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The Moon

The Moon Now

Ephemeris

Aquarius
Sun in Aquarius
Scorpio
Moon in Scorpio
18 degrees
Third Quarter Moon
Third Quarter Moon
23 days old

Moon Phases 2022

Lunation New Moon First Quarter Full Moon Third Quarter Duration
1225 2 jan 19:33 9 jan 19:11 18 jan 00:48 25 jan 14:40 29d 11h 12m
1226 1 feb 06:46 8 feb 14:50 16 feb 17:56 23 feb 23:32 29d 11h 49m
1227 2 mrt 18:34 10 mrt 11:45 18 mrt 08:17 25 mrt 06:37 29d 12h 50m
1228 1 apr 08:24 9 apr 08:47 16 apr 20:55 23 apr 13:56 29d 14h 04m
1229 30 apr 22:28 9 mei 02:21 16 mei 06:14 22 mei 20:43 29d 15h 02m
1230 30 mei 13:30 7 jun 16:48 14 jun 13:51 21 jun 05:10 29d 15h 22m
1231 29 jun 04:52 7 jul 04:14 13 jul 20:37 20 jul 16:18 29d 15h 03m
1232 28 jul 19:54 5 aug 13:06 12 aug 03:35 19 aug 06:36 29d 14h 22m
1233 27 aug 10:17 3 sep 20:07 10 sep 11:59 17 sep 23:52 29d 13h 37m
1234 25 sep 23:54 3 okt 02:14 9 okt 22:54 17 okt 19:15 29d 12h 54m
1235 25 okt 12:48 1 nov 07:37 8 nov 12:02 16 nov 14:27 29d 12h 09m
1236 23 nov 23:57 30 nov 15:36 8 dec 05:08 16 dec 09:56 29d 11h 20m
1237 23 dec 11:16 30 dec 02:20 29d 10h 36m
* All times are local time for Amsterdam. Time is adjusted for DST when applicable. They take into account refraction. Dates are based on the Gregorian calendar. Current lunation cycle is highlighted yellow. Special events are highlighted blue. Hover over events for more details.

Moon Phases 2022 - Northern Hemisphere - 4K

Moon Phases 2022 - Southern Hemisphere - 4K

Moon_phases

By Orion 8 (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

By Orion 8 (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

Moon Phases Explained 

It takes our Moon about 29.5 days to completely cycle through all eight phases. Occasionally (about every 2.7 years) there are two Full Moons in the same month. This is referred to as a Blue Moon. Hence the saying

"Once in a Blue Moon".

New Moon

The side of the moon facing the Earth is not illuminated. Additionally, the moon is up through out the day, and down through out the night. For these reasons we can not see the moon during this phase.

Waxing Crescent

ThaliaTraianou

During this phase, part of the Moon is beginning to show. This lunar sliver can be seen each evening for a few minutes just after sunset. We say that the Moon is "waxing" because each night a little bit more is visible for a little bit longer.

First Quarter

During first quarter, 1/2 of the moon is visible for the first half of the evening, and then goes down, leaving the sky very dark.

Waxing Gibbous


When most of the Moon is visible we say it is a Gibbous Moon. Observers can see all but a little sliver of the moon. During this phase, the Moon remains in the sky most of the night.

Full Moon

pierre

When we can observe the entire face of the moon, we call it a Full Moon. A full moon will rise just as the evening begins, and will set about the time morning is ushered in.

Waning Gibbous


Like the Waxing Gibbous Moon, during this phase, we can see all but a sliver of the Moon. The difference is that instead of seeing more of the Moon each night, we begin to see less and less of the Moon each night. This is what the word "waning" means.

Last Quarter

Manderzwicky

During a Last Quarter Moon we can see exactly 1/2 of the Moon's lighted surface.

Waning Crescent


Finally, during a Waning Crescent Moon, observers on Earth can only see a small sliver of the Moon, and only just before morning. Each night less of the Moon is visible for less time.

Effect of parallax !!!
The Earth subtends an angle of about two degrees, when seen from the Moon. This means that an observer on Earth who sees the Moon when it is close to the eastern horizon sees it from an angle that is about two degrees different from the line of sight of an observer who sees the Moon on the western horizon. The Moon moves about 12 degrees around its orbit per day, so, if these observers were stationary, they would see the phases of the Moon at times that differ by about one-sixth of a day, or four hours. But in reality the observers are on the surface of the rotating Earth, so someone who sees the Moon on the eastern horizon at one moment sees it on the western horizon about 12 hours later. This adds an oscillation to the apparent progression of the lunar phases. They appear to occur more slowly when the Moon is high in the sky than when it is below the horizon. The Moon appears to move jerkily, and the phases do the same. The amplitude of this oscillation is never more than about four hours, which is a small fraction of a month. It does not have any obvious effect on the appearance of the Moon. However, it does affect accurate calculations of the times of lunar phases.

https://en.wikipedia.org/wiki/Parallax

learning tip 1

Herbert Hall Turner

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