What is solar day?

Some articles on solar, day, solar day, days:

Sidereal Time and Solar Time
... Solar time is measured by the apparent diurnal motion of the sun, and local noon in solar time is the moment when the sun is at its highest point in the sky (exactly due south or north depending on the ... The Earth makes a rotation around its axis in a sidereal day during that time it moves a short distance (about 1°) along its orbit around the sun ... So after a sidereal day has passed the Earth still needs to rotate a bit more before the sun reaches its highest point ...
Earth's Rotation - Rotation Period - Angular Speed
... ×10−5 radians per SI second (mean solar second) ... Multiplying by (180°/π radians)×(86,400 seconds/mean solar day) yields 360.9856°/mean solar day, indicating that Earth rotates more than 360° relative ... by multiplying by the number of sidereal days in one mean solar day, 1.002 350. 795, which yields the equatorial speed in mean solar hours given above of 1,674.4 km/h ...
Coordinated Universal Time - Rationale
... to tidal deceleration, causing the mean solar day to increase in length ... ephemeris time and can now be seen to have a relationship with the mean solar day observed between 1750 and 1892, analysed by Simon Newcomb ... As a result, the SI second is close to 1/86,400 of a mean solar day in the mid‑19th century ...
Earth's Rotation - Rotation Period - Stellar and Sidereal Day
... Earth's rotation period relative to the fixed stars, called its stellar day by the International Earth Rotation and Reference Systems Service (IERS), is 86,164.098 691 ... seconds of ... period relative to the precessing or moving mean vernal equinox, misnamed its sidereal day, is 86,164.090 88 ... seconds of mean solar time (UT1) (23 56 4.090 ... Thus the sidereal day is shorter than the stellar day by about 8.4 ms ...
Unit Of Time
... or generations (saecula, aion), subdivisions of the solar day in hours ... The Sothic cycle was a period of 1,461 years of 365 days in the Ancient Egyptian calendar ... China, the kè (刻) was a unit of decimal time, dividing a day into 100 equal intervals of 14.4 minutes ...

Famous quotes containing the words day and/or solar:

    I look upon every day to be lost, in which I do not make a new acquaintance.
    Samuel Johnson (1709–1784)

    Senta: These boats, sir, what are they for?
    Hamar: They are solar boats for Pharaoh to use after his death. They’re the means by which Pharaoh will journey across the skies with the sun, with the god Horus. Each day they will sail from east to west, and each night Pharaoh will return to the east by the river which runs underneath the earth.
    William Faulkner (1897–1962)