Waxing Gibbous on

Moon phase on 17 December 2021 Friday is Waxing Gibbous, 13 days young Moon is in Gemini.

Share this page: twitter facebook google+ linkedin

Moon phase for

Lunar calendar 2021 | December 2021

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

Waxing Gibbous 97% illuminated

Waxing Gibbous is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 97% and growing larger. The 13 days young Moon is in ♊ Gemini.

Previous date | Moon Today | Next date

Moon phases for next 7 days

7 days ago | 7 days after

Moon phase and lunation details

6 days after First Quarter

Previous main lunar phase is the First Quarter before 6 days on 11 December 2021 at 01:36.

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 in ♊ Gemini

Moon is passing about ∠7° of ♊ Gemini tropical zodiac sector.

Apparent angular diameter ∠1769"

Lunar disc appears visually 9.7% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1769" and ∠1950".

Cold Moon after 1 day

Next Full Moon is the Cold Moon of December 2021 after 1 day on 19 December 2021 at 04:36.

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 271 / 1224

The Moon is 13 days young. Earth's natural satellite is moving from the first to the middle part of current synodic month. This is lunation 271 of Meeus index or 1224 from Brown series.

PreviousCurrent lunationNext

Synodic month length 29.45 days

Length of current 271 lunation is 29 days, 10 hours and 50 minutes. It is 23 minutes shorter than next lunation 272 length.

Lunation length shorter than mean

Length of current synodic month is 1 hour and 54 minutes shorter than the mean length of synodic month, but it is still 4 hours and 15 minutes longer, compared to 21st century shortest.

Lunar orbit position on

True anomaly ∠358.3°

This New Moon true anomaly is ∠358.3°. At beginning of next synodic month true anomaly will be ∠13.9°. 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 before apogee

13 days after point of perigee on 4 December 2021 at 10:01 in ♐ Sagittarius. The lunar orbit is getting wider, while the Moon is moving outward the Earth. It will keep this direction for the next day, until it get to the point of next apogee on 18 December 2021 at 02:16 in ♊ Gemini.

Previous perigeeNext apogee

Distance to Moon 405 222 km

Moon is 405 222 km (251 793 mi) away from Earth on this date. Moon moves farther next day until apogee, when Earth-Moon distance will reach 406 322 km (252 477 mi).

Moon in ascending node

Moon is in ascending node in ♊ Gemini at 00:12 on this date, it crosses the ecliptic from South to North. Moon will follow the northern part of its orbit for the next 13 days to meet descending node on 31 December 2021 at 01:07 in ♐ Sagittarius.

Previous nodeNext node

New draconic month

At 00:12 on this date the Moon is completing its previous draconic month and is entering the new one.


Moon before northern standstill

11 days after previous South standstill on 6 December 2021 at 02:25 in ♑ Capricorn, when Moon has reached southern declination of ∠-26.331°. Next 2 days the lunar orbit moves northward to face North declination of ∠26.306° in the next northern standstill on 20 December 2021 at 04:32 in ♋ Cancer.

Previous standstillNext standstill

Syzygy in 1 day

After 1 day on 19 December 2021 at 04:36 in ♊ Gemini, the Moon will be in Full Moon geocentric opposition with the Sun and this alignment forms next Sun-Earth-Moon syzygy.

Previous syzygyNext syzygy

Share this page: twitter facebook google+ linkedin
Back to: Top of page