Waxing Gibbous on

Moon phase on 21 January 2013 Monday is Waxing Gibbous, 9 days young Moon is in Taurus.

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Moon phase details for

Lunar calendar 2013 | January 2013

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

Waxing Gibbous 73% illuminated

Waxing Gibbous is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 73% and growing larger.

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2 days after First Quarter

Previous main lunar phase is the First Quarter before 2 days on 18 January 2013 at 23:45.

Moonrise and moonset

Moon rises in the afternoon and sets after midnight to early morning. It is visible to the southeast in early evening and it is up for most of the night.

Apparent angular diameter ∠1771"

Lunar disc appears visually 9.59% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1771" and ∠1950".

Wolf Moon after 5 days

Next Full Moon is the Wolf Moon of January after 5 days on 27 January 2013 at 04:38.

Moon in Taurus

Moon is leaving the last ∠2° of Taurus tropical zodiac sector and enters Gemini later.

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.

Upcoming Moon phases

Synodic month details

Lunation 161 / 1114

Moon is 9 days young. Earth's natural satellite is moving from the first to the middle part of current synodic month. This is lunation 161 of Meeus index or 1114 from Brown series.

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Synodic month length 29.48 days

Length of current 161 lunation is 29 days, 11 hours and 36 minutes. It is 55 minutes shorter than next lunation 162.

Lunation length shorter than mean

Length of current synodic month is 1 hour and 8 minutes shorter than the mean length of synodic month, but it is still 5 hours and 1 minute longer, compared to 21st century shortest.

Lunar orbit position on

True anomaly ∠23.3°

This lunation true anomaly is ∠23.3°. At the beginning of next synodic month true anomaly is ∠44.2°. The length of upcoming synodic months increases since the true anomaly gets closer to the value of New Moon at point of apogee (∠180°).

Moon before apogee

11 days after point of perigee on 10 January 2013 at 10:26, lunar orbit gets wider while the Moon moves outward the Earth. It keeps this direction for next 1 day until it gets to the point of apogee on 22 January 2013 at 10:52.

Distance to Moon 404 678 km

Moon is 404 678 km (251 455 mi) away from Earth on this date. At previous perigee point before 11 days, distance is 360 048 km (223 723 mi). Moon moves farther next 1 day until apogee, when Earth-Moon distance reaches 405 313 km (251 850 mi).

Moon in descending node

Moon is in descending node at 01:19 on this date, it crosses the ecliptic from South to North. Moon follows the southern part of its orbit for the next 13 days to meet ascending node on 4 February 2013 at 02:14.

Draconic month

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

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Moon before northern standstill

11 days after previous South standstill on 9 January 2013 at 15:22, when Moon reaches southern declination of ∠-20.879°, lunar orbit moves northward for the next 1 day to face North declination of ∠20.816° in the next northern standstill on 23 January 2013 at 05:12.

Syzygy in 5 days

After 5 days the Moon is in Full Moon opposition with the Sun and this alignment forms next Sun-Earth-Moon syzygy on 27 January 2013 at 04:38.

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