Solar events
Sunrise & Sunset Calculator
Sunrise, sunset, solar noon, and all three twilight phases (civil, nautical, astronomical) for any city worldwide. Useful for photography, astrology timing, religious observance, and outdoor planning.
Sunrise & sunset for any location
NOAA solar position algorithm — computes sunrise, sunset, solar noon, and all three twilight phases (civil, nautical, astronomical) for any location and date.