First Quarter on

Moon phase on 13 March 2011 Sunday is First Quarter, 8 days young Moon is in Gemini.

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Moon phase for

Lunar calendar 2011 | March 2011

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

First Quarter 55% illuminated

First Quarter is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 55% and growing larger. The Moon is in ♊ Gemini.

* The exact date and time of this First Quarter phase is on 12 March 2011 at 23:45 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 ♊ Gemini

Moon is leaving the last ∠1° of ♊ Gemini tropical zodiac sector and will enter ♋ Cancer later.

Upcoming main Moon phases

  • Full Moon in ♍ Virgo on
  • Last Quarter in ♑ Capricorn on
  • New Moon in ♈ Aries on
  • First Quarter in ♋ Cancer on

Worm Moon after 6 days

Next Full Moon is the Worm Moon of March after 6 days on 19 March 2011 at 18:10.

Apparent angular diameter ∠1870"

Lunar disc appears visually 3.18% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1870" and ∠1930".

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 138 / 1091

Moon is 8 days young. Earth's natural satellite is moving through the first 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

Length of current 138 lunation is 29 days, 17 hours and 46 minutes. It is 1 hour and 28 minutes longer than next lunation 139.

Lunation length longer than mean

Length of current synodic month is 5 hours and 2 minutes longer than the mean length of synodic month, but it is still 2 hours and 1 minute shorter, compared to 21st century longest.

Lunar orbit position on

True anomaly ∠167°

This lunation true anomaly is ∠167°. At the beginning of next synodic month true anomaly is ∠190.9°. The length of upcoming synodic months decreases since the true anomaly gets closer to the value of New Moon at point of perigee (∠0°or∠360°).

Moon before perigee

7 days after point of apogee on 6 March 2011 at 07:50, lunar orbit gets closer while the Moon moves inward the Earth. It keeps this direction for next 6 days until it gets to the point of perigee on 19 March 2011 at 19:09.

Distance to Moon 383 334 km

Moon is 383 334 km (238 193 mi) away from Earth on this date. At previous apogee point before 7 days, distance is 406 584 km (252 640 mi). Moon moves closer next 6 days until perigee, when Earth-Moon distance reaches 356 578 km (221 567 mi).

Moon in descending node

Moon is in descending node at 11:55 on this date, it crosses the ecliptic from South to North. Moon follows the southern part of its orbit for the next 12 days to meet ascending node on 25 March 2011 at 21:09.

Draconic month

14 days after its beginning, the Moon is moving through the middle part of current draconic month.

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Moon after northern standstill

1 day after previous North standstill on 12 March 2011 at 17:06, when Moon reaches northern declination of ∠23.825°, lunar orbit moves southward for the next 11 days to face South declination of ∠-23.716° in the next southern standstill on 25 March 2011 at 05:02.

Syzygy in 6 days

After 6 days the Moon is in Full Moon opposition with the Sun and this alignment forms next Sun-Earth-Moon syzygy on 19 March 2011 at 18:10.

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