Waning Gibbous on

Moon phase on 21 March 2011 Monday is Waning Gibbous, 16 days old Moon is in Libra.

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Moon phase for

Lunar calendar 2011 | March 2011

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

Waning Gibbous 95% illuminated

Waning Gibbous is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 95% and getting smaller. The 16 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

1 day after Full Moon

Previous main lunar phase is the Full Moon before 1 day on 19 March 2011 at 18:10.

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 ♎ Libra

Moon is passing about ∠25° of ♎ Libra tropical zodiac sector.

Apparent angular diameter ∠1964"

Lunar disc appears visually 1.9% wider than solar disc. Moon and Sun apparent angular diameters are ∠1964" and ∠1926".

Worm Moon before 1 day

Next Full Moon is the Pink Moon of April 2011 after 27 days on 18 April 2011 at 02:44.

Upcoming main Moon phases

  • Last Quarter in Capricorn ♑ on 26 March 2011 at 12:07
  • New Moon in Aries ♈ on 3 April 2011 at 14:32
  • First Quarter in Cancer ♋ on 11 April 2011 at 12:05
  • Full Moon in Libra ♎ on 18 April 2011 at 02:44

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 138 / 1091

The Moon is 16 days old. Earth's natural satellite is moving from the middle to the last part of current synodic month. This is lunation 138 of Meeus index or 1091 from Brown series.

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Synodic month length 29.74 days

The length of the lunation is 29 days, 17 hours and 46 minutes. It is 1 hour and 28 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 5 hours and 2 minutes longer than the mean synodic month length. It is 2 hours and 1 minute shorter compared to 21st century's longest synodic month length.

Lunar orbit position on

True anomaly ∠167°

At the beginning of the lunation cycle the true anomaly is ∠167°. At the beginning of next synodic month the true anomaly is going to be ∠190.9°.

Moon after perigee

1 day after point of perigee on 19 March 2011 at 19:09 in ♍ Virgo. The lunar orbit is getting widen, while the Moon is moving away from the Earth. It will keep this direction over the next 11 days, until the Moon reaches the point of next apogee on 2 April 2011 at 09:00 in ♓ Pisces.

Previous perigeeNext apogee

Distance to Moon 365 010 km

The Moon is 365 010 km (226 807 mi) away from Earth and getting further over the next 11 days until the point apogee when Earth-Moon distance is going to be 406 656 km (252 684 mi).

Moon before ascending node

8 days after descending node on 13 March 2011 at 11:55 in ♊ Gemini. 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 25 March 2011 at 21:09 in ♐ Sagittarius.

Previous nodeNext node

Draconic month

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

PreviousCurrent draconic monthNext

Moon before southern standstill

8 days since the previous standstill on 12 March 2011 at 17:06 in ♊ Gemini when the Moon has reached North declination of ∠23.825°, the lunar orbit is extending southward over the next 3 days to face maximum declination of ∠-23.716° at the point of next southern standstill on 25 March 2011 at 05:02 in ♐ Sagittarius.

Previous standstillNext standstill

Syzygy in 13 days

In 13 days on 3 April 2011 at 14:32 in ♈ Aries the Moon is going to be in a New Moon geocentric conjunction with the Sun and thus forming the next Sun-Moon-Earth syzygy alignment.

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