Waning Gibbous Moon
Waning Gibbous MoonImage credit: NASA/Goddard Space Flight Center Scientific Visualization Studio.(large image)

Waning Gibbous in Aquarius

Waning Gibbous on . Illuminated surface of the Moon is 75% and getting smaller. Lunar cycle is 19 days old.

Moonrise and moonset

Moon rises in the evening and sets in the morning. It is visible to the southwest and it is high in the sky after midnight.

Upcoming main moon phases

Main moon phases of the following lunar cycle.

Moon phase and lunation details

Moon in ♒ Aquarius

Moon is passing about ∠9° of ♒ Aquarius tropical zodiac sector.

4 days after Full Moon

Previous main lunar phase is the Full Moon before 4 days on 25 May 2013 at 04:25.

Flower Moon before 4 days

Next Full Moon is the Strawberry Moon of June 2013 after 24 days on 23 June 2013 at 11:32.

Moderate tide

There is medium ocean tide on this date. Sun and Moon gravitational forces are not aligned, but meet at very acute angle, so their combined tidal force is moderate.

Apparent angular diameter ∠1950"

Lunar disc appears visually 3% wider than solar disc. Moon and Sun apparent angular diameters are ∠1950" and ∠1893".

Lunation 165 / 1118

The Moon is 19 days old and navigating from the middle to the last part of the current synodic month. This is lunation 165 of Meeus index or 1118 from Brown series.

Synodic month length 29.64 days

The length of this lunation is 29 days, 15 hours and 28 minutes and it is 10 minutes longer than the upcoming lunation's length. This is the year's longest synodic month of 2013. The lengths of the following synodic months are going to increase with the lunar orbit true anomaly getting closer to the value it has at the point of New Moon at apogee (∠180°).

Lunation length longer than mean

The length of the current synodic month is 2 hours and 44 minutes longer than the mean synodic month length. It is 4 hours and 19 minutes shorter compared to 21st century's longest synodic month length.

Lunar orbit details for

True anomaly ∠143.3°

The true anomaly of the Moon orbit at the beginning of this lunation cycle is ∠143.3° and at the beginning of the next lunar synodic month the true anomaly is going to be ∠168.8°.

Moon after perigee

3 days since point of perigee on 26 May 2013 at 01:45 in ♐ Sagittarius the lunar orbit is getting widen while the Moon is moving away from the Earth. It will keep this direction over the next 11 days until the Moon reaches the point of next apogee on 9 June 2013 at 21:40 in ♊ Gemini.

Distance to Moon 367 509 km

The Moon is 367 509 km (228 360 mi) away from Earth and getting further over the next 11 days until the point apogee when Earth-Moon distance is going to be 406 487 km (252 579 mi).

Moon after ascending node

5 days after ascending node on 24 May 2013 at 00:40 in ♏ Scorpio the Moon is positioned north of the ecliptic over the following 7 days until the lunar crosses the ecliptic again from North to South in descending node on 6 June 2013 at 00:59 in ♉ Taurus.

Moon after southern standstill

3 days since the last southern standstill on 26 May 2013 at 04:47 in ♐ Sagittarius when the Moon has reached South declination of ∠-20.182° the lunar orbit is extending northward over the next 10 days to face maximum declination of ∠20.200° at the point of next northern standstill on 8 June 2013 at 19:16 in ♊ Gemini.

Draconic month

5 days since the beginning of this draconic month in ♏ Scorpio the Moon is navigating from the beginning to the first part of the lunar cycle.

Syzygy in 10 days

In 10 days on 8 June 2013 at 15:56 in ♊ Gemini 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.

Lunar calendar

Sources and credits

Parts of this Lunar Calendar are based on Planetary Ephemeris Data Courtesy of Fred Espenak, www.Astropixels.com

Moon phase image credit to NASA/Goddard Space Flight Center Scientific Visualization Studio, svs.gsfc.nasa.gov