Last Quarter on

Moon phase on 13 September 2017 Wednesday is Last Quarter, 22 days old Moon is in Gemini.

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Moon phase for

Lunar calendar 2017 | September 2017

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

Last Quarter 47% illuminated

Last Quarter is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 47% and getting smaller. The 22 days old Moon is in ♊ Gemini.

* The exact date and time of this Last Quarter phase is on 13 September 2017 at 06:25 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 midnight and sets at noon. It is visible to the south in the morning.

Moon in ♊ Gemini

Moon is passing about ∠24° of ♊ Gemini tropical zodiac sector.

Apparent angular diameter ∠1973"

Lunar disc appears visually 3.4% wider than solar disc. Moon and Sun apparent angular diameters are ∠1973" and ∠1907".

Hunter Moon after 22 days

Next Full Moon is the Hunter Moon of October 2017 after 22 days on 5 October 2017 at 18:40.

Upcoming main Moon phases

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 218 / 1171

The Moon is 22 days old. Earth's natural satellite is moving through the last part of current synodic month. This is lunation 218 of Meeus index or 1171 from Brown series.

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Synodic month length 29.46 days

Length of current 218 lunation is 29 days, 11 hours and 1 minute. It is 2 hours and 42 minutes shorter than next lunation 219 length.

Lunation length shorter than mean

Length of current synodic month is 1 hour and 44 minutes shorter than the mean length of synodic month, but it is still 4 hours and 25 minutes longer, compared to 21st century shortest.

Lunar orbit position on

True anomaly ∠49.5°

This New Moon true anomaly is ∠49.5°. At beginning of next synodic month true anomaly will be ∠79°. 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 perigee

Moon is reaching point of perigee on this date at 16:04, this is 14 days after last apogee on 30 August 2017 at 11:25 in ♐ Sagittarius. Lunar orbit is starting to get wider, while the Moon is moving outward the Earth for 13 days ahead, until it will get to the point of next apogee on 27 September 2017 at 06:49 in ♐ Sagittarius.

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Distance to Moon 369 856 km

This perigee Moon is 369 856 km (229 818 mi) away from Earth. This is the year's farthest perigee of 2017. It is 7 348 km closer than the mean perigee distance, but it is still 500 km farther than the closest perigee of 21st century.

Moon before ascending node

8 days after its descending node on 4 September 2017 at 18:41 in ♒ Aquarius, the Moon is following the southern part of its orbit for the next 4 days, until it will cross the ecliptic from South to North in ascending node on 17 September 2017 at 18:28 in ♌ Leo.

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Draconic month

23 days after beginning of current draconic month in ♌ Leo, the Moon is moving from the second to the final part of it.

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Moon before northern standstill

12 days after previous South standstill on 1 September 2017 at 02:03 in ♑ Capricorn, when Moon has reached southern declination of ∠-19.393°. Next day the lunar orbit moves northward to face North declination of ∠19.438° in the next northern standstill on 14 September 2017 at 13:00 in ♋ Cancer.

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Syzygy in 6 days

After 6 days on 20 September 2017 at 05:30 in ♍ Virgo, the Moon will be in New Moon geocentric conjunction with the Sun and this alignment forms next Sun-Moon-Earth syzygy.

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