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.
August 2026 Moon Phase Calendar — Gregorian
Gregorian dates: August 1, 2026 – August 31, 2026.
Switching keeps the reference date, August 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.
| Sunday | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday |
|---|---|---|---|---|---|---|
 88.8%Jul 17
| ||||||
|
81.4%Jul 18
|
72.5%Jul 19
|
 62.3%Jul 20
|
51.2%Jul 21
Last Quarter 10:21 p.m. EDT
|
39.9%Jul 22
|
 28.9%Jul 23
|
18.9%Jul 24
|
|
10.5%Jul 25
|
4.3%Jul 26
|
 0.8%Jul 27
|
0.1%Jul 28
New Moon 1:36 p.m. EDT
|
2.2%Aug 1
|
 6.6%Aug 2
|
13.1%Aug 3
|
|
21%Aug 4
|
29.9%Aug 5
|
 39.3%Aug 6
|
49%Aug 7
First Quarter 10:46 p.m. EDT
|
58.5%Aug 8
|
67.7%Aug 9
|
 76.2%Aug 10
|
|
83.8%Aug 11
|
90.2%Aug 12
|
95.2%Aug 13
|
 98.6%Aug 14
|
100%Aug 15
|
99.3%Aug 16
Full Moon 12:18 a.m. EDT
|
96.4%Aug 17
|
|
91.3%Aug 18
|
84.2%Aug 19
|
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.