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.
December 2027 Moon Phase Calendar — Gregorian
Gregorian dates: December 1, 2027 – December 31, 2027.
Switching keeps the reference date, December 3, 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 |
|---|---|---|---|---|---|---|
 14.5%Nov 27
|
21.8%Nov 28
|
30.1%Dec 1
|
 39%Dec 2
| |||
|
48.4%Dec 3
|
57.9%Dec 4
First Quarter 12:22 a.m. EST
|
67.3%Dec 5
|
 76.3%Dec 6
|
84.4%Dec 7
|
91.3%Dec 8
|
 96.4%Dec 9
|
|
99.3%Dec 10
|
99.7%Dec 11
Full Moon 11:08 a.m. EST
|
97.4%Dec 12
|
 92.4%Dec 13
|
85%Dec 14
|
75.7%Dec 15
|
 65.1%Dec 16
|
|
54%Dec 17
|
42.8%Dec 18
Last Quarter 4:10 a.m. EST
|
32.2%Dec 19
|
 22.6%Dec 20
|
14.4%Dec 21
|
7.9%Dec 22
|
 3.3%Dec 23
|
|
0.7%Dec 24
|
0.1%Dec 25
New Moon 3:12 p.m. EST
|
1.4%Dec 26
|
4.5%Dec 27
|
9.2%Dec 28
|
15.4%Year Day
|
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.