day Comparison Table

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day comparison table

Subject has value has definition

mean solar day 24^h00^m00^s The mean length of time between two successive culminations of the Sun (i.e., the mean period from apparent noon to apparent noon).

sidereal day 23^h56^m4^s.091 The length of time between two successive meridian transits of the vernal equinox (cf. mean solar day). Because of precession the sidereal day is about 0.0084 second shorter than the period of rotation of Earth relative to a fixed direction (23^h56^m4^s.099).

Subject	has value	has definition
mean solar day	24^h00^m00^s	The mean length of time between two successive culminations of the Sun (i.e., the mean period from apparent noon to apparent noon).
sidereal day	23^h56^m4^s.091	The length of time between two successive meridian transits of the vernal equinox (cf. mean solar day). Because of precession the sidereal day is about 0.0084 second shorter than the period of rotation of Earth relative to a fixed direction (23^h56^m4^s.099).

Next non SI unit: degree (angle) Up: non SI unit, time unit Previous non SI unit: bel