car bomb has exploded outside the State Department in Washington, D.C. This and several other reports of terrorist acts in the capital are quickly found to be false.
Keyword in bold.