When is the full moon in September 2026?

The full moon (the “Corn Moon”) is on September 26, 2026 at 16:49 UTC.

When is the new moon in September 2026?

The new moon is on September 11, 2026 at 03:27 UTC.

What do the percentages mean?

The illuminated fraction of the Moon’s visible disc at 12:00 UTC that day, computed from real ephemerides (astronomy-engine).

Space Time

Moon Phases: September 2026

The Corn Moon is full on September 26, 2026. Every day’s phase is below, computed from real ephemerides, and you can watch any night in 3D.

▶ Watch the Corn Moon in 3D Free · real ephemerides · no install

September 2026 phase calendar

Sun

Mon

Tue

Wed

Thu

Fri

Sat

🌖

80%

🌖

70%

🌖

60%

🌗

48%

🌘

37%

🌘

26%

🌘

17%

🌘

🌑

🌒

12%

🌒

20%

🌒

28%

🌒

37%

🌓

47%

🌓

56%

🌔

65%

🌔

74%

🌔

82%

🌔

89%

🌔

95%

🌔

98%

🌕

100%

🌕

99%

🌖

96%

🌖

90%

🌖

82%

Calendar days in UTC; the phase shown is at 12:00 UTC each day.

Exact times

🌗Last Quarter2026-09-04 07:51 UTC
🌑New Moon2026-09-11 03:27 UTC
🌓First Quarter2026-09-18 20:44 UTC
🌕Full Moon “Corn Moon”2026-09-26 16:49 UTC

Times in UTC (shown in your timezone when JavaScript is on).

← August 2026 All months October 2026 →

See it, don’t just read it

Space Time is a free in-browser planetarium. Jump the clock to any date above and the Moon shows that exact phase, or stand on the Moon itself and watch the Earth. Open the app.