mckeeman@wivax.UUCP (05/02/84)
Can someone give me a pointer to a simple formula for sunrise(Lat, Long) and sunset(Lat,Long)? I don't need great accuracy. I have been using sr = 6.0 + 1.5*sin(date-Sept21) + (Long-75)/15 for latitute 40. A small improvement will help.