First
Quarter ♐ Sagittarius
Moon phase for
Image credit: NASA/Goddard Space Flight Center Scientific Visualization Studio.
First Quarter 47% illuminated
First Quarter is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 47% and growing larger. The 7 days young Moon is in ♏ Scorpio.
* The exact date and time of this First Quarter phase is on 25 August 2031 at 18:40 UTC.
Moon phases for next 7 days
Tuesday Tue
Wednesday Wed
Thursday Thu
Friday Fri
Saturday Sat
Sunday Sun
Monday Mon
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 ♏ Scorpio
Moon is leaving the last ∠1° of ♏ Scorpio tropical zodiac sector and will enter ♐ Sagittarius later.
Apparent angular diameter ∠1934"
Lunar disc appears visually 1.8% wider than solar disc. Moon and Sun apparent angular diameters are ∠1934" and ∠1898".
Harvest Moon after 6 days
Next Full Moon is the Harvest Moon of September 2031 after 6 days on 1 September 2031 at 09:20.
Upcoming main Moon phases
- Full Moon in Pisces ♓ on 1 September 2031 at 09:20
- Last Quarter in Gemini ♊ on 8 September 2031 at 16:14
- New Moon in Virgo ♍ on 16 September 2031 at 18:47
- First Quarter in Capricorn ♑ on 24 September 2031 at 01:20
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 391 / 1344
The Moon is 7 days young. Earth's natural satellite is moving through the first part of current synodic month. This is lunation 391 of Meeus index or 1344 from Brown series.
Synodic month length 29.59 days
The length of the lunation is 29 days, 14 hours and 15 minutes. It is 41 minutes longer than the next lunation's length. The lengths of the following synodic months are going to decreasing with the true anomaly getting closer to the value it has at the point of New Moon at perigee (∠0° or ∠360°).
Lunation length longer than mean
The length of the current synodic month is 1 hour and 31 minutes longer than the mean synodic month length. It is 5 hours and 32 minutes shorter compared to 21st century's longest synodic month length.
Lunar orbit position on
True anomaly ∠213.5°
At the beginning of the lunation cycle the true anomaly is ∠213.5°. At the beginning of next synodic month the true anomaly is going to be ∠245.2°.
Moon before apogee
10 days after point of apogee on 14 August 2031 at 21:37 in ♋ Cancer. The lunar orbit is getting narrow, while the Moon is moving towards the Earth. It will keep this direction over the next 5 days, until the Moon reaches the point of next perigee on 30 August 2031 at 12:53 in ♒ Aquarius.
Distance to Moon 370 706 km
The Moon is 370 706 km (230 346 mi) away from Earth and getting closer over the next 5 days until the point perigee when Earth-Moon distance is going to be 361 684 km (224 740 mi).
Moon in ascending node
Moon is in ascending node in ♏ Scorpio at 01:21 crossing the ecliptic from South to North to meet descending node 12 days later on 6 September 2031 at 16:34 in ♉ Taurus.
New draconic month
At 01:21 the Moon completes the previous draconic month and enters the new one.
Moon before southern standstill
12 days since the previous standstill on 12 August 2031 at 15:58 in ♊ Gemini when the Moon has reached North declination of ∠20.868°, the lunar orbit is extending southward over the next day to face maximum declination of ∠-20.731° at the point of next southern standstill on 26 August 2031 at 23:55 in ♐ Sagittarius.
Syzygy in 6 days
In 6 days on 1 September 2031 at 09:20 in ♓ Pisces the Moon is going to be in a Full Moon geocentric opposition with the Sun and thus forming the next Sun-Earth-Moon syzygy alignment.
