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

Waning Gibbous in Aries

Waning Gibbous on . The illuminated surface of the moon is 83% and getting smaller. The lunar cycle is 18 days old.

Moonrise and moonset

The 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.

Moon phases on nearby dates

Slide horizontally to discover the moon phase on nearby dates.

Upcoming main moon phases

Main moon phases of the following lunar cycle.

Moon phase and lunation details

Moon is entering ♈ Aries

Moon is passing first ∠2° of ♈ Aries tropical zodiac sector.

4 days after Full Moon

Previous main lunar phase is the Full Moon before 4 days on 1 August 2099 at 02:59.

Sturgeon Moon before 4 days

Next Full Moon is the Sturgeon Moon of August 2099 after 25 days on 30 August 2099 at 17:56.

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.

Apparent angular diameter ∠1768"

Lunar disc appears visually 6.8% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1768" and ∠1892".

Lunation 1231 / 2184

The Moon is 18 days old and navigating from the middle to the last part of the current synodic month. This is lunation 1231 of Meeus index or 2184 from Brown series.

Synodic month length 29.33 days

The length of this lunation is 29 days, 7 hours and 54 minutes and it is 2 minutes shorter than the upcoming lunation's length. This is the year's shortest synodic month of 2099. The lengths of the following synodic months are going to decrease with the lunar orbit true anomaly getting closer to the value it has at the point of New Moon at perigee (∠0° or ∠360°).

Lunation length shorter than mean

The length of the current synodic month is 4 hours and 50 minutes shorter than the mean synodic month length. It is 1 hour and 19 minutes longer compared to 21st century's shortest synodic month length.

Lunar orbit details for

True anomaly ∠320.2°

The true anomaly of the Moon orbit at the beginning of this lunation cycle is ∠320.2° and at the beginning of the next lunar synodic month the true anomaly is going to be ∠339.4°.

Moon at apogee

Moon is at apogee at 08:15 about 15 days since last perigee on 20 July 2099 at 12:45 in ♍ Virgo the lunar orbit is going to narrow while the Moon is moving towards the Earth over the upcoming 12 days until point of next perigee on 17 August 2099 at 14:24 in ♍ Virgo.

Distance to Moon 405 336 km

This apogee Moon is 405 336 km (251 864 mi) away from Earth. It is 72 km further than the mean apogee distance, but it is still 1 373 km closer than the farthest apogee of 21st century.

Moon in ascending node

Moon is in ascending node in ♓ Pisces at 03:00 crossing the ecliptic from South to North. Lunar position remains north of if for the upcoming 13 days until Moon's next descending node later on 18 August 2099 at 13:42 in ♍ Virgo.

Moon before northern standstill

7 days since the last southern standstill on 28 July 2099 at 23:58 in ♐ Sagittarius when the Moon has reached South declination of ∠-28.504° the lunar orbit is extending northward over the next 7 days to face maximum declination of ∠28.579° at the point of next northern standstill on 12 August 2099 at 14:22 in ♊ Gemini.

New draconic month

At 03:00 in the point ot ascending node the Moon is completing the last draconic month and is entering a new one while the lunar orbit is crossing the ecliptic from South to North.

Syzygy in 10 days

In 10 days on 16 August 2099 at 08:54 in ♌ Leo 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