Although the Sun appears to "rise" from the horizon, it is actually the Earth's motion that causes the Sun to appear. The illusion of a moving Sun results from Earth observers being in a rotating reference frame; this apparent motion caused many cultures to have mythologies and religions built around the geocentric model, which prevailed until astronomer Nicolaus Copernicus formulated his heliocentric model in the 16th century. [2] For a given latitude and a given date, calculate the declination of the Sun using 0 ∘ {\displaystyle 0

All times are local time for Sydney. Time is adjusted for DST when applicable. They take into account refraction. Dates are based on the Gregorian calendar. Today is highlighted. All times are local time for Cairo. They take into account refraction. Dates are based on the Gregorian calendar. Today is highlighted. Indexes: Index quotes may be real-time or delayed as per exchange requirements; refer to time stamps for information on any delays. Source: FactSet Twilight, the period in the morning during which the sky is brightening, but the Sun is not yet visible. The beginning of morning twilight is called astronomical dawn. See also: Daytime length variations with latitude and seasons Time of sunrise in 2008 for Libreville, Gabon. Near the equator, the variation of the time of sunrise is mainly governed by the variation of the equation of time. See here for the sunrise chart of a different locationAlso, unlike most other solar measurements, sunrise occurs when the Sun's upper limb, rather than its center, appears to cross the horizon. The apparent radius of the Sun at the horizon is 16 arcminutes. [1] Accounting for atmospheric refraction and measuring from the leading edge slightly increases the average duration of day relative to night. The sunrise equation, however, which is used to derive the time of sunrise and sunset, uses the Sun's physical center for calculation, neglecting atmospheric refraction and the non-zero angle subtended by the solar disc. Commodities & Futures: Futures prices are delayed at least 10 minutes as per exchange requirements. Change value during the period between open outcry settle and the commencement of the next day's trading is calculated as the difference between the last trade and the prior day's settle. Change value during other periods is calculated as the difference between the last trade and the most recent settle. Source: FactSet Cryptocurrencies: Cryptocurrency quotes are updated in real-time. Sources: CoinDesk (Bitcoin), Kraken (all other cryptocurrencies)

Sunrise (or sunup) is the moment when the upper rim of the Sun appears on the horizon in the morning. [1] The term can also refer to the entire process of the solar disk crossing the horizon. All times are local time for Melbourne. Time is adjusted for DST when applicable. They take into account refraction. Dates are based on the Gregorian calendar. Today is highlighted. All times are local time for London. They take into account refraction. Dates are based on the Gregorian calendar. Today is highlighted. See also: Sun path and Solar azimuth angle Timelapse video of twilight and sunrise in Gjøvik, Norway in February 2021 The stage of sunrise known as false sunrise actually occurs before the Sun truly reaches the horizon because Earth's atmosphere refracts the Sun's image. At the horizon, the average amount of refraction is 34 arcminutes, though this amount varies based on atmospheric conditions. [1]The period after the Sun rises during which striking colors and atmospheric effects are still seen. [3] Civil twilight being the brightest, while Astrominical twilight being the darkest.

Measurement [ edit ] Angle with respect to horizon [ edit ] This diagram of the Sun at sunrise (or sunset) shows the effects of atmospheric refraction All times are local time for Lisbon. They take into account refraction. Dates are based on the Gregorian calendar. Today is highlighted. In late winter and spring, sunrise as seen from temperate latitudes occurs earlier each day, reaching its earliest time near the summer solstice; although the exact date varies by latitude. After this point, the time of sunrise gets later each day, reaching its latest sometime around the winter solstice. The offset between the dates of the solstice and the earliest or latest sunrise time is caused by the eccentricity of Earth's orbit and the tilt of its axis, and is described by the analemma, which can be used to predict the dates. The timing of sunrise varies throughout the year and is also affected by the viewer's latitude and longitude, altitude, and time zone. These changes are driven by the axial tilt of Earth, daily rotation of the Earth, the planet's movement in its annual elliptical orbit around the Sun, and the Earth and Moon's paired revolutions around each other. The analemma can be used to make approximate predictions of the time of sunrise.All times are local time for Manchester. They take into account refraction. Dates are based on the Gregorian calendar. Today is highlighted.