Moon Phases Calendar December 2040

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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 2040»
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
left
right
Saturday, December 1st, 2040
Waning Cresent
2
left
right
Sunday, December 2nd, 2040
Waning Cresent
3
left
right
Monday, December 3rd, 2040
New Moon
4
left
right
Tuesday, December 4th, 2040
New Moon
5
left
right
Wednesday, December 5th, 2040
Waxing Cresent
6
left
right
Thursday, December 6th, 2040
Waxing Cresent
7
left
right
Friday, December 7th, 2040
Waxing Cresent
8
left
right
Saturday, December 8th, 2040
Waxing Cresent
9
left
right
Sunday, December 9th, 2040
Waxing Cresent
10
left
right
Monday, December 10th, 2040
Waxing Cresent
11
right
Tuesday, December 11th, 2040
First Quarter
12
right
Wednesday, December 12th, 2040
Waxing Gibbous
13
right
Thursday, December 13th, 2040
Waxing Gibbous
14
right
Friday, December 14th, 2040
Waxing Gibbous
15
right
Saturday, December 15th, 2040
Waxing Gibbous
16
right
Sunday, December 16th, 2040
Waxing Gibbous
17
right
Monday, December 17th, 2040
Waxing Gibbous
18
Tuesday, December 18th, 2040
Full Moon
19
Wednesday, December 19th, 2040
Full Moon
20
right
Thursday, December 20th, 2040
Waning Gibbous
21
right
Friday, December 21st, 2040
Waning Gibbous
22
right
Saturday, December 22nd, 2040
Waning Gibbous
23
right
Sunday, December 23rd, 2040
Waning Gibbous
24
right
Monday, December 24th, 2040
Waning Gibbous
25
right
Tuesday, December 25th, 2040
Waning Gibbous
26
right
Wednesday, December 26th, 2040
Last Quarter
27
right
Thursday, December 27th, 2040
Last Quarter
28
left
right
Friday, December 28th, 2040
Waning Cresent
29
left
right
Saturday, December 29th, 2040
Waning Cresent
30
left
right
Sunday, December 30th, 2040
Waning Cresent
31
left
right
Monday, December 31st, 2040
Waning Cresent
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.