Day (sidereal)

Day (sidereal) is time unit, symbol: [d (sidereal)]. Definition of 1 day (sidereal) ≈ 23 h, 56 min, 4.0916 sec. A sidereal day is the time needed for the Earth to rotate once around its axis so that the distant stars appear in the same position in the sky. This is ~4 minutes shorter than the solar day.. Compared to second, day (sidereal) is bigger unit.

• 1 [d (sidereal)] = `86164.09053083288` [s]

• 1 [s] = `1/(86164.09053083288)` [d (sidereal)] = 1.1605762839708 × 10-5 [d (sidereal)]


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Multiply convert of day (sidereal) to common time units:

[d (sidereal)]
=? nanoseconds
=? microsecond
=? millisecond
=? second
=? kiloseconds
=? century
=? day
=? decade
=? hour
=? minute
=? month (full)
=? month (Gregorian average)
=? week
=? year (common)
=? year (Gregorian)
=? blink

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Source or more info

from k given in Aoki et al, 1982, "The New definition of Universal Time", Astron. Astrophys., 105, 359-361 (1982). http://hpiers.obspm.fr/eop-pc/...

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