December 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.
September 2027 Moon Phase Calendar — Gregorian
Gregorian dates: September 1, 2027 – September 30, 2027.
Switching keeps the reference date, September 10, 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 |
|---|---|---|---|---|---|---|
 2.4%Aug 20
|
 7.4%Aug 21
|
14.4%Aug 22
|
23%Aug 23
| |||
|
32.5%Aug 24
|
 42.4%Aug 25
|
52.4%Aug 26
First Quarter 2:31 p.m. EDT
|
62%Aug 27
|
 71%Aug 28
|
79.2%Sep 1
|
86.3%Sep 2
|
|
92.1%Sep 3
|
 96.4%Sep 4
|
99.1%Sep 5
|
99.9%Sep 6
Full Moon 7:03 p.m. EDT
|
98.8%Sep 7
|
 95.8%Sep 8
|
90.8%Sep 9
|
|
83.9%Sep 10
|
75.5%Sep 11
|
 65.7%Sep 12
|
54.9%Sep 13
|
43.7%Sep 14
Last Quarter 6:20 a.m. EDT
|
32.6%Sep 15
|
 22.2%Sep 16
|
|
13.2%Sep 17
|
6.3%Sep 18
|
1.8%Sep 19
|
0.2%Sep 20
New Moon 10:35 p.m. EDT
|
1.3%Sep 21
|
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.
December 2026 Moon Phases — Exact Times
| Phase | Date | Time (ET) | Time (UTC) | 13 month date |
|---|---|---|---|---|
| Last Quarter | 1:08 a.m. EST | 6:08 a.m. UTC | November 27, 2026 | |
| New Moon | 7:51 p.m. EST | 12:51 a.m. UTC | December 6, 2026 | |
| First Quarter | 12:42 a.m. EST | 5:42 a.m. UTC | December 15, 2026 | |
| Full Moon | 8:28 p.m. EST | 1:28 a.m. UTC | December 21, 2026 | |
| Last Quarter | 1:59 p.m. EST | 6:59 p.m. UTC | December 28, 2026 |
Special events and calculation notes
- : Supermoon (geocentric distance <= 360,000 km)
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.