🌙 Moon Phases September 2027: See all lunar phases for September 2027 including new moon, first quarter, full moon, and last quarter dates. Updated with accurate astronomical data.
About September 2027 moon phases
On September 15, 2027, September's full moon — the Harvest Moon — has the unique property that it rises only ~25 minutes later each successive evening near the September equinox, instead of the usual 50 minutes. This 'short rise lag' is a result of the shallow angle the Moon's orbit makes with the horizon in September — and it gave farmers extended evening light during the late-season harvest, before electric lighting.
Benefits
- ·Provides extended evening light for late-summer harvests
- ·Marks the Mid-Autumn Festival in East Asia
- ·Pairs with autumn-equinox alignment
- ·Lists Harvest Moon vs. Corn Moon distinction
- ·Best month for low-light landscape photography
How it works
the September 2027 full moon peaks on September 15, 2027. Throughout 2027, the moon completes 12-13 full cycles, each lasting 29.53 days. Distance from Earth varies between 356,500 km (perigee) and 406,700 km (apogee), creating supermoon and micromoon size differences of about 14%. Full-moon timing data on this page comes from the US Naval Observatory and NASA Goddard.
The Harvest Moon name applies specifically to the full moon closest to the September equinox — usually in September but occasionally in early October. In years when October's full moon is closer to the equinox, October takes the Harvest Moon name and September gets called the Corn Moon instead. The Mid-Autumn Festival in China and Vietnam falls on the 15th day of the 8th lunar month, almost always coinciding with this moon.
Who uses September 2027 moon phases
Photographers planning moonrise shots 2027, September-specific cultural and religious observers, astrology readers tracking September transits, fishermen and surfers reading tide cycles, and anyone curious about which full moon comes next.
Moon Phases September 2027
Moon phases for September 2027. Full Moon on September 15. New Moon on September 1. See daily moon illumination, lunar calendar, and all phases.
Related
Frequently asked questions
When is the full moon in September 2027?
The full moon in September 2027 falls on September 15, 2027. The exact peak time is shown in the major phases table above. This full moon is traditionally called the Harvest Moon in the Old Farmer's Almanac, a name traceable to Algonquian and other Indigenous American sources.
Why is September's full moon called the Harvest Moon?
The Harvest Moon is the full moon closest to the September equinox. Its claim to fame: the angle of the moon's orbit relative to the horizon is shallow, so it rises only ~25 minutes later each successive evening, giving farmers extended evening light during harvest.
When is the new moon in September 2027?
The new moon in September 2027 falls on September 1. New moons are not visible because the moon's lit side faces away from Earth. They are the best night-sky observing nights — without moonlight, fainter stars and meteors become visible.
Why do moon phases shift by date each month?
A complete lunar cycle (synodic month) is 29.53 days, slightly shorter than most calendar months. So each month's full moon falls about 0.5-2 days earlier in the calendar than the previous month's. Occasionally a calendar month contains two full moons — the second is called a "blue moon" (about once every 2.7 years).