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sidereal time
(redirected from Sidereal clock)

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sidereal time

In astronomy, time measured by the rotation of the Earth with respect to the stars. A sidereal day is the time taken by the Earth to turn once with respect to the stars, namely 23 hours 56 minutes 4 seconds. It is divided into sidereal hours, minutes, and seconds, each of which is proportionally shorter than the corresponding SI unit.
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One of the exhibits is a 1771 sidereal clock which Catherine the Great of Russia decided not to buy after having it on approval at St Petersburg.
A guide to your future in a visit to the past; DaysOut: GRAHAM YOUNG ... by Birmingham Mail (England)
 
 
 
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