Sunrise / Sunset

About this tool

Sunrise / Sunset calculates sunrise, sunset, twilight, golden hour, and blue hour for a searched place or your location, on any date from 1900 through 2100. It charts daylight, draws shadows from the sun’s altitude, plots the analemma, counts down a hunting offset you set, and shows Open-Meteo wind with a scent cone when that date is inside the forecast.

Look up sunrise, sunset, twilight, golden hour, and blue hour for a place and any date from 1900 through 2100. The page also charts daylight, draws a shadow bench, plots the analemma, counts down a hunting offset, and shows forecast wind with a scent cone.

How to use it

1. Choose a place. Type a city and pick a suggestion, or allow the browser location prompt. The place’s IANA timezone comes from Open-Meteo so the clocks match that location, including daylight saving.
2. Pick a date. The selected day can be today, a future day, or a past day from 1900 through 2100. Sunrise, sunset, and the twilight bands are calculated in the browser.
3. Read the windows. The page lists civil, nautical, and astronomical twilight, blue hour, and golden hour, and compares that day’s length with yesterday and the June and December solstices.
4. Wind, when the forecast has it. For a date inside the Open-Meteo forecast, hourly wind speed and gusts are shown in knots. The cone points downwind from the stand.

What you can do

• Any date — Sun times are calculated in the browser from the place’s coordinates and timezone, including past and future days.
• Light and shadow — Twilight bands, golden hour, blue hour, a year of daylight, and a bench that casts shadows from the sun’s altitude.
• Hunting clock and wind — Set minutes before sunrise and after sunset. Hourly wind, in knots, draws a cone for where scent travels when that day is inside the forecast.

What a loaded place shows

A place and date show sunrise and sunset in that timezone, countdowns to the next sunrise and sunset, twilight and golden-hour windows, daylight compared with the solstices, a shadow length for a pole, the analemma, and wind when the date is inside the forecast.

Sources

• NOAA solar calculator equations — Sunrise, sunset, solar position, the equation of time, and declination use the NOAA general solar position equations in the browser.
• Open-Meteo geocoding — Place search uses the Open-Meteo geocoding API, including the timezone field.
• Open-Meteo forecast — Hourly wind speed, gusts, and direction are requested in knots from the Open-Meteo forecast API and proxied by this site.

Limits

• These are calculated sun times, not an official almanac. Expect them to be within a couple of minutes of a published table.
• The hunting clock is only an offset from sunrise and sunset. It is not a hunting regulation.
• Wind is available only inside the Open-Meteo forecast window. The scent cone is a qualitative sketch, about 35° wide, and it is not a dispersion model.
• Coordinates are sent to name the place and to load wind. The sun times themselves are calculated in the browser.

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Frequently asked questions