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 2027 Moon Phase Calendar — 13-month

Gregorian dates: April 23, 2027 – May 20, 2027.

Switching keeps the reference date, May 1, 2027. Weekday headings follow the fixed calendar, not Gregorian weekdays. Each month has four complete weeks; Sol sits between June and July. The detail tables below keep their stated Gregorian date ranges.

May 2027 — International Fixed Calendar, Eastern Time. Gregorian date shown below each day.
SundayMondayTuesdayWednesdayThursdayFridaySaturday
Waning Gibbous, 90.1% illuminated90.1%April 23 Waning Gibbous, 83.5% illuminated83.5%April 24 Waning Gibbous, 75.8% illuminated75.8%April 25 Last Quarter, 67.2% illuminated67.2%April 26 Last Quarter, 58.1% illuminated58.1%April 27 Last Quarter, 48.7% illuminated48.7%April 28 Last Quarter 4:17 p.m. EDT Last Quarter, 39.2% illuminated39.2%April 29
Waning Crescent, 30% illuminated30%April 30 Waning Crescent, 21.4% illuminated21.4%May 1 Waning Crescent, 13.7% illuminated13.7%May 2 Waning Crescent, 7.4% illuminated7.4%May 3 New Moon, 2.8% illuminated2.8%May 4 New Moon, 0.5% illuminated0.5%May 5 New Moon, 0.6% illuminated0.6%May 6 New Moon 6:58 a.m. EDT
New Moon, 3.3% illuminated3.3%May 7 Waxing Crescent, 8.7% illuminated8.7%May 8 Waxing Crescent, 16.3% illuminated16.3%May 9 Waxing Crescent, 25.8% illuminated25.8%May 10 First Quarter, 36.6% illuminated36.6%May 11 First Quarter, 47.9% illuminated47.9%May 12 First Quarter, 59.2% illuminated59.2%May 13 First Quarter 12:43 a.m. EDT
First Quarter, 69.8% illuminated69.8%May 14 Waxing Gibbous, 79.3% illuminated79.3%May 15 Waxing Gibbous, 87.3% illuminated87.3%May 16 Waxing Gibbous, 93.5% illuminated93.5%May 17 Full Moon, 97.6% illuminated97.6%May 18 Full Moon, 99.6% illuminated99.6%May 19 Full Moon, 99.5% illuminated99.5%May 20 Full Moon 6:58 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.