First Quarter on

Moon phase on 19 March 2013 Tuesday is First Quarter, 7 days young Moon is in Gemini.

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Moon phase for

Lunar calendar 2013 | March 2013

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

First Quarter 48% illuminated

First Quarter is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 48% and growing larger. The 7 days young Moon is in ♊ Gemini.

* The exact date and time of this First Quarter phase is on 19 March 2013 at 17:27 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 ∠3° of ♊ Gemini tropical zodiac sector and will enter ♋ Cancer later.

Apparent angular diameter ∠1768"

Lunar disc appears visually 8.6% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1768" and ∠1927".

Worm Moon after 7 days

Next Full Moon is the Worm Moon of March 2013 after 7 days on 27 March 2013 at 09:27.

Upcoming main Moon phases

  • Full Moon in Libra ♎ on 27 March 2013 at 09:27
  • Last Quarter in Capricorn ♑ on 3 April 2013 at 04:37
  • New Moon in Aries ♈ on 10 April 2013 at 09:35
  • First Quarter in Cancer ♋ on 18 April 2013 at 12:31

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 163 / 1116

The Moon is 7 days young. Earth's natural satellite is moving through the first part of current synodic month. This is lunation 163 of Meeus index or 1116 from Brown series.

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Synodic month length 29.57 days

Length of current 163 lunation is 29 days, 13 hours and 44 minutes. It is 1 hour and 9 minutes shorter than next lunation 164 length.

Lunation length longer than mean

Length of current synodic month is 1 hour longer than the mean length of synodic month, but it is still 6 hours and 3 minutes shorter, compared to 21st century longest.

Lunar orbit position on

True anomaly ∠73.6°

This New Moon true anomaly is ∠73.6°. At beginning of next synodic month true anomaly will be ∠110.3°. 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 in apogee

Moon is reaching point of apogee on this date at 03:13, this is 13 days after last perigee on 5 March 2013 at 23:20 in ♐ Sagittarius. Lunar orbit is starting to get closer, while the Moon is moving inward the Earth for 11 days ahead, until it will get to the point of next perigee on 31 March 2013 at 03:55 in ♐ Sagittarius.

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Distance to Moon 404 262 km

This apogee Moon is 404 262 km (251 197 mi) away from Earth. This is the year's closest apogee of 2013. It is 1 146 km farther than the mean apogee distance, but it is still 211 km closer than the farthest apogee of 21st century.

Moon after descending node

3 days after its descending node on 16 March 2013 at 06:15 in ♉ Taurus, the Moon is following the southern part of its orbit for the next 10 days, until it will cross the ecliptic from South to North in ascending node on 30 March 2013 at 05:55 in ♏ Scorpio.

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Draconic month

16 days after beginning of current draconic month in ♏ Scorpio, the Moon is moving from the second to the final part of it.

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Moon after northern standstill

1 day after previous North standstill on 18 March 2013 at 21:50 in ♊ Gemini, when Moon has reached northern declination of ∠20.335°. Next 13 days the lunar orbit moves southward to face South declination of ∠-20.250° in the next southern standstill on 1 April 2013 at 12:03 in ♐ Sagittarius.

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Syzygy in 7 days

After 7 days on 27 March 2013 at 09:27 in ♎ Libra, the Moon will be in Full Moon geocentric opposition with the Sun and this alignment forms next Sun-Earth-Moon syzygy.

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