Planetary Periods

Sidereal Periods: Around the Stars
The time it takes for each planet and the Moon to make one full circle around the heavens, returning to the same place among the fixed stars.

Synodic Periods: Phase with the Sun
The time it takes each planet and the Moon to return to the same phase relationship with the Sun from our perspective here on Earth.

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Pluto- 248 years

Neptune- 165 years

Uranus- 84 years

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Saturn- 29.5 years

Jupiter- 11.86 years (~12 years)

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Mars- 687 days (~23 moonths)

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Venus- 225 days (~7.5 moonths)

Mercury- 88 days (~3 moonths)

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Moon- 27.3 days (< 1 moonth)

Moon travels around the stars once,

e.g. beginning near the Pleides and returning again to the Pleides.

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Pluto- 366.7 days (1 year + 1 day)

Neptune- 367.5 days (1 year + 2 days)

Uranus- 369.66 days (1 year + 4 days)

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Saturn- 378.1 days (1 year + 13 days)

Jupiter- 398.9 days (1 year + 1 moonth)

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Mars- 779.9 days (~26.5 moonths)

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Venus- 583.9 days (~20 moonths)

Mercury – 116 days (~ 4 moonths)

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Moon – 29.5 days (= 1 moonth)

Moon completes one full lunation,

e.g. from one New Moon (solar conjunction) to the next New Moon (solar conjunction).