Moon Phases Calendar August 2021

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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

«August 2021»
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
right
Sunday, August 1st, 2021
Last Quarter
2
right
Monday, August 2nd, 2021
Last Quarter
3
left
right
Tuesday, August 3rd, 2021
Waning Cresent
4
left
right
Wednesday, August 4th, 2021
Waning Cresent
5
left
right
Thursday, August 5th, 2021
Waning Cresent
6
left
right
Friday, August 6th, 2021
Waning Cresent
7
left
right
Saturday, August 7th, 2021
Waning Cresent
8
left
right
Sunday, August 8th, 2021
New Moon
9
left
right
Monday, August 9th, 2021
Waxing Cresent
10
left
right
Tuesday, August 10th, 2021
Waxing Cresent
11
left
right
Wednesday, August 11th, 2021
Waxing Cresent
12
left
right
Thursday, August 12th, 2021
Waxing Cresent
13
left
right
Friday, August 13th, 2021
Waxing Cresent
14
left
right
Saturday, August 14th, 2021
Waxing Cresent
15
right
Sunday, August 15th, 2021
First Quarter
16
right
Monday, August 16th, 2021
First Quarter
17
right
Tuesday, August 17th, 2021
Waxing Gibbous
18
right
Wednesday, August 18th, 2021
Waxing Gibbous
19
right
Thursday, August 19th, 2021
Waxing Gibbous
20
right
Friday, August 20th, 2021
Waxing Gibbous
21
right
Saturday, August 21st, 2021
Waxing Gibbous
22
right
Sunday, August 22nd, 2021
Waxing Gibbous
23
Monday, August 23rd, 2021
Full Moon
24
right
Tuesday, August 24th, 2021
Waning Gibbous
25
right
Wednesday, August 25th, 2021
Waning Gibbous
26
right
Thursday, August 26th, 2021
Waning Gibbous
27
right
Friday, August 27th, 2021
Waning Gibbous
28
right
Saturday, August 28th, 2021
Waning Gibbous
29
right
Sunday, August 29th, 2021
Waning Gibbous
30
right
Monday, August 30th, 2021
Last Quarter
31
right
Tuesday, August 31st, 2021
Last Quarter
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.