August 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.
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.
| Sunday | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday |
|---|---|---|---|---|---|---|
 48.9%April 23
First Quarter 10:31 p.m. EDT
|
59.9%April 24
|
70.1%April 25
|
 79.2%April 26
|
86.9%April 27
|
92.9%April 28
|
 97.1%April 29
|
|
99.4%April 30
|
99.8%May 1
Full Moon 1:23 p.m. EDT
|
98.3%May 2
|
 95.1%May 3
|
90.3%May 4
|
84.1%May 5
|
76.7%May 6
|
 68.2%May 7
|
58.8%May 8
|
49%May 9
Last Quarter 5:10 p.m. EDT
|
38.8%May 10
|
 28.9%May 11
|
19.5%May 12
|
11.4%May 13
|
|
5.1%May 14
|
 1.2%May 15
|
0.2%May 16
New Moon 4:00 p.m. EDT
|
2.3%May 17
|
 7.2%May 18
|
14.7%May 19
|
23.9%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 2026 Moon Phases — Exact Times
| Phase | Date | Time (ET) | Time (UTC) | 13 month date |
|---|---|---|---|---|
| Last Quarter | 10:21 p.m. EDT | 2:21 a.m. UTC | July 21, 2026 | |
| New Moon | 1:36 p.m. EDT | 5:36 p.m. UTC | July 28, 2026 | |
| First Quarter | 10:46 p.m. EDT | 2:46 a.m. UTC | August 7, 2026 | |
| Full Moon | 12:18 a.m. EDT | 4:18 a.m. UTC | August 16, 2026 |
Special events and calculation notes
- : Total solar eclipse (NASA GSFC)
- : Partial 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
“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.