- 1 Dec, 15:02 Vilnius time: new moon.
- 8 Dec, 14:11 Vilnius time: first quarter.
- 16 Dec, 19:01 Vilnius time: full moon, traditionally the Cold Moon.
- 24 Dec, 10:48 Vilnius time: last quarter.
- 31 Dec, 01:58 Vilnius time: new moon.
- During December 2100 the Moon passes through all eight phases. One full cycle takes about 29.5 days.
- The next full moon after this month is on 15 January 2101 (January 2101).
Moon phase times, December 2100
The four principal phases are moments, not whole days. Times are given in UTC and in Europe/Vilnius time.
| Date | Phase | Europe/Vilnius | UTC |
|---|---|---|---|
| Wed 1 Dec | New moon | 15:02 | 13:02 |
| Wed 8 Dec | First quarter | 14:11 | 12:11 |
| Thu 16 Dec | Full moon · Cold Moon | 19:01 | 17:01 |
| Fri 24 Dec | Last quarter | 10:48 | 08:48 |
| Fri 31 Dec | New moon | 01:58 | 23:58 |
How to read the moon calendar
Each day shows its date, the share of the Moon’s disc that is lit at noon, and the Moon’s shape that day. When a full moon, new moon or quarter falls on a day, it is named at the bottom of the cell.
Illumination is the part of the disc lit by the Sun. It grows from new moon to full moon (waxing) and shrinks from full moon to new moon (waning). Each day opens its own page with every signal for that date.
Full moon dates 2100
| Date | Time (UTC) | Traditional name | |
|---|---|---|---|
| Tue 26 Jan | 02:51 | Wolf Moon | next |
| Wed 24 Feb | 14:53 | Snow Moon | |
| Fri 26 Mar | 01:06 | Worm Moon | |
| Sat 24 Apr | 09:45 | Pink Moon | |
| Sun 23 May | 17:27 | Flower Moon | |
| Tue 22 Jun | 01:13 | Strawberry Moon | |
| Wed 21 Jul | 10:14 | Buck Moon | |
| Fri 20 Aug | 21:31 | Sturgeon Moon | |
| Sat 18 Sep | 11:34 | Harvest Moon | |
| Mon 18 Oct | 04:08 | Hunter’s Moon | |
| Wed 17 Nov | 22:21 | Beaver Moon | |
| Thu 16 Dec | 17:01 | Cold Moon |
New moon dates 2100
| Date | Time (UTC) | |
|---|---|---|
| Sun 10 Jan | 12:57 | next |
| Tue 9 Feb | 04:56 | |
| Thu 11 Mar | 22:30 | |
| Fri 9 Apr | 16:18 | |
| Sun 9 May | 08:55 | |
| Tue 8 Jun | 23:33 | |
| Wed 7 Jul | 12:08 | |
| Fri 6 Aug | 23:03 | |
| Sat 4 Sep | 08:51 | |
| Sun 3 Oct | 18:04 | |
| Tue 2 Nov | 03:16 | |
| Wed 1 Dec | 13:02 | |
| Fri 31 Dec | 23:58 |
The eight moon phases explained
Four principal phases are exact instants; the four in between are the days that connect them.
Solar and lunar eclipses in 2100
No eclipse data for 2100.
The waning moon is traditionally a time for finishing
Questions people ask
When is the full moon in December 2100?
The full moon is on 16 December 2100. Its traditional name is the Cold Moon. The exact time is in the table on this page.
When is the new moon in December 2100?
The new moon is on 1 December 2100, 31 December 2100. The Moon can’t be seen that night: it sits between Earth and the Sun with its lit side turned away.
What do the percentages mean?
They show how much of the Moon’s disc is lit at noon. 0% is new moon, 100% is full moon and 50% is a quarter.
Why does another calendar give a different date?
A phase is a moment. When it falls near midnight, the date can differ by one day between time zones. This calendar uses Europe/Vilnius time for the days.
How often is there a full moon?
About every 29.5 days. Some months have two; the second is called a Blue Moon.
- Jean Meeus, Astronomical Algorithms, 2nd ed., Willmann-Bell, 1998, chapters 48 and 49.
- NASA Eclipse Web Site (eclipse dates and visibility).
Numbers update through the day from public sources. The text for each day is written from that day’s data and checked by the editor. Every past day keeps its own page in the archive.