First Quarter on

Moon phase on 11 May 2011 Wednesday is First Quarter, 8 days young Moon is in Leo.

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Moon phase for

Lunar calendar 2011 | May 2011

First Quarter phase
First Quarter phase
Image credit: NASA/Goddard Space Flight Center Scientific Visualization Studio.

First Quarter 57% illuminated

First Quarter is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 57% and growing larger. The 8 days young Moon is in ♌ Leo.

* The exact date and time of this First Quarter phase is on 10 May 2011 at 20:33 UTC.

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Moon phases for next 7 days

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Moon phase and lunation details

Moonrise and moonset

Moon rises at noon and sets at midnight. It is visible high in the southern sky in early evening.

Moon in ♌ Leo

Moon is leaving the last ∠1° of ♌ Leo tropical zodiac sector and will enter ♍ Virgo later.

Apparent angular diameter ∠1953"

Lunar disc appears visually 2.8% wider than solar disc. Moon and Sun apparent angular diameters are ∠1953" and ∠1900".

Flower Moon after 5 days

Next Full Moon is the Flower Moon of May 2011 after 5 days on 17 May 2011 at 11:09.

Upcoming main Moon phases

  • Full Moon in Scorpio ♏ on 17 May 2011 at 11:09
  • Last Quarter in Aquarius ♒ on 24 May 2011 at 18:52
  • New Moon in Gemini ♊ on 1 June 2011 at 21:03
  • First Quarter in Virgo ♍ on 9 June 2011 at 02:11

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 140 / 1093

The Moon is 8 days young. Earth's natural satellite is moving through the first part of current synodic month. This is lunation 140 of Meeus index or 1093 from Brown series.

PreviousCurrent lunationNext

Synodic month length 29.59 days

The length of the lunation is 29 days, 14 hours and 12 minutes. It is 2 hours and 21 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 1 hour and 28 minutes longer than the mean synodic month length. It is 5 hours and 35 minutes shorter compared to 21st century's longest synodic month length.

Lunar orbit position on

True anomaly ∠216.7°

At the beginning of the lunation cycle the true anomaly is ∠216.7°. At the beginning of next synodic month the true anomaly is going to be ∠248.4°.

Moon before apogee

11 days after point of apogee on 29 April 2011 at 18:02 in ♓ Pisces. The lunar orbit is getting narrow, while the Moon is moving towards the Earth. It will keep this direction over the next 3 days, until the Moon reaches the point of next perigee on 15 May 2011 at 11:18 in ♎ Libra.

Previous apogeeNext perigee

Distance to Moon 367 026 km

The Moon is 367 026 km (228 059 mi) away from Earth and getting closer over the next 3 days until the point perigee when Earth-Moon distance is going to be 362 133 km (225 019 mi).

Moon after descending node

4 days after descending node on 6 May 2011 at 14:54 in ♊ Gemini. The Moon is located south of the ecliptic over the following 7 days, until the lunar orbit crosses from South to North in ascending node on 19 May 2011 at 09:03 in ♐ Sagittarius.

Previous nodeNext node

Draconic month

19 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 after northern standstill

5 days since the previous standstill on 6 May 2011 at 03:54 in ♊ Gemini when the Moon has reached North declination of ∠23.421°, the lunar orbit is extending southward over the next 7 days to face maximum declination of ∠-23.403° at the point of next southern standstill on 18 May 2011 at 23:26 in ♐ Sagittarius.

Previous standstillNext standstill

Syzygy in 5 days

In 5 days on 17 May 2011 at 11:09 in ♏ Scorpio 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.

Previous syzygyNext syzygy

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