Waning Gibbous on

Moon phase on 20 February 2011 Sunday is Waning Gibbous, 17 days old Moon is in Libra.

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Moon phase for

Lunar calendar 2011 | February 2011

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

Waning Gibbous 93% illuminated

Waning Gibbous is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 93% and getting smaller. The 17 days old Moon is in ♎ Libra.

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Moon phases for next 7 days

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Moon phase and lunation details

2 days after Full Moon

Previous main lunar phase is the Full Moon before 2 days on 18 February 2011 at 08:36.

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 is entering ♎ Libra

Moon is passing first ∠2° of ♎ Libra tropical zodiac sector.

Apparent angular diameter ∠1973"

Lunar disc appears visually 1.7% wider than solar disc. Moon and Sun apparent angular diameters are ∠1973" and ∠1940".

Snow Moon before 2 days

Next Full Moon is the Worm Moon of March 2011 after 27 days on 19 March 2011 at 18:10.

Upcoming main Moon phases

Neap tide

There is low ocean tide on this date. Sun and Moon gravitational forces are not aligned, but meet at big angle, so their combined tidal force is weak.

Lunation 137 / 1090

The Moon is 17 days old. Earth's natural satellite is moving from the middle to the last part of current synodic month. This is lunation 137 of Meeus index or 1090 from Brown series.

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Synodic month length 29.76 days

Length of current 137 lunation is 29 days, 18 hours and 15 minutes. This is the year's longest synodic month of 2011. It is 29 minutes longer than next lunation 138 length.

Lunation length longer than mean

Length of current synodic month is 5 hours and 31 minutes longer than the mean length of synodic month, but it is still 1 hour and 32 minutes shorter, compared to 21st century longest.

Lunar orbit position on

True anomaly ∠139.2°

This New Moon true anomaly is ∠139.2°. At beginning of next synodic month true anomaly will be ∠167°. 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 after perigee

1 day after point of perigee on 19 February 2011 at 07:27 in ♍ Virgo. The lunar orbit is getting wider, while the Moon is moving outward the Earth. It will keep this direction for the next 13 days, until it get to the point of next apogee on 6 March 2011 at 07:50 in ♈ Aries.

Previous perigeeNext apogee

Distance to Moon 363 353 km

Moon is 363 353 km (225 777 mi) away from Earth on this date. Moon moves farther next 13 days until apogee, when Earth-Moon distance will reach 406 584 km (252 640 mi).

Moon after descending node

6 days after its descending node on 14 February 2011 at 08:14 in ♋ Cancer, the Moon is following the southern part of its orbit for the next 6 days, until it will cross the ecliptic from South to North in ascending node on 26 February 2011 at 20:19 in ♐ Sagittarius.

Previous nodeNext node

Draconic month

20 days after beginning of current draconic month in ♐ Sagittarius, the Moon is moving from the second to the final part of it.

PreviousCurrent draconic monthNext

Moon before southern standstill

7 days after previous North standstill on 13 February 2011 at 09:00 in ♊ Gemini, when Moon has reached northern declination of ∠24.080°. Next 5 days the lunar orbit moves southward to face South declination of ∠-23.985° in the next southern standstill on 25 February 2011 at 22:13 in ♐ Sagittarius.

Previous standstillNext standstill

Syzygy in 12 days

After 12 days on 4 March 2011 at 20:46 in ♓ Pisces, 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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