// Test program to calculate sunrise, sunset, and various twilights. use sun.frink out = ### hh:mm:ss a z ### lat = 39.58560 degrees North long = 104.89598 degrees West println["Sunrise: " + (sunrise[now[], lat, long] -> out)] println["Sunset: " + (sunset[now[], lat, long] -> out)] println["\nCivil twilight begins: " + (civilTwilightBegin[now[], lat, long] -> out)] println["Civil twilight ends: " + (civilTwilightEnd[now[], lat, long] -> out)] println["\nNautical twilight begins: " + (nauticalTwilightBegin[now[], lat, long] -> out)] println["Nautical twilight ends: " + (nauticalTwilightEnd[now[], lat, long] -> out)] println["\nAstronomical twilight begins: " + (astronomicalTwilightBegin[now[], lat, long] -> out)] println["Astronomical twilight ends: " + (astronomicalTwilightEnd[now[], lat, long] -> out)]