Astronomical unit
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What links here
Terrestrial Time
International Atomic Time
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Sidereal time
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Celestial sphere
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Time standard
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Universal Time
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Julian day
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1972
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1908
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Year
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Time
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Revised Julian calendar
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Right ascension
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Full moon
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Ephemeris time
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Ecliptic
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ΔT (timekeeping)
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Declination
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Terrestrial time
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Terrestrial Dynamical Time
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