Waning Crescent on

Moon phase on 31 December 2013 Tuesday is Waning Crescent, 28 days old Moon is in Sagittarius.

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Moon phase details for

Lunar calendar 2013 | December 2013

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

Waning Crescent 1% illuminated

Waning Crescent is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 1% and getting smaller.

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5 days after Last Quarter

Previous main lunar phase is the Last Quarter before 5 days on 25 December 2013 at 13:48.

Moonrise and moonset

Moon rises after midnight to early morning and sets in the afternoon. It is visible in the early morning low to the east.

Apparent angular diameter ∠1962"

Lunar disc appears visually 0.57% wider than solar disc. Moon and Sun apparent angular diameters are ∠1962" and ∠1951".

Wolf Moon after 15 days

Next Full Moon is the Wolf Moon of January after 15 days on 16 January 2014 at 04:52.

Moon in Sagittarius

Moon is leaving the last ∠4° of Sagittarius tropical zodiac sector and enters Capricorn later.

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.

Upcoming Moon phases

Synodic month details

Lunation 172 / 1125

Moon is 28 days old. Earth's natural satellite is moving from the second to the final part of current synodic month. This is lunation 172 of Meeus index or 1125 from Brown series.

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Synodic month length 29.45 days

Length of current 172 lunation is 29 days, 10 hours and 52 minutes. It is 28 minutes longer than next lunation 173. This is the shortest synodic month of 2013.

Lunation length shorter than mean

Length of current synodic month is 1 hour and 52 minutes shorter than the mean length of synodic month, but it is still 4 hours and 17 minutes longer, compared to 21st century shortest.

Lunar orbit position on

True anomaly ∠336.4°

This lunation true anomaly is ∠336.4°. At the beginning of next synodic month true anomaly is ∠353°. 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

11 days after point of apogee on 19 December 2013 at 23:49, lunar orbit gets closer while the Moon moves inward the Earth. It keeps this direction for next 1 day until it gets to the point of perigee on 1 January 2014 at 21:00.

Distance to Moon 365 248 km

Moon is 365 248 km (226 955 mi) away from Earth on this date. At previous apogee point before 11 days, distance is 406 269 km (252 444 mi). Moon moves closer next 1 day until perigee, when Earth-Moon distance reaches 356 922 km (221 781 mi).

Moon after ascending node

3 days after its ascending node on 28 December 2013 at 00:21, the Moon follows the northern part of its orbit for the next 8 days untill it crosses the ecliptic from North to South in descending node on 9 January 2014 at 11:26.

Draconic month

3 days after its beginning, the Moon is moving from the beginning to the first part of current draconic month.

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Moon in southern standstill

At 04:49 on this date Moon meets its South standstill point and reaches southern declination of ∠-19.537°. Next 12 days lunar orbit moves northward in opposite direction to face North declination of ∠19.501° in its northern standstill point on 13 January 2014 at 08:14.

Syzygy in 1 day

After 1 day the Moon is in New Moon conjunction with the Sun and this alignment forms next Sun-Moon-Earth syzygy on 1 January 2014 at 11:14.

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