I know August 5th was the anniversey of something and that was why he chose that date for the embassy bombings in Kenya and Tanzania. I can't remember off the top of my head what that "something" was. But the main thing is on August 5th it will be a week day AND it will already be August 6th in Japan, where the Hiroshima attack actually occurred.
One of the reasons a Friday was allegedly chosen in the 1998 bombings was that in Kenya & Tanzania, both with a high percentage of muslims, they were supposed to be at Friday prayers. That said, I think they still killed more muslims than Americans!
Bomb dropped at 8:15 A.M. Aug 6, making it 7:15 P.M. Aug. 5, EDT.
Assuming time has any importance in this.