Moon Phases Calendar September 2023

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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

«September 2023»
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
right
Friday, September 1st, 2023
Waning Gibbous
2
right
Saturday, September 2nd, 2023
Waning Gibbous
3
right
Sunday, September 3rd, 2023
Waning Gibbous
4
right
Monday, September 4th, 2023
Waning Gibbous
5
right
Tuesday, September 5th, 2023
Waning Gibbous
6
right
Wednesday, September 6th, 2023
Waning Gibbous
7
right
Thursday, September 7th, 2023
Last Quarter
8
right
Friday, September 8th, 2023
Last Quarter
9
left
right
Saturday, September 9th, 2023
Waning Cresent
10
left
right
Sunday, September 10th, 2023
Waning Cresent
11
left
right
Monday, September 11th, 2023
Waning Cresent
12
left
right
Tuesday, September 12th, 2023
Waning Cresent
13
left
right
Wednesday, September 13th, 2023
Waning Cresent
14
left
right
Thursday, September 14th, 2023
New Moon
15
left
right
Friday, September 15th, 2023
New Moon
16
left
right
Saturday, September 16th, 2023
Waxing Cresent
17
left
right
Sunday, September 17th, 2023
Waxing Cresent
18
left
right
Monday, September 18th, 2023
Waxing Cresent
19
left
right
Tuesday, September 19th, 2023
Waxing Cresent
20
left
right
Wednesday, September 20th, 2023
Waxing Cresent
21
left
right
Thursday, September 21st, 2023
Waxing Cresent
22
right
Friday, September 22nd, 2023
First Quarter
23
right
Saturday, September 23rd, 2023
Waxing Gibbous
24
right
Sunday, September 24th, 2023
Waxing Gibbous
25
right
Monday, September 25th, 2023
Waxing Gibbous
26
right
Tuesday, September 26th, 2023
Waxing Gibbous
27
right
Wednesday, September 27th, 2023
Waxing Gibbous
28
right
Thursday, September 28th, 2023
Waxing Gibbous
29
Friday, September 29th, 2023
Full Moon
30
Saturday, September 30th, 2023
Full Moon
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.