Waning Crescent on

Moon phase on 31 August 2013 Saturday is Waning Crescent, 24 days old Moon is in Cancer.

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Moon phase details for

Lunar calendar 2013 | August 2013

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

Waning Crescent 22% illuminated

Waning Crescent is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 22% and getting smaller.

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3 days after Last Quarter

Previous main lunar phase is the Last Quarter before 3 days on 28 August 2013 at 09:35.

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 ∠1768"

Lunar disc appears visually 7.27% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1768" and ∠1901".

Harvest Moon after 18 days

Next Full Moon is the Harvest Moon of September after 18 days on 19 September 2013 at 11:13.

Moon in Cancer

Moon is passing about ∠12° of Cancer tropical zodiac sector.

Upcoming Moon phases

Lunar orbit details for

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 168 / 1121

Moon is 24 days old. Earth's natural satellite is moving from the second to the final part of current synodic month. This is lunation 168 of Meeus index or 1121 from Brown series.

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Synodic month length 29.57 days

Length of current 168 lunation is 29 days, 13 hours and 45 minutes. It is 47 minutes longer than next lunation 169.

Lunation length longer than mean

Length of current synodic month is 1 hour and 1 minute longer than the mean length of synodic month, but it is still 6 hours and 2 minutes shorter, compared to 21st century longest.

True anomaly ∠216.9°

This lunation true anomaly is ∠216.9°. At the beginning of next synodic month true anomaly is ∠249.2°. 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 after apogee

1 day after point of apogee on 30 August 2013 at 23:46, lunar orbit gets closer while the Moon moves inward the Earth. It keeps this direction for next 15 days until it gets to the point of perigee on 15 September 2013 at 16:34.

Distance to Moon 405 460 km

Moon is 405 460 km (251 941 mi) away from Earth on this date. At previous apogee point before 1 day, distance is 404 883 km (251 583 mi). Moon moves closer next 15 days until perigee, when Earth-Moon distance reaches 367 388 km (228 284 mi).

Moon after descending node

5 days after its descending node on 26 August 2013 at 08:19, the Moon follows the southern part of its orbit for the next 9 days untill it crosses the ecliptic from South to North in ascending node on 9 September 2013 at 17:29.

Draconic month

17 days after its beginning, the Moon is moving from the second to the final part of current draconic month.

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Moon after northern standstill

1 day after previous North standstill on 29 August 2013 at 17:03, when Moon reaches northern declination of ∠19.801°, lunar orbit moves southward for the next 12 days to face South declination of ∠-19.685° in the next southern standstill on 12 September 2013 at 18:30.

Syzygy in 4 days

After 4 days the Moon is in New Moon conjunction with the Sun and this alignment forms next Sun-Moon-Earth syzygy on 5 September 2013 at 11:36.

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