lumeries
Create poster

Moon Phases in September 2021

In September 2021, the Full Moon falls on September 21, 2021 and the New Moon on September 7, 2021. The First Quarter is on September 13, 2021, and the Last Quarter on September 29, 2021. Here is the complete lunar calendar for the month, all four quarter phases, and a direct link to every single day.

The full moon of September 2021 — or any other date — is available from Lumeries as a personalized poster with names and the date, as an instant download minutes after ordering (€9.90). Create a poster with your date →

Year overview 2021: every full moon and new moon →

Moon Phase Overview

Full MoonFull MoonSeptember 2199.4%
New MoonNew MoonSeptember 70.3%
First QuarterFirst QuarterSeptember 1345.6%
Last QuarterLast QuarterSeptember 2945.6%

Lunar Calendar September 2021

Mon
Tue
Wed
Thu
Fri
Sat
Sun
123456789101112131415161718192021222324252627282930

Tap any day to see the exact moon phase, moonrise, and a personalized poster for that date.

The Sky in September 2021

September 2021 brings the autumn shift to the Northern Hemisphere. Nights grow longer and clearer. The famous Harvest Moon and Hunter's Moon fall in this season — historically essential for farmers and hunters.

The full moon on September 21, 2021 traditionally bears the name "Harvest Moon". This name comes from old nature observations and makes the full moon in September 2021 especially significant.

Notable Days This Month

Autumn EquinoxSeptember 22

About the Moon Phases in September 2021

Every month, the Moon completes all eight phases — from New Moon through Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Last Quarter, to Waning Crescent. In September 2021, the Full Moon is on September 21, 2021 and the New Moon on September 7, 2021. The First Quarter is visible on September 13, 2021, the Last Quarter on September 29, 2021.

All moon phases for September 2021 are calculated astronomically using the SunCalc library. Times are referenced to Berlin (CET/CEST). Click any day in the calendar to see moonrise, zodiac sign, and a personalized moon poster for that exact date.

FAQ

When is the Full Moon in September 2021?
The Full Moon in September 2021 is on September 21, 2021. The Moon is 99.4% illuminated and sits opposite the Sun. The exact time and full astronomical data are on the daily detail page. Lumeries calculates full moon dates astronomically for every month between 1900 and 2100.
When is the New Moon in September 2021?
The New Moon in September 2021 is on September 7, 2021. On this day the Moon is between Earth and Sun and invisible to us — perfect conditions for stargazing thanks to the dark sky. Lumeries also calculates new moon dates for every month between 1900 and 2100.
How many moon phases are there in September 2021?
September 2021 has 4 primary phase events: Full Moon, New Moon, First Quarter, and Last Quarter. The Moon completes a full cycle every 29.5 days. The calendar above shows the exact phase for every single day.

Your Personalized Moon Poster

Pick a special day in September 2021 and create your unique moon poster — as a high-resolution image.

Create poster
Create poster
← Back to lunar calendar