May 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.
August 2027 Moon Phase Calendar — Gregorian
Gregorian dates: August 1, 2027 – August 31, 2027.
Switching keeps the reference date, August 1, 2027. Weekday headings follow the Gregorian calendar. 13-month dates appear below each day. The detail tables below keep their stated Gregorian date ranges.
| Sunday | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday |
|---|---|---|---|---|---|---|
 0.3%Jul 17
|
0.5%Jul 18
New Moon 6:05 a.m. EDT
|
3.8%Jul 19
|
 9.8%Jul 20
|
17.8%Jul 21
|
27.3%Jul 22
|
 37.5%Jul 23
|
|
48%Jul 24
|
58.2%Jul 25
First Quarter 12:54 a.m. EDT
|
67.8%Jul 26
|
 76.6%Jul 27
|
84.2%Jul 28
|
90.5%Aug 1
|
95.3%Aug 2
|
 98.5%Aug 3
|
99.9%Aug 4
|
99.5%Aug 5
Full Moon 3:28 a.m. EDT
|
97.4%Aug 6
|
 93.4%Aug 7
|
87.7%Aug 8
|
80.4%Aug 9
|
|
71.7%Aug 10
|
 61.9%Aug 11
|
51.3%Aug 12
Last Quarter 10:27 p.m. EDT
|
40.3%Aug 13
|
 29.4%Aug 14
|
19.4%Aug 15
|
10.9%Aug 16
|
|
4.5%Aug 17
|
0.8%Aug 18
|
0.2%Aug 19
New Moon 1:41 p.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.
May 2026 Moon Phases — Exact Times
| Phase | Date | Time (ET) | Time (UTC) | 13 month date |
|---|---|---|---|---|
| Full Moon | 1:23 p.m. EDT | 5:23 p.m. UTC | May 9, 2026 | |
| Last Quarter | 5:10 p.m. EDT | 9:10 p.m. UTC | May 17, 2026 | |
| New Moon | 4:00 p.m. EDT | 8:00 p.m. UTC | May 24, 2026 | |
| First Quarter | 7:10 a.m. EDT | 11:10 a.m. UTC | June 3, 2026 | |
| Full Moon | 4:45 a.m. EDT | 8:45 a.m. UTC | June 11, 2026 |
Special events and calculation notes
- : Second ET-calendar-month full moon; also the Flower Moon
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
“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.