Sunrise Sunset Calculator
Sunrise, sunset, and solar noon from latitude, longitude, and date. NOAA solar calculator with zenith 90.833 degrees. Named cities use that city's IANA offset for the date, including DST. Custom uses the minutes you type. Not a weather forecast.
Rated 4.7 out of 5 based on 402 reviews
How to calculate sunrise and sunset
- Pick a city, or leave Custom and type latitude and longitude in decimal degrees.
- Enter the civil date as YYYY-MM-DD. The default 2026-06-21 is the June solstice.
- For Custom, set the UTC offset in minutes. Named cities use that city's IANA zone for the date, including DST. New York in June is UTC-4.
- Read sunrise, sunset, solar noon, and day length. This is not weather. Nothing is uploaded.
Sunrise and sunset
NOAA solar calculator, zenith 90.833 degrees
| Zenith | 90.833 degrees (refraction and solar radius) |
|---|---|
| Algorithm | NOAA solar calculator |
| Solar noon | Sun at the meridian for that longitude |
| Offset | Named cities use IANA zones for that date. Custom uses minutes from UTC that you type. |
| Polar day | The sun may not rise or set at high latitudes |
| Weather | Not a forecast. Clouds are not modeled. |
What this sunrise page computes
The page uses the NOAA solar calculator with a zenith of 90.833 degrees. That zenith includes an average refraction and the sun's apparent radius. You get sunrise, sunset, solar noon, and day length for the date and coordinates you type.
Latitude, longitude, zenith, and offset
Latitude and longitude fix the place. A short city list sets coordinates and the IANA zone for New York, London, Tokyo, Sydney, Cairo, Sao Paulo, Nairobi, and Null Island. Custom still uses minutes from UTC that you type. Live zone clocks sit on the world clock. Moon illumination is moon phase.
How clock times are shown
The algorithm works in UTC minutes, then adds an offset. Named cities take that offset from the IANA zone on the civil date, so New York on 21 June is UTC-4 and Tokyo is UTC+9. Custom uses the default coordinates of New York and the default offset -240 minutes unless you change them.
Limits
Not weather. Hills, clouds, and official almanacs can differ by minutes. Polar night and midnight sun return a no-rise or no-set note. CZNull does not receive the coordinates. See the disclaimer.