Moon Phases Calendar December 2020

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Interactive moon phases tool

Ready to explore other moon phases? This tool shows the current moon phase and allows you to shift the phases and see how the moon is illuminated at each phase.

Credit: NASA

«December 2020»
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
right
Tuesday, December 1st, 2020
Waning Gibbous
2
right
Wednesday, December 2nd, 2020
Waning Gibbous
3
right
Thursday, December 3rd, 2020
Waning Gibbous
4
right
Friday, December 4th, 2020
Waning Gibbous
5
right
Saturday, December 5th, 2020
Waning Gibbous
6
right
Sunday, December 6th, 2020
Waning Gibbous
7
right
Monday, December 7th, 2020
Last Quarter
8
right
Tuesday, December 8th, 2020
Last Quarter
9
left
right
Wednesday, December 9th, 2020
Waning Cresent
10
left
right
Thursday, December 10th, 2020
Waning Cresent
11
left
right
Friday, December 11th, 2020
Waning Cresent
12
left
right
Saturday, December 12th, 2020
Waning Cresent
13
left
right
Sunday, December 13th, 2020
Waning Cresent
14
left
right
Monday, December 14th, 2020
New Moon
15
left
right
Tuesday, December 15th, 2020
New Moon
16
left
right
Wednesday, December 16th, 2020
Waxing Cresent
17
left
right
Thursday, December 17th, 2020
Waxing Cresent
18
left
right
Friday, December 18th, 2020
Waxing Cresent
19
left
right
Saturday, December 19th, 2020
Waxing Cresent
20
left
right
Sunday, December 20th, 2020
Waxing Cresent
21
left
right
Monday, December 21st, 2020
Waxing Cresent
22
right
Tuesday, December 22nd, 2020
First Quarter
23
right
Wednesday, December 23rd, 2020
Waxing Gibbous
24
right
Thursday, December 24th, 2020
Waxing Gibbous
25
right
Friday, December 25th, 2020
Waxing Gibbous
26
right
Saturday, December 26th, 2020
Waxing Gibbous
27
right
Sunday, December 27th, 2020
Waxing Gibbous
28
right
Monday, December 28th, 2020
Waxing Gibbous
29
Tuesday, December 29th, 2020
Full Moon
30
Wednesday, December 30th, 2020
Full Moon
31
right
Thursday, December 31st, 2020
Waning Gibbous
Moon phase image

Moon phases software screen saver.

If you are interested in the phases of the moon or you like night sky screensavers, download the StarMessage screensaver for Microsoft Windows and Apple MacOS (including Mojave and Catalina).
The screensaver displays the moon in its current moon phase, reminds you about the upcoming full moon dates, shows you the names of the full moon, and does much more.

 

Download It's free

 

Diagram explaining the moon phases

This diagram shows the relative positions of the Sun, the Moon and earth and explains how the different moon phases appear.

The visible part of the moon is the part of the moon's surface that gets hit by the sunlight. The rest of the moon disc is almost invisible.

The moon phases are not caused by the shadow of the earth on to the moon. It is the moon's own shadow at the part of its surface that is not hit by the sunlight.

In other words, the visible "sunny" part is made of the places where there is "day" on the moon and the shadow part is where there is "night".

Moon phases diagram explained. Sun, Earth, Moon

Credit: NASA/JPL-Caltech.