Date & Time Tools
Sunrise Sunset Calculator
Calculate sunrise, sunset, solar noon, day length, civil, nautical, and astronomical twilight, and golden and blue hour for any location and date.
Location and date
Positive for north, negative for south. Range -90 to 90.
Positive for east, negative for west. Range -180 to 180.
Event times are rendered in this zone. UTC is always available.
Sunrise
09:25:01
Sun, Jun 21, 2026 (UTC)
Solar noon
16:57:44
Sun, Jun 21, 2026 (UTC)
Sunset
00:30:45
Mon, Jun 22, 2026 (UTC)
Day length
15 h 5 min 45 s
Sun declination
23.44 deg
Angle of the sun north or south of the celestial equator on this date.
Equation of time
-1.72 min
Difference between apparent solar time and mean solar time.
Full timeline
Times are ordered chronologically through the day at the selected location and time zone.
Astronomical dawn
Sky first shows the very faintest glow against true night. Sun is 18 degrees below the horizon.
07:18:30
Nautical dawn
Horizon becomes distinguishable at sea. Sun is 12 degrees below the horizon.
08:08:55
Civil dawn
Outdoor objects clearly visible without artificial light. Sun is 6 degrees below the horizon.
08:51:35
Sunrise
Top edge of the solar disc crosses the horizon, accounting for atmospheric refraction.
09:25:01
Morning golden hour ends
Sun reaches +6 degrees elevation. The warm, low-angle light fades into ordinary daylight.
10:06:20
Solar noon
Sun crosses the local meridian at its highest point for the day.
16:57:44
Evening golden hour starts
Sun drops back to +6 degrees elevation. Warm, soft, directional light begins.
23:49:26
Sunset
Top edge of the solar disc dips below the horizon, accounting for atmospheric refraction.
00:30:45
Civil dusk
End of civil twilight. Streetlights typically come on. Sun is 6 degrees below the horizon.
01:04:11
Nautical dusk
Horizon at sea no longer distinguishable. Sun is 12 degrees below the horizon.
01:46:51
Astronomical dusk
End of astronomical twilight. True night begins. Sun is 18 degrees below the horizon.
02:37:16
Twilight bands explained
Civil twilight
Sun 0 to -6 degrees
Bright enough for most outdoor activity without artificial light. Brightest planets and stars become visible at the lower edge.
Nautical twilight
Sun -6 to -12 degrees
Horizon at sea is distinguishable from the sky, traditionally used for celestial navigation with the horizon as a reference.
Astronomical twilight
Sun -12 to -18 degrees
Sky still subtly affected by the sun. End of astronomical twilight marks the start of true astronomical night and deep-sky observation.
Golden hour
Sun -4 to +6 degrees
Warm, soft, low-angle sunlight prized in photography. The most popular window for portrait, landscape, and travel photos.
Blue hour
Sun -4 to -6 degrees
Sky takes on a rich, even blue cast after sunset or before sunrise. Used for cityscape and architectural photography with lit windows.
Solar noon
Sun on the meridian
Moment the sun crosses the local meridian and reaches its highest elevation of the day. Differs from clock noon by the equation of time and longitude.
City presets
Pick a city to load its coordinates and IANA time zone in one click. Date is unchanged.
How the math works
- The Julian day for the requested calendar date is computed using the standard Meeus algorithm.
- The sun's declination, equation of time, and apparent longitude are derived from Julian centuries since J2000.0 using the NOAA solar position summary.
- Sunrise and sunset are solved from the spherical-triangle hour angle equation for the sun at -0.833 degrees, which accounts for both the solar radius and atmospheric refraction at the horizon.
- Civil, nautical, and astronomical twilight use the same hour angle equation at -6, -12, and -18 degrees respectively. Golden hour uses -4 to +6 degrees, blue hour -4 to -6.
- Accuracy is about +/-1 minute between the years 1800 and 2200 at all latitudes inside the polar circles. Near the poles the tool reports polar day or polar night honestly instead of returning a spurious time.
Tips and caveats
- Use a decimal latitude and longitude. Degrees, minutes, and seconds are not parsed; convert beforehand if needed.
- The reported times assume sea-level observation. Altitude changes of a few hundred metres shift the times by under a minute.
- Atmospheric pressure and temperature affect refraction at the horizon. The tool uses the standard NOAA refraction value of 34 arc-minutes; real conditions can vary by a couple of minutes on the horizon.
- Inside the polar circles a single calendar date can have no sunrise (polar night), no sunset (polar day), or both. The tool labels these cases instead of returning an arbitrary time.
- Coordinates and date stay on your device. There is no network request and no automatic geolocation prompt.
How to use
- Enter a decimal latitude and longitude, or click a city preset to load coordinates and the matching IANA time zone in one step.
- Pick a calendar date with the date picker. Use the Prev day, Today, and Next day shortcuts to scrub through nearby dates.
- Choose the IANA time zone you want the results rendered in. Your browser's detected zone and UTC are always included.
- Toggle 24-hour or 12-hour clock display. Sunrise, solar noon, and sunset appear in the hero cards with full date and zone context.
- Scroll down for the full chronological timeline of dawn, dusk, golden hour, and blue hour, then click Copy report to grab a clean one-screen summary.
About this tool
Sunrise Sunset Calculator computes the local times of sunrise, sunset, solar noon, day length, and every standard twilight band for any latitude, longitude, and calendar date between the years 1800 and 2200. The math implements the NOAA Solar Position Algorithm summary, a condensation of Jean Meeus's Astronomical Algorithms, and is accurate to about one minute at all latitudes inside the Arctic and Antarctic circles. Enter coordinates by hand or load one of twenty city presets, pick a date, and choose an IANA time zone for the rendered output (the browser's detected zone and UTC are always available). The result page leads with hero cards for sunrise, solar noon, and sunset, then breaks out day length in hours and minutes, the sun's declination on that date, and the equation of time in minutes. A full chronological timeline lists astronomical dawn, nautical dawn, civil dawn, sunrise, the end of morning golden hour, solar noon, the start of evening golden hour, sunset, civil dusk, nautical dusk, and astronomical dusk, each with a one-line explanation of what the band means in practice. Twilight uses the standard elevation thresholds of -6, -12, and -18 degrees; golden hour spans -4 to +6 degrees of sun elevation, and blue hour spans -4 to -6 degrees. Inside the polar circles, where the sun may not cross a given threshold on the requested date, the tool reports polar day or polar night honestly instead of returning a misleading time. A copyable report summarises every event for use in a photography plan, an outdoor itinerary, or a maritime log. Coordinates, date, and time zone are processed entirely in your browser. There is no geolocation prompt and no request leaves your device.
Free to use. Works in your browser. No signup, no login.
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