Thread: Night , Complete Sun and Moon Data Calculator
View Single Post
  #1  
Old September 22nd 06, 03:05 PM posted to rec.aviation.piloting
Clay
external usenet poster
  
Posts: 25
Default Night , Complete Sun and Moon Data Calculator
There is a calculator that can help you determine when civil twilight
is based on the date and your location.

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