When does fall begin 2008?

Answer 1

September 23 at 12:55 am Eastern Daylight Time, which makes it September 22 for the rest of the US: 11:55 pm Central Daylight time; 10:55 pm Mountain daylight time and 09:55 Pacific daylight time.

The odd time is due to the fact that Fall begin when the sub-point of the sun crosses the equator. That mean the sun is directly over the equator heading south when Fall officially begins.