December 2027 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.

December 2027 Moon Phases — Exact Times

Principal lunar phases in December 2027, with Eastern and UTC civil dates
PhaseDateTime (ET)Time (UTC)13 month date
First Quarter12:22 a.m. EST
5:22 a.m. UTC		December 4, 2027
Full Moon11:08 a.m. EST
4:08 p.m. UTC		December 11, 2027
Last Quarter4:10 a.m. EST
9:10 a.m. UTC		December 18, 2027
New Moon3:12 p.m. EST
8:12 p.m. UTC		December 25, 2027

Daily Moon Phase, Illumination, and Moonrise

Daily lunar conditions in December 2027; phase and illumination sampled at 8:00 p.m. Eastern
DatePhase at 8 p.m. ETIlluminationNYC moonrise (ET / UTC)13 month date
Waxing Crescent, 14.5% illuminatedWaxing Crescent14.5%, 10:10 a.m. EST
, 3:10 p.m. UTC		November 27, 2027
Waxing Crescent, 21.8% illuminatedWaxing Crescent21.8%, 10:43 a.m. EST
, 3:43 p.m. UTC		November 28, 2027
Waxing Crescent, 30.1% illuminatedWaxing Crescent30.1%, 11:10 a.m. EST
, 4:10 p.m. UTC		December 1, 2027
First Quarter, 39% illuminatedFirst Quarter39%, 11:34 a.m. EST
, 4:34 p.m. UTC		December 2, 2027
First Quarter, 48.4% illuminatedFirst Quarter48.4%, 11:56 a.m. EST
, 4:56 p.m. UTC		December 3, 2027
First Quarter, 57.9% illuminatedFirst Quarter57.9%, 12:17 p.m. EST
, 5:17 p.m. UTC		December 4, 2027
First Quarter, 67.3% illuminatedFirst Quarter67.3%, 12:38 p.m. EST
, 5:38 p.m. UTC		December 5, 2027
Waxing Gibbous, 76.3% illuminatedWaxing Gibbous76.3%, 1:01 p.m. EST
, 6:01 p.m. UTC		December 6, 2027
Waxing Gibbous, 84.4% illuminatedWaxing Gibbous84.4%, 1:27 p.m. EST
, 6:27 p.m. UTC		December 7, 2027
Waxing Gibbous, 91.3% illuminatedWaxing Gibbous91.3%, 1:58 p.m. EST
, 6:58 p.m. UTC		December 8, 2027
Full Moon, 96.4% illuminatedFull Moon96.4%, 2:36 p.m. EST
, 7:36 p.m. UTC		December 9, 2027
Full Moon, 99.3% illuminatedFull Moon99.3%, 3:25 p.m. EST
, 8:25 p.m. UTC		December 10, 2027
Full Moon, 99.7% illuminatedFull Moon99.7%, 4:25 p.m. EST
, 9:25 p.m. UTC		December 11, 2027
Full Moon, 97.4% illuminatedFull Moon97.4%, 5:35 p.m. EST
, 10:35 p.m. UTC		December 12, 2027
Waning Gibbous, 92.4% illuminatedWaning Gibbous92.4%, 6:51 p.m. EST
, 11:51 p.m. UTC		December 13, 2027
Waning Gibbous, 85% illuminatedWaning Gibbous85%, 8:09 p.m. EST
, 1:09 a.m. UTC		December 14, 2027
Waning Gibbous, 75.7% illuminatedWaning Gibbous75.7%, 9:25 p.m. EST
, 2:25 a.m. UTC		December 15, 2027
Last Quarter, 65.1% illuminatedLast Quarter65.1%, 10:38 p.m. EST
, 3:38 a.m. UTC		December 16, 2027
Last Quarter, 54% illuminatedLast Quarter54%, 11:50 p.m. EST
, 4:50 a.m. UTC		December 17, 2027
Last Quarter, 42.8% illuminatedLast Quarter42.8%No moonrise on this Eastern calendar dateDecember 18, 2027
Last Quarter, 32.2% illuminatedLast Quarter32.2%, 1:00 a.m. EST
, 6:00 a.m. UTC		December 19, 2027
Waning Crescent, 22.6% illuminatedWaning Crescent22.6%, 2:11 a.m. EST
, 7:11 a.m. UTC		December 20, 2027
Waning Crescent, 14.4% illuminatedWaning Crescent14.4%, 3:20 a.m. EST
, 8:20 a.m. UTC		December 21, 2027
Waning Crescent, 7.9% illuminatedWaning Crescent7.9%, 4:29 a.m. EST
, 9:29 a.m. UTC		December 22, 2027
New Moon, 3.3% illuminatedNew Moon3.3%, 5:34 a.m. EST
, 10:34 a.m. UTC		December 23, 2027
New Moon, 0.7% illuminatedNew Moon0.7%, 6:33 a.m. EST
, 11:33 a.m. UTC		December 24, 2027
New Moon, 0.1% illuminatedNew Moon0.1%, 7:25 a.m. EST
, 12:25 p.m. UTC		December 25, 2027
New Moon, 1.4% illuminatedNew Moon1.4%, 8:07 a.m. EST
, 1:07 p.m. UTC		December 26, 2027
Waxing Crescent, 4.5% illuminatedWaxing Crescent4.5%, 8:43 a.m. EST
, 1:43 p.m. UTC		December 27, 2027
Waxing Crescent, 9.2% illuminatedWaxing Crescent9.2%, 9:12 a.m. EST
, 2:12 p.m. UTC		December 28, 2027
Waxing Crescent, 15.4% illuminatedWaxing Crescent15.4%, 9:37 a.m. EST
, 2:37 p.m. UTC		Year Day 2027

“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.