September 2026 Moon Phase Calendar

Updated · Daily moon data sampled at 8:00 p.m. Eastern Time (UTC shown where relevant)

The daily phase and illumination below are sampled at 8:00 p.m. Eastern Time. Principal phases are exact astronomical instants. Moonrise is for New York City and may occur on a different local date elsewhere.

September 2026 Moon Phase Calendar — Gregorian

Gregorian dates: September 1, 2026 – September 30, 2026.

Switching keeps the reference date, September 1, 2026. Weekday headings follow the Gregorian calendar. 13-month dates appear below each day. The detail tables below keep their stated Gregorian date ranges.

Moon phases for September 2026, Eastern Time. 13 month calendar date shown in the center of each day.
SundayMondayTuesdayWednesdayThursdayFridaySaturday
Waning Gibbous, 75.3% illuminated75.3%Aug 20 Last Quarter, 65% illuminated65%Aug 21 Last Quarter, 53.9% illuminated53.9%Aug 22 Last Quarter, 42.4% illuminated42.4%Aug 23 Last Quarter 3:51 a.m. EDT Last Quarter, 31.3% illuminated31.3%Aug 24
Waning Crescent, 21.1% illuminated21.1%Aug 25 Waning Crescent, 12.4% illuminated12.4%Aug 26 Waning Crescent, 5.8% illuminated5.8%Aug 27 New Moon, 1.7% illuminated1.7%Aug 28 New Moon, 0% illuminated0%Sep 1 New Moon 11:26 p.m. EDT New Moon, 0.9% illuminated0.9%Sep 2 New Moon, 4.1% illuminated4.1%Sep 3
Waxing Crescent, 9.3% illuminated9.3%Sep 4 Waxing Crescent, 16% illuminated16%Sep 5 Waxing Crescent, 24% illuminated24%Sep 6 First Quarter, 32.7% illuminated32.7%Sep 7 First Quarter, 42% illuminated42%Sep 8 First Quarter, 51.4% illuminated51.4%Sep 9 First Quarter 4:43 p.m. EDT First Quarter, 60.8% illuminated60.8%Sep 10
Waxing Gibbous, 69.9% illuminated69.9%Sep 11 Waxing Gibbous, 78.3% illuminated78.3%Sep 12 Waxing Gibbous, 85.8% illuminated85.8%Sep 13 Waxing Gibbous, 92.1% illuminated92.1%Sep 14 Full Moon, 96.7% illuminated96.7%Sep 15 Full Moon, 99.4% illuminated99.4%Sep 16 Full Moon, 99.8% illuminated99.8%Sep 17 Full Moon 12:48 p.m. EDT
Full Moon, 97.8% illuminated97.8%Sep 18 Waning Gibbous, 93.4% illuminated93.4%Sep 19 Waning Gibbous, 86.6% illuminated86.6%Sep 20 Waning Gibbous, 77.9% illuminated77.9%Sep 21

Daily phase names group the cycle into eight broad phase sectors, using progress between exact astronomical events. They describe the 8 p.m. Eastern sample, not the instant of a new moon, quarter moon, or full moon. The tables list those exact principal-phase instants separately.

September 2026 Moon Phases — Exact Times

Principal lunar phases in September 2026, with Eastern and UTC civil dates
PhaseDateTime (ET)Time (UTC)13 month date
Last Quarter3:51 a.m. EDT
7:51 a.m. UTC		August 23, 2026
New Moon11:26 p.m. EDT
3:26 a.m. UTC		September 1, 2026
First Quarter4:43 p.m. EDT
8:43 p.m. UTC		September 9, 2026
Full Moon12:48 p.m. EDT
4:48 p.m. UTC		September 17, 2026

Daily Moon Phase, Illumination, and Moonrise

Daily lunar conditions in September 2026; phase and illumination sampled at 8:00 p.m. Eastern
DatePhase at 8 p.m. ETIlluminationNYC moonrise (ET / UTC)13 month date
Waning Gibbous, 75.3% illuminatedWaning Gibbous75.3%, 9:28 p.m. EDT
, 1:28 a.m. UTC		August 20, 2026
Last Quarter, 65% illuminatedLast Quarter65%, 10:03 p.m. EDT
, 2:03 a.m. UTC		August 21, 2026
Last Quarter, 53.9% illuminatedLast Quarter53.9%, 10:49 p.m. EDT
, 2:49 a.m. UTC		August 22, 2026
Last Quarter, 42.4% illuminatedLast Quarter42.4%, 11:45 p.m. EDT
, 3:45 a.m. UTC		August 23, 2026
Last Quarter, 31.3% illuminatedLast Quarter31.3%No moonrise on this Eastern calendar dateAugust 24, 2026
Waning Crescent, 21.1% illuminatedWaning Crescent21.1%, 12:52 a.m. EDT
, 4:52 a.m. UTC		August 25, 2026
Waning Crescent, 12.4% illuminatedWaning Crescent12.4%, 2:07 a.m. EDT
, 6:07 a.m. UTC		August 26, 2026
Waning Crescent, 5.8% illuminatedWaning Crescent5.8%, 3:24 a.m. EDT
, 7:24 a.m. UTC		August 27, 2026
New Moon, 1.7% illuminatedNew Moon1.7%, 4:40 a.m. EDT
, 8:40 a.m. UTC		August 28, 2026
New Moon, 0% illuminatedNew Moon0%, 5:53 a.m. EDT
, 9:53 a.m. UTC		September 1, 2026
New Moon, 0.9% illuminatedNew Moon0.9%, 7:04 a.m. EDT
, 11:04 a.m. UTC		September 2, 2026
New Moon, 4.1% illuminatedNew Moon4.1%, 8:13 a.m. EDT
, 12:13 p.m. UTC		September 3, 2026
Waxing Crescent, 9.3% illuminatedWaxing Crescent9.3%, 9:21 a.m. EDT
, 1:21 p.m. UTC		September 4, 2026
Waxing Crescent, 16% illuminatedWaxing Crescent16%, 10:28 a.m. EDT
, 2:28 p.m. UTC		September 5, 2026
Waxing Crescent, 24% illuminatedWaxing Crescent24%, 11:35 a.m. EDT
, 3:35 p.m. UTC		September 6, 2026
First Quarter, 32.7% illuminatedFirst Quarter32.7%, 12:39 p.m. EDT
, 4:39 p.m. UTC		September 7, 2026
First Quarter, 42% illuminatedFirst Quarter42%, 1:40 p.m. EDT
, 5:40 p.m. UTC		September 8, 2026
First Quarter, 51.4% illuminatedFirst Quarter51.4%, 2:35 p.m. EDT
, 6:35 p.m. UTC		September 9, 2026
First Quarter, 60.8% illuminatedFirst Quarter60.8%, 3:23 p.m. EDT
, 7:23 p.m. UTC		September 10, 2026
Waxing Gibbous, 69.9% illuminatedWaxing Gibbous69.9%, 4:03 p.m. EDT
, 8:03 p.m. UTC		September 11, 2026
Waxing Gibbous, 78.3% illuminatedWaxing Gibbous78.3%, 4:37 p.m. EDT
, 8:37 p.m. UTC		September 12, 2026
Waxing Gibbous, 85.8% illuminatedWaxing Gibbous85.8%, 5:05 p.m. EDT
, 9:05 p.m. UTC		September 13, 2026
Waxing Gibbous, 92.1% illuminatedWaxing Gibbous92.1%, 5:30 p.m. EDT
, 9:30 p.m. UTC		September 14, 2026
Full Moon, 96.7% illuminatedFull Moon96.7%, 5:53 p.m. EDT
, 9:53 p.m. UTC		September 15, 2026
Full Moon, 99.4% illuminatedFull Moon99.4%, 6:15 p.m. EDT
, 10:15 p.m. UTC		September 16, 2026
Full Moon, 99.8% illuminatedFull Moon99.8%, 6:37 p.m. EDT
, 10:37 p.m. UTC		September 17, 2026
Full Moon, 97.8% illuminatedFull Moon97.8%, 7:02 p.m. EDT
, 11:02 p.m. UTC		September 18, 2026
Waning Gibbous, 93.4% illuminatedWaning Gibbous93.4%, 7:30 p.m. EDT
, 11:30 p.m. UTC		September 19, 2026
Waning Gibbous, 86.6% illuminatedWaning Gibbous86.6%, 8:04 p.m. EDT
, 12:04 a.m. UTC		September 20, 2026
Waning Gibbous, 77.9% illuminatedWaning Gibbous77.9%, 8:47 p.m. EDT
, 12:47 a.m. UTC		September 21, 2026

“No moonrise” means no rise occurs during that midnight-to-midnight Eastern calendar date at the New York City observer location; it does not mean the moon never rises.