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abstraction > mathematical concept > unit > time unit > month > nodical month
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nodical month comparison table
Subject is an instance of is a kind of has value has synonym has definition
month time unit  The period of one complete synodic or sidereal revolution of the Moon around the Earth; also a calendrical unit that approximates the period of revolution.
nodical monthmonth 27.2122 daysDraconic monthThe interval of time between two successive transits of the Moon through its ascending node.

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