.

The Moon

The Moon Now

Ephemeris

Cancer
Sun in Cancer
Capricorn
Moon in Capricorn
17 degrees
Full Moon
Full Moon
14 days old

Moon Phases 2020

Eastern Time Zone/US & Canada
(GMT-05:00)

 

Lunation New Moon First Quarter Full Moon Third Quarter Duration
1200 3 jan 05:45 10 jan 20:21 17 jan 13:58 29d 16h 29m
1201 24 jan 22:42 2 feb 02:41 9 feb 08:33 15 feb 23:17 29d 17h 50m
1202 23 feb 16:32 2 mrt 20:57 9 mrt 18:47 16 mrt 10:34 29d 17h 56m
1203 24 mrt 10:28 1 apr 12:21 8 apr 04:35 15 apr 00:56 29d 16h 58m
1204 23 apr 04:25 30 apr 22:38 7 mei 12:45 14 mei 16:02 29d 15h 13m
1205 22 mei 19:38 30 mei 05:29 5 jun 21:12 13 jun 08:23 29d 13h 03m
1206 21 jun 08:41 28 jun 10:15 5 jul 06:44 13 jul 01:28 29d 10h 51m
1207 20 jul 19:32 27 jul 14:32 3 aug 17:58 11 aug 18:44 29d 9h 09m
1208 19 aug 04:41 25 aug 19:57 2 sep 07:22 10 sep 11:25 29d 8h 19m
1209 17 sep 13:00 24 sep 03:54 1 okt 23:05 10 okt 02:39 29d 8h 31m
1210 16 okt 21:31 23 okt 15:22 31 okt 15:49 8 nov 14:46 29d 9h 36m
1211 15 nov 06:07 22 nov 05:45 30 nov 10:29 8 dec 01:36 29d 11h 09m
1212 14 dec 17:16 22 dec 00:41 30 dec 04:28 29d 12h 44m
* 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.

2020 Moon Phases Calendar

jan 3:,  10:,  17:,  24:
feb 2:,    9:,  15:,  23:
mrt 2:,    9:,  16:,  24:
apr 1:,    8:,  15:,  23:,  30:
mei 7:,  14:,  22:,  30:
jun 5:,  13:,  21:,  28:
jul 5:,  13:,  20:,  27:
aug 3:,  11:,  19:,  25:
sep 2:,  10:,  17:,  24:
okt 1:,  10:,  16:,  23:,  31:
nov 8:,  15:,  22:,  30:
dec 8:,  14:,  22:,  30:

Moon Phases 2020 - Northern Hemisphere - 4K

Moon Phases 2020 - 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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