Metonic cycle; enneadecaeteris

Metonic cycle; enneadecaeteris is time unit. Definition of 1 Metonic cycle; enneadecaeteris ≡ 6940 d. For astronomy and calendar studies, the Metonic cycle or Enneadecaeteris is a period of very close to 19 years that is nearly a common multiple of the solar year and the synodic month. ≡ 110 mo (hollow) + 125 mo (full) = 6940 d ≈ 19 a = 599.616 Ms. Compared to second, Metonic cycle; enneadecaeteris is bigger unit.

• 1 Metonic cycle; enneadecaeteris = (exactly) `599616000` [s]

• 1 [s] = (exactly) `1/(599616000)` Metonic cycle; enneadecaeteris = 1.6677340164372 × 10^-9 Metonic cycle; enneadecaeteris

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Metonic cycle; enneadecaeteris
=? 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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..to Callippic cycle
..to century
..to day
..to day (sidereal)
..to decade
..to fortnight
..to gigaseconds
..to helek (Hebrew)
..to Hipparchic cycle
..to hour
..to jiffy
..to ke (Chinese)
..to kiloseconds
..to lustre; lustrum
..to megaseconds
Metonic cycle; enneadecaeteris
..to microsecond
..to millennium
..to milliday
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..to moment
..to month (full)
..to month (Gregorian average)
..to month (hollow)
..to month (sidereal)
..to month (synodic)
..to nanoseconds
..to octaeteris
..to Planck time
..to second (metric)
..to shake
..to sigma
..to Sothic cycle
..to svedberg
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..to year (common)
..to year (Gregorian)
..to year (Julian)
..to year (leap)
..to year (mean tropical)
..to year (sidereal)

Source or more info

What are the Metonic and Callipic Cycles? , antikythera-mechanism.gr (ret.2017-09-04). http://www.antikythera-mechani...