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View synonyms for
sidereal day
noun
Astronomy.
- the interval between two successive passages of the vernal equinox over the meridian, being about four minutes shorter than a mean solar day.
sidereal day
noun
- See day
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51Թ History and Origins
Origin of sidereal day1
First recorded in 1785–95
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How does sidereal day compare to similar and commonly confused words? Explore the most common comparisons:
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Example Sentences
Examples have not been reviewed.
Note: For simplicity’s sake, these are all sidereal days, and “day” refers to an Earth day.
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This figure is known as the "sidereal day" or "stellar day".
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A diurnal variation of the results would appear as a peak in the lock-in spectrum at a period of the sidereal day, which is 86,164.1 s.
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A sidereal day is approximately 23 hours, 56 minutes and 4.1 seconds.
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A deduction of the number of the years from the number of the sidereal days gave, as remainder, the number of civil days in the exeligmos.
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