- 7 Dec, 11:21 Vilnius time: full moon, traditionally the Cold Moon.
- 14 Dec, 02:15 Vilnius time: last quarter.
- 21 Dec, 19:06 Vilnius time: new moon.
- 29 Dec, 23:52 Vilnius time: first quarter.
- During December 1938 the Moon passes through all eight phases. One full cycle takes about 29.5 days.
- The next full moon after this month is on 5 January 1939 (January 1939).
Moon phase times, December 1938
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 7 Dec | Full moon · Cold Moon | 11:21 | 10:21 |
| Wed 14 Dec | Last quarter | 02:15 | 01:15 |
| Wed 21 Dec | New moon | 19:06 | 18:06 |
| Thu 29 Dec | First quarter | 23:52 | 22:52 |
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 1938
| Date | Time (UTC) | Traditional name | |
|---|---|---|---|
| Sun 16 Jan | 05:52 | Wolf Moon | passed |
| Mon 14 Feb | 17:13 | Snow Moon | passed |
| Wed 16 Mar | 05:14 | Worm Moon | passed |
| Thu 14 Apr | 18:20 | Pink Moon | passed |
| Sat 14 May | 08:38 | Flower Moon | passed |
| Mon 13 Jun | 23:46 | Strawberry Moon | passed |
| Tue 12 Jul | 15:03 | Buck Moon | passed |
| Thu 11 Aug | 05:56 | Sturgeon Moon | passed |
| Fri 9 Sep | 20:07 | Harvest Moon | passed |
| Sun 9 Oct | 09:36 | Hunter’s Moon | passed |
| Mon 7 Nov | 22:22 | Beaver Moon | passed |
| Wed 7 Dec | 10:21 | Cold Moon | passed |
New moon dates 1938
| Date | Time (UTC) | |
|---|---|---|
| Sat 1 Jan | 18:57 | passed |
| Mon 31 Jan | 13:34 | passed |
| Wed 2 Mar | 05:39 | passed |
| Thu 31 Mar | 18:51 | passed |
| Sat 30 Apr | 05:26 | passed |
| Sun 29 May | 13:58 | passed |
| Mon 27 Jun | 21:09 | passed |
| Wed 27 Jul | 03:52 | passed |
| Thu 25 Aug | 11:16 | passed |
| Fri 23 Sep | 20:32 | passed |
| Sun 23 Oct | 08:41 | passed |
| Tue 22 Nov | 00:03 | passed |
| Wed 21 Dec | 18:06 | passed |
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 1938
No eclipse data for 1938.
The waning moon is traditionally a time for finishing
Questions people ask
When is the full moon in December 1938?
The full moon is on 7 December 1938. Its traditional name is the Cold Moon. The exact time is in the table on this page.
When is the new moon in December 1938?
The new moon is on 21 December 1938. 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.