Waxing Gibbous on

Moon phase on 30 December 2017 Saturday is Waxing Gibbous, 12 days young Moon is in Gemini.

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Moon phase for

Lunar calendar 2017 | December 2017

Waxing Gibbous phase
Waxing Gibbous phase
Image credit: NASA/Goddard Space Flight Center Scientific Visualization Studio.

Waxing Gibbous 90% illuminated

Waxing Gibbous is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 90% and growing larger. The 12 days young Moon is in ♊ Gemini.

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Moon phases for next 7 days

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Moon phase and lunation details

4 days after First Quarter

Previous main lunar phase is the First Quarter before 4 days on 26 December 2017 at 09:20.

Moonrise and moonset

Moon rises in the afternoon and sets after midnight to early morning. It is visible to the southeast in early evening and it is up for most of the night.

Moon is entering ♊ Gemini

Moon is passing first ∠2° of ♊ Gemini tropical zodiac sector.

Apparent angular diameter ∠1957"

Lunar disc appears visually 0.3% wider than solar disc. Moon and Sun apparent angular diameters are ∠1957" and ∠1951".

Wolf Moon after 2 days

Next Full Moon is the Wolf Moon of January 2018 after 2 days on 2 January 2018 at 02:24.

Upcoming main Moon phases

Moderate tide

There is medium ocean tide on this date. Sun and Moon gravitational forces are not aligned, but meet at very acute angle, so their combined tidal force is moderate.

Lunation 222 / 1175

The Moon is 12 days young. Earth's natural satellite is moving from the first to the middle part of current synodic month. This is lunation 222 of Meeus index or 1175 from Brown series.

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Synodic month length 29.82 days

The length of the lunation is 29 days, 19 hours and 47 minutes. This is the year's longest synodic month of 2017. It is 59 minutes longer than the next lunation's length. The lengths of the following synodic months are going to decreasing with the true anomaly getting closer to the value it has at the point of New Moon at perigee (∠0° or ∠360°).

Lunation length longer than mean

The length of the current synodic month is 7 hours and 3 minutes longer than the mean synodic month length and it is the longest synodic month length of 21st century.

Lunar orbit position on

True anomaly ∠173.3°

At the beginning of the lunation cycle the true anomaly is ∠173.3°. At the beginning of next synodic month the true anomaly is going to be ∠198.1°.

Moon before apogee

11 days after point of apogee on 19 December 2017 at 01:27 in ♑ Capricorn. The lunar orbit is getting narrow, while the Moon is moving towards the Earth. It will keep this direction over the next 2 days, until the Moon reaches the point of next perigee on 1 January 2018 at 21:54 in ♋ Cancer.

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Distance to Moon 366 311 km

The Moon is 366 311 km (227 615 mi) away from Earth and getting closer over the next 2 days until the point perigee when Earth-Moon distance is going to be 356 566 km (221 560 mi).

Moon before ascending node

8 days after descending node on 22 December 2017 at 10:04 in ♒ Aquarius. The Moon is located south of the ecliptic over the following 4 days, until the lunar orbit crosses from South to North in ascending node on 4 January 2018 at 07:48 in ♌ Leo.

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Draconic month

22 days since the beginning of current draconic month in ♌ Leo, the Moon is navigating from the second to the final part of the cycle.

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Moon before northern standstill

11 days since the previous standstill on 19 December 2017 at 09:31 in ♑ Capricorn when the Moon has reached South declination of ∠-20.062°, the lunar orbit is extending northward over the next 2 days to face maximum declination of ∠20.055° at the point of next northern standstill on 2 January 2018 at 00:01 in ♋ Cancer.

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Syzygy in 2 days

In 2 days on 2 January 2018 at 02:24 in ♋ Cancer the Moon is going to be in a Full Moon geocentric opposition with the Sun and thus forming the next Sun-Earth-Moon syzygy alignment.

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