Waning Gibbous on

Moon phase on 4 December 2017 Monday is Waning Gibbous, 15 days old Moon is in Gemini.

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Moon phase for

Lunar calendar 2017 | December 2017

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

Waning Gibbous 99% illuminated

Waning Gibbous is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 99% and getting smaller. The 15 days old Moon is in ♊ Gemini.

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Moon phases for next 7 days

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Moon phase and lunation details

1 day after Full Moon

Previous main lunar phase is the Full Moon before 1 day on 3 December 2017 at 15:47.

Moonrise and moonset

Moon rises in the evening and sets in the morning. It is visible to the southwest and it is high in the sky after midnight.

Moon in ♊ Gemini

Moon is passing about ∠24° of ♊ Gemini tropical zodiac sector.

Apparent angular diameter ∠1972"

Lunar disc appears visually 1.3% wider than solar disc. Moon and Sun apparent angular diameters are ∠1972" and ∠1947".

Cold Moon before 1 day

Next Full Moon is the Wolf Moon of January 2018 after 28 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 221 / 1174

The Moon is 15 days old. Earth's natural satellite is moving from the middle to the last part of current synodic month. This is lunation 221 of Meeus index or 1174 from Brown series.

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Synodic month length 29.78 days

Length of current 221 lunation is 29 days, 18 hours and 48 minutes. It is 59 minutes shorter than next lunation 222 length.

Lunation length longer than mean

Length of current synodic month is 6 hours and 4 minutes longer than the mean length of synodic month, but it is still 59 minutes shorter, compared to 21st century longest.

Lunar orbit position on

True anomaly ∠147°

This New Moon true anomaly is ∠147°. At beginning of next synodic month true anomaly will be ∠173.3°. The length of upcoming synodic months will keep increasing since the true anomaly gets closer to the value of New Moon at point of apogee (∠180°).

Moon in perigee

Moon is reaching point of perigee on this date at 08:42, this is 12 days after last apogee on 21 November 2017 at 18:52 in ♐ Sagittarius. Lunar orbit is starting to get wider, while the Moon is moving outward the Earth for 14 days ahead, until it will get to the point of next apogee on 19 December 2017 at 01:27 in ♑ Capricorn.

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Distance to Moon 357 496 km

This perigee Moon is 357 496 km (222 138 mi) away from Earth. It is 5 012 km closer than the mean perigee distance, but it is still 12 860 km farther than the closest perigee of 21st century.

Moon before ascending node

9 days after its descending node on 25 November 2017 at 08:22 in ♒ Aquarius, the Moon is following the southern part of its orbit for the next 3 days, until it will cross the ecliptic from South to North in ascending node on 8 December 2017 at 00:39 in ♌ Leo.

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Draconic month

23 days after beginning of current draconic month in ♌ Leo, the Moon is moving from the second to the final part of it.

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Moon before northern standstill

12 days after previous South standstill on 22 November 2017 at 02:06 in ♑ Capricorn, when Moon has reached southern declination of ∠-19.959°. Next day the lunar orbit moves northward to face North declination of ∠20.015° in the next northern standstill on 5 December 2017 at 11:43 in ♋ Cancer.

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Syzygy in 13 days

After 13 days on 18 December 2017 at 06:31 in ♐ Sagittarius, the Moon will be in New Moon geocentric conjunction with the Sun and this alignment forms next Sun-Moon-Earth syzygy.

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