First Quarter on

Moon phase on 25 August 2012 Saturday is First Quarter, 8 days young Moon is in Sagittarius.

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Moon phase for

Lunar calendar 2012 | August 2012

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

First Quarter 61% illuminated

First Quarter is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 61% and growing larger. The Moon is in ♐ Sagittarius.

* The exact date and time of this First Quarter phase is on 24 August 2012 at 13:54 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 ♐ Sagittarius

Moon is passing about ∠15° of ♐ Sagittarius tropical zodiac sector.

Upcoming main Moon phases

Sturgeon Moon after 6 days

Next Full Moon is the Sturgeon Moon of August after 6 days on 31 August 2012 at 13:58.

Apparent angular diameter ∠1968"

Lunar disc appears visually 3.6% wider than solar disc. Moon and Sun apparent angular diameters are ∠1968" and ∠1899".

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 156 / 1109

Moon is 8 days young. Earth's natural satellite is moving through the first part of current synodic month. This is lunation 156 of Meeus index or 1109 from Brown series.

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Synodic month length 29.43 days

Length of current 156 lunation is 29 days, 10 hours and 16 minutes. It is 24 minutes longer than next lunation 157.

Lunation length shorter than mean

Length of current synodic month is 2 hours and 28 minutes shorter than the mean length of synodic month, but it is still 3 hours and 41 minutes longer, compared to 21st century shortest.

Lunar orbit position on

True anomaly ∠283.7°

This lunation true anomaly is ∠283.7°. At the beginning of next synodic month true anomaly is ∠312.9°. 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 after perigee

1 day after point of perigee on 23 August 2012 at 19:39, lunar orbit gets wider while the Moon moves outward the Earth. It keeps this direction for next 12 days until it gets to the point of apogee on 7 September 2012 at 06:00.

Distance to Moon 364 146 km

Moon is 364 146 km (226 270 mi) away from Earth on this date. At previous perigee point before 1 day, distance is 369 731 km (229 740 mi). Moon moves farther next 12 days until apogee, when Earth-Moon distance reaches 404 296 km (251 218 mi).

Moon after ascending node

1 day after its ascending node on 24 August 2012 at 11:38, the Moon follows the northern part of its orbit for the next 12 days untill it crosses the ecliptic from North to South in descending node on 7 September 2012 at 02:08.

Draconic month

1 day 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 18:40 on this date Moon meets its South standstill point and reaches southern declination of ∠-21.379°. Next 14 days lunar orbit moves northward in opposite direction to face North declination of ∠21.244° in its northern standstill point on 8 September 2012 at 18:10.

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 31 August 2012 at 13:58.

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