Michael 182 wrote:
Are you carrying passengers? If not (assuming I remember the FARs
correctly)
you can fly anytime you want as a private pilot. Also, I believe "night",
as
defined by the FARs, uses civil twilight data.

http://aa.usno.navy.mil/data/docs/RS_OneDay.html

The FAR has three definitions related to night:

1. Sunrise/sunset - lights (91.209)
2. Civil twilight - logging night time (1.1)
3. One hour before sunrise, one hour after sunset - carrying passengers
(61.57)

So, you can take off at sunset, land just less than an hour later, and log
0.5 day (usually), 0.4 night (usually) and no landing for 'passenger'
currency.

Hilton
P.S.: WingX for the Pocket PC will calculate these times for you for any
airport in the US (local and zulu) - http://www.hiltonsoftware.com