Moon calendar for September 2026

By Maren Tremblay, Fatesight editor · Last updated September 30, 2026

Every day of September 2026 with the Moon's phase and how much of it is lit at 12:00 UTC. The new Moon, the quarters and the full Moon are marked on the day they happen in UTC.

The new Moon falls on September 11, with the Moon in Virgo. This month's full Moon is the Harvest Moon, on September 26, with the Moon in Aries.

New Moon, quarters and full Moon in September 2026

Last quarterFriday, September 4, 2026 at 07:51 UTC
New MoonFriday, September 11, 2026 at 03:27 UTC
First quarterFriday, September 18, 2026 at 20:44 UTC
Full MoonSaturday, September 26, 2026 at 16:49 UTC

Times are in Coordinated Universal Time (UTC), to the minute, and agree with NASA's published table of Moon phases to within two minutes. Where your browser allows, your own clock is shown under each.

The Moon on each day of September 2026
Sun	Mon	Tue	Wed	Thu	Fri	Sat
		September 1: Waning gibbous, 80% lit	September 2: Waning gibbous, 70% lit	September 3: Waning gibbous, 60% lit	September 4: Last quarter, 48% lit	September 5: Waning crescent, 37% lit
September 6: Waning crescent, 26% lit	September 7: Waning crescent, 17% lit	September 8: Waning crescent, 9% lit	September 9: Waning crescent, 3% lit	September 10: Waning crescent, 1% lit	September 11: New Moon, 0% lit	September 12: Waxing crescent, 2% lit
September 13: Waxing crescent, 6% lit	September 14: Waxing crescent, 12% lit	September 15: Waxing crescent, 20% lit	September 16: Waxing crescent, 28% lit	September 17: Waxing crescent, 37% lit	September 18: First quarter, 47% lit	September 19: Waxing gibbous, 56% lit
September 20: Waxing gibbous, 65% lit	September 21: Waxing gibbous, 74% lit	September 22: Waxing gibbous, 82% lit	September 23: Waxing gibbous, 89% lit	September 24: Waxing gibbous, 95% lit	September 25: Waxing gibbous, 98% lit	September 26: Full Moon, 100% lit
September 27: Waning gibbous, 99% lit	September 28: Waning gibbous, 96% lit	September 29: Waning gibbous, 90% lit	September 30: Waning gibbous, 83% lit

How is the Moon moving through September 2026?

At noon UTC the Moon is waxing, growing toward full, from September 11 to September 26 (16 days), and waning on the other 14. It is at least half lit on 15 days. Time between the principal phases: Last quarter September 4, new Moon September 11: 6 days 20 hours; New Moon September 11, first quarter September 18: 7 days 17 hours; First quarter September 18, full Moon September 26: 7 days 20 hours.

Which sign is the Moon in during September 2026?

Each stay to the minute, in UTC.

Aries: from the start of September 2026 until September 1 at 08:02 UTC.
Taurus: from September 1 at 08:02 UTC until September 3 at 11:48 UTC.
Gemini: from September 3 at 11:48 UTC until September 5 at 14:31 UTC.
Cancer: from September 5 at 14:31 UTC until September 7 at 16:50 UTC.
Leo: from September 7 at 16:50 UTC until September 9 at 19:36 UTC.
Virgo: from September 9 at 19:36 UTC until September 11 at 23:52 UTC.
Libra: from September 11 at 23:52 UTC until September 14 at 06:44 UTC.
Scorpio: from September 14 at 06:44 UTC until September 16 at 16:42 UTC.
Sagittarius: from September 16 at 16:42 UTC until September 19 at 04:55 UTC.
Capricorn: from September 19 at 04:55 UTC until September 21 at 17:15 UTC.
Aquarius: from September 21 at 17:15 UTC until September 24 at 03:24 UTC.
Pisces: from September 24 at 03:24 UTC until September 26 at 10:24 UTC.
Aries: from September 26 at 10:24 UTC until September 28 at 14:41 UTC.
Taurus: from September 28 at 14:41 UTC until September 30 at 17:27 UTC.
Gemini: from September 30 at 17:27 UTC until the end of September 2026.

Questions about the Moon in September 2026

When is the full Moon in September 2026?

The full Moon is on September 26 at 16:49 UTC with the Moon in Aries. It is the Harvest Moon, a name from the Old Farmer's Almanac tradition.

When is the new Moon in September 2026?

The new Moon is on September 11 at 03:27 UTC with the Moon in Virgo.

How much of the Moon is lit in September 2026?

At 12:00 UTC on September 1 the Moon is 80% lit (waning gibbous), on September 15 20% (waxing crescent) and on September 30 83% (waning gibbous). The dimmest day at noon UTC is September 11 at 0%, the brightest September 26 at 100%.

Does September 2026 have a Blue Moon or an eclipse?

No: the one full Moon is September 26, and nothing is eclipsed.