[shhrubbery!]

Aha. Didn't see your post before I posted mine. I heard it too. Don't have time at the moment to do the calculations myself though.

[handy]

Aha. Didn't see your post before I posted mine. I heard it too. Don't have time at the moment to do the calculations myself though.

In excel dates are converted to serial number. The serial number for 9-11-01 is 37145, and the serial number for 3-11-04 is 38057. The difference between to two is 912. This means 3-11 is the 912th day after 9-11-01 (remember 2004 is a leap year). So if you do not count 9-11-2001 OR 3-11-04 then there would be 911 days between the two dates.