August 2027 Moon Phase Calendar

Updated October 3, 2026 · 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 — 13-month

Gregorian dates: April 23, 2026 – May 20, 2026.

Switching keeps the reference date, April 23, 2026. 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 2026 — International Fixed Calendar, Eastern Time. Gregorian date shown below each day.

Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
148.9%April 23 First Quarter 10:31 p.m. EDT	259.9%April 24	370.1%April 25	479.2%April 26	586.9%April 27	692.9%April 28	797.1%April 29
899.4%April 30	999.8%May 1 Full Moon 1:23 p.m. EDT	1098.3%May 2	1195.1%May 3	1290.3%May 4	1384.1%May 5	1476.7%May 6
1568.2%May 7	1658.8%May 8	1749%May 9 Last Quarter 5:10 p.m. EDT	1838.8%May 10	1928.9%May 11	2019.5%May 12	2111.4%May 13
225.1%May 14	231.2%May 15	240.2%May 16 New Moon 4:00 p.m. EDT	252.3%May 17	267.2%May 18	2714.7%May 19	2823.9%May 20

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

Special events and calculation notes

• August 2, 2027: Total solar eclipse (NASA GSFC)
• August 17, 2027: 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

Date	Phase at 8 p.m. ET	Illumination	NYC moonrise (ET / UTC)	13 month date
August 1, 2027	New Moon	0.3%	August 1, 2027, 4:40 a.m. EDT August 1, 2027, 8:40 a.m. UTC	July 17, 2027
August 2, 2027	New Moon	0.5%	August 2, 2027, 6:02 a.m. EDT August 2, 2027, 10:02 a.m. UTC	July 18, 2027
August 3, 2027	New Moon	3.8%	August 3, 2027, 7:22 a.m. EDT August 3, 2027, 11:22 a.m. UTC	July 19, 2027
August 4, 2027	Waxing Crescent	9.8%	August 4, 2027, 8:40 a.m. EDT August 4, 2027, 12:40 p.m. UTC	July 20, 2027
August 5, 2027	Waxing Crescent	17.8%	August 5, 2027, 9:55 a.m. EDT August 5, 2027, 1:55 p.m. UTC	July 21, 2027
August 6, 2027	Waxing Crescent	27.3%	August 6, 2027, 11:07 a.m. EDT August 6, 2027, 3:07 p.m. UTC	July 22, 2027
August 7, 2027	First Quarter	37.5%	August 7, 2027, 12:19 p.m. EDT August 7, 2027, 4:19 p.m. UTC	July 23, 2027
August 8, 2027	First Quarter	48%	August 8, 2027, 1:29 p.m. EDT August 8, 2027, 5:29 p.m. UTC	July 24, 2027
August 9, 2027	First Quarter	58.2%	August 9, 2027, 2:36 p.m. EDT August 9, 2027, 6:36 p.m. UTC	July 25, 2027
August 10, 2027	First Quarter	67.8%	August 10, 2027, 3:40 p.m. EDT August 10, 2027, 7:40 p.m. UTC	July 26, 2027
August 11, 2027	Waxing Gibbous	76.6%	August 11, 2027, 4:37 p.m. EDT August 11, 2027, 8:37 p.m. UTC	July 27, 2027
August 12, 2027	Waxing Gibbous	84.2%	August 12, 2027, 5:27 p.m. EDT August 12, 2027, 9:27 p.m. UTC	July 28, 2027
August 13, 2027	Waxing Gibbous	90.5%	August 13, 2027, 6:09 p.m. EDT August 13, 2027, 10:09 p.m. UTC	August 1, 2027
August 14, 2027	Waxing Gibbous	95.3%	August 14, 2027, 6:44 p.m. EDT August 14, 2027, 10:44 p.m. UTC	August 2, 2027
August 15, 2027	Full Moon	98.5%	August 15, 2027, 7:13 p.m. EDT August 15, 2027, 11:13 p.m. UTC	August 3, 2027
August 16, 2027	Full Moon	99.9%	August 16, 2027, 7:38 p.m. EDT August 16, 2027, 11:38 p.m. UTC	August 4, 2027
August 17, 2027	Full Moon	99.5%	August 17, 2027, 8:00 p.m. EDT August 18, 2027, 12:00 a.m. UTC	August 5, 2027
August 18, 2027	Full Moon	97.4%	August 18, 2027, 8:21 p.m. EDT August 19, 2027, 12:21 a.m. UTC	August 6, 2027
August 19, 2027	Waning Gibbous	93.4%	August 19, 2027, 8:41 p.m. EDT August 20, 2027, 12:41 a.m. UTC	August 7, 2027
August 20, 2027	Waning Gibbous	87.7%	August 20, 2027, 9:03 p.m. EDT August 21, 2027, 1:03 a.m. UTC	August 8, 2027
August 21, 2027	Waning Gibbous	80.4%	August 21, 2027, 9:26 p.m. EDT August 22, 2027, 1:26 a.m. UTC	August 9, 2027
August 22, 2027	Waning Gibbous	71.7%	August 22, 2027, 9:53 p.m. EDT August 23, 2027, 1:53 a.m. UTC	August 10, 2027
August 23, 2027	Last Quarter	61.9%	August 23, 2027, 10:26 p.m. EDT August 24, 2027, 2:26 a.m. UTC	August 11, 2027
August 24, 2027	Last Quarter	51.3%	August 24, 2027, 11:06 p.m. EDT August 25, 2027, 3:06 a.m. UTC	August 12, 2027
August 25, 2027	Last Quarter	40.3%	August 25, 2027, 11:58 p.m. EDT August 26, 2027, 3:58 a.m. UTC	August 13, 2027
August 26, 2027	Waning Crescent	29.4%	No moonrise on this Eastern calendar date	August 14, 2027
August 27, 2027	Waning Crescent	19.4%	August 27, 2027, 1:01 a.m. EDT August 27, 2027, 5:01 a.m. UTC	August 15, 2027
August 28, 2027	Waning Crescent	10.9%	August 28, 2027, 2:13 a.m. EDT August 28, 2027, 6:13 a.m. UTC	August 16, 2027
August 29, 2027	Waning Crescent	4.5%	August 29, 2027, 3:32 a.m. EDT August 29, 2027, 7:32 a.m. UTC	August 17, 2027
August 30, 2027	New Moon	0.8%	August 30, 2027, 4:52 a.m. EDT August 30, 2027, 8:52 a.m. UTC	August 18, 2027
August 31, 2027	New Moon	0.2%	August 31, 2027, 6:11 a.m. EDT August 31, 2027, 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.