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Ephemeris time
EPHEMERIS TIME

Definition: Time measured by orbital movement of earth, moon and planets, differing from mean solar time in that it allows for irregularities due to variations in rate of rotation of the earth; an ephemeris second has the same value as had the mean universal second for the 19th century.
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NOT APPLICABLE.


See perfect time (13).

See perfect measurer.
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See perfect measuring.

See perfect method (1).

See perfect specificity.
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See perfect value of time.
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See perfect particularity (1).

See perfect characteristic (1).
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See perfect time measurement.

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