Times shown in UTC. For your local time, add your timezone offset. Approximation — actual times may differ by a few minutes.
Sunrise & Sunset Calculator
+ North, − South
+ East, − West
A sunrise/sunset calculator computes the times of sunrise, sunset, solar noon, and day length for any location and date. Times vary with latitude, longitude, and time of year due to Earth's axial tilt and orbital position.
Tip: Dawn and dusk are not the same as sunrise and sunset. Civil twilight begins 6° below the horizon (still quite light); nautical twilight at 12°; astronomical twilight at 18° (true darkness). Most daylight calculators show civil twilight.
- 1Solar declination: the angle between the sun and the equatorial plane (varies −23.5° to +23.5°)
- 2Hour angle: the sun's position relative to solar noon
- 3Sunrise/sunset occur when the sun is at −0.833° (accounting for refraction and sun's radius)
- 4Algorithm based on Jean Meeus's "Astronomical Algorithms"
| Latitude | Midsummer day length | Midwinter day length |
|---|---|---|
| Equator (0°) | ~12 hours | ~12 hours |
| Madrid (40°N) | ~14.5 hours | ~9.5 hours |
| London (51°N) | ~16.5 hours | ~7.5 hours |
| Reykjavik (64°N) | ~21 hours | ~4 hours |
| Arctic Circle (66.5°N) | Midnight sun | Polar night |
Fun Fact
At the Arctic Circle (66.5°N), there is at least one day of midnight sun in summer and one day of polar night in winter. In Tromsø, Norway (69.7°N), the sun doesn't rise for about 2 months each winter.
References