August 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.

May 2026 Moon Phase Calendar — Gregorian

Gregorian dates: May 1, 2026 – May 31, 2026.

Switching keeps the reference date, May 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 May 2026, Eastern Time. 13 month calendar date shown in the center of each day.
SundayMondayTuesdayWednesdayThursdayFridaySaturday
Full Moon, 99.8% illuminated99.8%May 9 Full Moon 1:23 p.m. EDT Full Moon, 98.3% illuminated98.3%May 10
Waning Gibbous, 95.1% illuminated95.1%May 11 Waning Gibbous, 90.3% illuminated90.3%May 12 Waning Gibbous, 84.1% illuminated84.1%May 13 Waning Gibbous, 76.7% illuminated76.7%May 14 Last Quarter, 68.2% illuminated68.2%May 15 Last Quarter, 58.8% illuminated58.8%May 16 Last Quarter, 49% illuminated49%May 17 Last Quarter 5:10 p.m. EDT
Last Quarter, 38.8% illuminated38.8%May 18 Waning Crescent, 28.9% illuminated28.9%May 19 Waning Crescent, 19.5% illuminated19.5%May 20 Waning Crescent, 11.4% illuminated11.4%May 21 Waning Crescent, 5.1% illuminated5.1%May 22 New Moon, 1.2% illuminated1.2%May 23 New Moon, 0.2% illuminated0.2%May 24 New Moon 4:00 p.m. EDT
New Moon, 2.3% illuminated2.3%May 25 Waxing Crescent, 7.2% illuminated7.2%May 26 Waxing Crescent, 14.7% illuminated14.7%May 27 Waxing Crescent, 23.9% illuminated23.9%May 28 First Quarter, 34.3% illuminated34.3%Jun 1 First Quarter, 45.1% illuminated45.1%Jun 2 First Quarter, 55.8% illuminated55.8%Jun 3 First Quarter 7:10 a.m. EDT
First Quarter, 66% illuminated66%Jun 4 Waxing Gibbous, 75.2% illuminated75.2%Jun 5 Waxing Gibbous, 83.2% illuminated83.2%Jun 6 Waxing Gibbous, 89.8% illuminated89.8%Jun 7 Waxing Gibbous, 94.8% illuminated94.8%Jun 8 Full Moon, 98.1% illuminated98.1%Jun 9 Full Moon, 99.7% illuminated99.7%Jun 10
Full Moon, 99.5% illuminated99.5%Jun 11 Full Moon 4:45 a.m. EDT

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.

August 2027 Moon Phases — Exact Times

Principal lunar phases in August 2027, with Eastern and UTC civil dates
PhaseDateTime (ET)Time (UTC)13 month date
New Moon6:05 a.m. EDT
10:05 a.m. UTC		July 18, 2027
First Quarter12:54 a.m. EDT
4:54 a.m. UTC		July 25, 2027
Full Moon3:28 a.m. EDT
7:28 a.m. UTC		August 5, 2027
Last Quarter10:27 p.m. EDT
2:27 a.m. UTC		August 12, 2027
New Moon1:41 p.m. EDT
5:41 p.m. UTC		August 19, 2027

Special events and calculation notes

  • : Total solar eclipse (NASA GSFC)
  • : Penumbral lunar eclipse (NASA GSFC)

Eclipse classifications are from NASA GSFC. On this site, “supermoon” means a full moon with a computed geocentric distance of 360,000 km or less.

Daily Moon Phase, Illumination, and Moonrise

Daily lunar conditions in August 2027; phase and illumination sampled at 8:00 p.m. Eastern
DatePhase at 8 p.m. ETIlluminationNYC moonrise (ET / UTC)13 month date
New Moon, 0.3% illuminatedNew Moon0.3%, 4:40 a.m. EDT
, 8:40 a.m. UTC		July 17, 2027
New Moon, 0.5% illuminatedNew Moon0.5%, 6:02 a.m. EDT
, 10:02 a.m. UTC		July 18, 2027
New Moon, 3.8% illuminatedNew Moon3.8%, 7:22 a.m. EDT
, 11:22 a.m. UTC		July 19, 2027
Waxing Crescent, 9.8% illuminatedWaxing Crescent9.8%, 8:40 a.m. EDT
, 12:40 p.m. UTC		July 20, 2027
Waxing Crescent, 17.8% illuminatedWaxing Crescent17.8%, 9:55 a.m. EDT
, 1:55 p.m. UTC		July 21, 2027
Waxing Crescent, 27.3% illuminatedWaxing Crescent27.3%, 11:07 a.m. EDT
, 3:07 p.m. UTC		July 22, 2027
First Quarter, 37.5% illuminatedFirst Quarter37.5%, 12:19 p.m. EDT
, 4:19 p.m. UTC		July 23, 2027
First Quarter, 48% illuminatedFirst Quarter48%, 1:29 p.m. EDT
, 5:29 p.m. UTC		July 24, 2027
First Quarter, 58.2% illuminatedFirst Quarter58.2%, 2:36 p.m. EDT
, 6:36 p.m. UTC		July 25, 2027
First Quarter, 67.8% illuminatedFirst Quarter67.8%, 3:40 p.m. EDT
, 7:40 p.m. UTC		July 26, 2027
Waxing Gibbous, 76.6% illuminatedWaxing Gibbous76.6%, 4:37 p.m. EDT
, 8:37 p.m. UTC		July 27, 2027
Waxing Gibbous, 84.2% illuminatedWaxing Gibbous84.2%, 5:27 p.m. EDT
, 9:27 p.m. UTC		July 28, 2027
Waxing Gibbous, 90.5% illuminatedWaxing Gibbous90.5%, 6:09 p.m. EDT
, 10:09 p.m. UTC		August 1, 2027
Waxing Gibbous, 95.3% illuminatedWaxing Gibbous95.3%, 6:44 p.m. EDT
, 10:44 p.m. UTC		August 2, 2027
Full Moon, 98.5% illuminatedFull Moon98.5%, 7:13 p.m. EDT
, 11:13 p.m. UTC		August 3, 2027
Full Moon, 99.9% illuminatedFull Moon99.9%, 7:38 p.m. EDT
, 11:38 p.m. UTC		August 4, 2027
Full Moon, 99.5% illuminatedFull Moon99.5%, 8:00 p.m. EDT
, 12:00 a.m. UTC		August 5, 2027
Full Moon, 97.4% illuminatedFull Moon97.4%, 8:21 p.m. EDT
, 12:21 a.m. UTC		August 6, 2027
Waning Gibbous, 93.4% illuminatedWaning Gibbous93.4%, 8:41 p.m. EDT
, 12:41 a.m. UTC		August 7, 2027
Waning Gibbous, 87.7% illuminatedWaning Gibbous87.7%, 9:03 p.m. EDT
, 1:03 a.m. UTC		August 8, 2027
Waning Gibbous, 80.4% illuminatedWaning Gibbous80.4%, 9:26 p.m. EDT
, 1:26 a.m. UTC		August 9, 2027
Waning Gibbous, 71.7% illuminatedWaning Gibbous71.7%, 9:53 p.m. EDT
, 1:53 a.m. UTC		August 10, 2027
Last Quarter, 61.9% illuminatedLast Quarter61.9%, 10:26 p.m. EDT
, 2:26 a.m. UTC		August 11, 2027
Last Quarter, 51.3% illuminatedLast Quarter51.3%, 11:06 p.m. EDT
, 3:06 a.m. UTC		August 12, 2027
Last Quarter, 40.3% illuminatedLast Quarter40.3%, 11:58 p.m. EDT
, 3:58 a.m. UTC		August 13, 2027
Waning Crescent, 29.4% illuminatedWaning Crescent29.4%No moonrise on this Eastern calendar dateAugust 14, 2027
Waning Crescent, 19.4% illuminatedWaning Crescent19.4%, 1:01 a.m. EDT
, 5:01 a.m. UTC		August 15, 2027
Waning Crescent, 10.9% illuminatedWaning Crescent10.9%, 2:13 a.m. EDT
, 6:13 a.m. UTC		August 16, 2027
Waning Crescent, 4.5% illuminatedWaning Crescent4.5%, 3:32 a.m. EDT
, 7:32 a.m. UTC		August 17, 2027
New Moon, 0.8% illuminatedNew Moon0.8%, 4:52 a.m. EDT
, 8:52 a.m. UTC		August 18, 2027
New Moon, 0.2% illuminatedNew Moon0.2%, 6:11 a.m. EDT
, 10:11 a.m. UTC		August 19, 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.