🌑11
New Moon
Fri, 11
Illumination: 0%
Moon calendar for September 2026
Moon phases, new moon, full moon and quarters for September 2026. Below you will find a day-by-day calendar and the key phases of the month.
Month overview
🌖
Key phases and illumination
Average illumination
51%
Across the current month
Current month
September 2026
Moon calendar by month 2026
▾
Moon calendar by month 2026
Key phases of the month
🌓18
First quarter
Fri, 18
Illumination: 46%
🌕26
Full Moon
Sat, 26
Illumination: 100%
🌗4
Last quarter
Fri, 4
Illumination: 49%
Moon phases by day
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Tue
1
🌖
81%
Wed
2
🌖
72%
Thu
3
🌗
61%
Fri
4
🌗
49%
Sat
5
🌗
37%
Sun
6
🌘
26%
Mon
7
🌘
17%
Tue
8
🌘
9%
Wed
9
🌑
3%
Thu
10
🌑
1%
Fri
11
🌑
0%
Sat
12
🌑
2%
Sun
13
🌒
6%
Mon
14
🌒
12%
Tue
15
🌒
19%
Wed
16
🌒
28%
Thu
17
🌓
37%
Fri
18
🌓
46%
Sat
19
🌓
55%
Sun
20
🌓
64%
Mon
21
🌔
73%
Tue
22
🌔
81%
Wed
23
🌔
88%
Thu
24
🌔
94%
Fri
25
🌕
98%
Sat
26
🌕
100%
Sun
27
🌕
99%
Mon
28
🌕
97%
Tue
29
🌖
92%
Wed
30
🌖
84%
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Tue
1
🌖
Waning gibbous
Illumination: 81%
Wed
2
🌖
Waning gibbous
Illumination: 72%
Thu
3
🌗
Last quarter
Illumination: 61%
Fri
4
🌗
Last quarter
Illumination: 49%
Sat
5
🌗
Last quarter
Illumination: 37%
Sun
6
🌘
Waning crescent
Illumination: 26%
Mon
7
🌘
Waning crescent
Illumination: 17%
Tue
8
🌘
Waning crescent
Illumination: 9%
Wed
9
🌑
New Moon
Illumination: 3%
Thu
10
🌑
New Moon
Illumination: 1%
Fri
11
🌑
New Moon
Illumination: 0%
Sat
12
🌑
New Moon
Illumination: 2%
Sun
13
🌒
Waxing crescent
Illumination: 6%
Mon
14
🌒
Waxing crescent
Illumination: 12%
Tue
15
🌒
Waxing crescent
Illumination: 19%
Wed
16
🌒
Waxing crescent
Illumination: 28%
Thu
17
🌓
First quarter
Illumination: 37%
Fri
18
🌓
First quarter
Illumination: 46%
Sat
19
🌓
First quarter
Illumination: 55%
Sun
20
🌓
First quarter
Illumination: 64%
Mon
21
🌔
Waxing gibbous
Illumination: 73%
Tue
22
🌔
Waxing gibbous
Illumination: 81%
Wed
23
🌔
Waxing gibbous
Illumination: 88%
Thu
24
🌔
Waxing gibbous
Illumination: 94%
Fri
25
🌕
Full Moon
Illumination: 98%
Sat
26
🌕
Full Moon
Illumination: 100%
Sun
27
🌕
Full Moon
Illumination: 99%
Mon
28
🌕
Full Moon
Illumination: 97%
Tue
29
🌖
Waning gibbous
Illumination: 92%
Wed
30
🌖
Waning gibbous
Illumination: 84%
Moon forecast for this month
September 2026 is shaped by four key Moon phases. The new moon falls on day 11, the first quarter on day 18, the full moon on day 26, and the last quarter on day 4. During the first part of the month the lunar disk gains brightness, reaches its peak near the full moon and then gradually wanes.
In a broad astrological context, the month moves between Virgo and Libra. Use this calendar not as a prediction, but as a practical guide for sky watching, evening plans and understanding how bright the Moon will be on specific dates.
FAQ
What are Moon phases?▾
Moon phases are the visible changes in the illuminated part of the lunar disk as seen from Earth. They happen because the Moon changes position relative to Earth and the Sun.
What is the difference between new moon, full moon and quarters?▾
A new moon is when the illuminated side is almost invisible from Earth. A full moon is when the disk is brightest. The first and last quarters are intermediate phases.
What does the illumination percentage mean?▾
The illumination percentage shows how much of the visible lunar disk is lit by the Sun. The higher the value, the brighter the Moon appears at night.
How should I use the day-by-day moon calendar?▾
Use it to quickly check which Moon phase falls on a specific date, when the key phases occur and how bright the Moon will be on that night.