Sunrise, sunset, solar noon, day length, twilights, golden hour and blue hour for any date, in about 200 cities or your own coordinates.
On 21 June 2026 the Sun rises in London at about 04:43 and sets at about 21:21 British Summer Time, which is 16 hours 39 minutes of daylight, and on 21 December it rises at 08:03 and sets at 15:53, only 7 hours 50 minutes. The page uses the equations published by the NOAA Global Monitoring Laboratory. From the date it finds the equation of time and the Sun's declination, then the hour angle at which the Sun is 0.833 degrees below the horizon, which allows for atmospheric refraction and the Sun's radius. Sunrise is solar noon minus that hour angle, and sunset is solar noon plus it, using your longitude. Each time is solved three times, so the Sun's position is right at the event and not at noon. Times are shown in the place's own time zone, with daylight saving applied for the date you choose.
Twilight has standard definitions based on how far the Sun is below the horizon: civil twilight ends at 6 degrees, nautical at 12 and astronomical at 18. At the end of astronomical twilight the sky is fully dark. Golden hour and blue hour have no official definition. The page uses the usual photographer's convention: golden hour is the Sun between 4 degrees below and 6 degrees above the horizon, and blue hour is the Sun between 8 and 4 degrees below it. Other sites use different angles, so their golden hour can start a few minutes earlier or later.
Near and beyond the polar circles the Sun can stay up or down for the whole day. At Tromso on 21 June 2026 the Sun does not set, and on 21 December it does not rise, but civil twilight still runs from about 09:31 to 13:53. The page says so instead of showing a time, and a dash in the table means the Sun does not cross that angle on that date. The method was checked against the US Naval Observatory's rise and set service for London, New York, Sydney and Mumbai on four dates in 2026, and sunrise, sunset, solar noon and civil twilight agree within 2 minutes. Expect larger differences near the poles.
The times are for sea level, a flat horizon and standard refraction. Hills, buildings, altitude above sea level, haze and unusual weather change when you actually see the Sun, so use the times as a guide and not for navigation or for religious timekeeping. The city list gives city-centre coordinates rounded to about a kilometre. The page covers dates from 1900 to 2100 and does not calculate the Moon. For a place that is not in the list, choose the last option and type its latitude, longitude and an IANA time zone name such as Asia/Kolkata. Nothing you type is stored or sent.
On 21 June 2026 sunrise is about 04:43 and sunset about 21:21 BST, so the day is 16 hours 39 minutes long. The US Naval Observatory gives 04:43 and 21:22 for the same date. Solar noon is at about 13:02 because BST is an hour ahead of GMT.
The period after sunrise and before sunset when the Sun is low and the light is soft and warm. This page defines it as the Sun between 4 degrees below and 6 degrees above the horizon. In London on 21 June 2026 the morning one runs from about 04:14 to 05:37, and the evening one from about 20:27 to 21:50.
They mark the Sun 6, 12 and 18 degrees below the horizon. In Sydney on 21 December 2026 civil twilight ends at about 20:34, nautical at 21:10 and astronomical at 21:49, so the sky is fully dark only then. In London in June the Sun never gets 18 degrees down, so there is no astronomical night.
Above about 66.5 degrees of latitude the Sun can stay below or above the horizon all day around the solstices. At Tromso (69.65 N) the Sun does not set on 21 June 2026 and does not rise on 21 December. The page shows no sunrise and says whether it is polar day or polar night.
Solar noon is when the Sun is highest. It differs from 12:00 clock time because of your longitude within the time zone, daylight saving and the equation of time, which moves it by up to about 16 minutes through the year. In Mumbai on 25 October 2026 it falls at about 12:22.
Within about 2 minutes of the US Naval Observatory at the four city-date pairs checked. Expect a difference of a minute or two from an almanac at mid latitudes, and more near the polar circles. Hills, elevation and weather affect what you see.