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

The length of the lunation is 29 days, 11 hours and 1 minute. It is 2 hours and 42 minutes shorter than the next lunation's length. The lengths of the following synodic months are going to increasing with the true anomaly getting closer to the value it has at the point of New Moon at apogee (∠180°).

Lunation length shorter than mean

The length of the current synodic month is 1 hour and 44 minutes shorter than the mean synodic month length. It is 4 hours and 25 minutes longer compared to 21st century's shortest synodic month length.

Lunar orbit position on

True anomaly ∠49.5°

At the beginning of the lunation cycle the true anomaly is ∠49.5°. At the beginning of next synodic month the true anomaly is going to be ∠79°.

Moon at perigee

Moon is at perigee at 16:04. It is 14 days after previous apogee on 30 August 2017 at 11:25 in ♐ Sagittarius. Lunar orbit is going to widen while the Moon is moving away from the Earth over the next 13 days, until 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 further than the closest perigee of 21st century.

Moon before ascending node

8 days after descending node on 4 September 2017 at 18:41 in ♒ Aquarius. The Moon is located south of the ecliptic over the following 4 days, until the lunar orbit crosses from South to North in ascending node on 17 September 2017 at 18:28 in ♌ Leo.

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Draconic month

23 days since the beginning of current draconic month in ♌ Leo, the Moon is navigating from the second to the final part of the cycle.

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Moon before northern standstill

12 days since the previous standstill on 1 September 2017 at 02:03 in ♑ Capricorn when the Moon has reached South declination of ∠-19.393°, the lunar orbit is extending northward over the next day to face maximum declination of ∠19.438° at the point of next northern standstill on 14 September 2017 at 13:00 in ♋ Cancer.

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Syzygy in 6 days

In 6 days on 20 September 2017 at 05:30 in ♍ Virgo the Moon is going to be in a New Moon geocentric conjunction with the Sun and thus forming the next Sun-Moon-Earth syzygy alignment.

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