- 4 Mar, 11:35 Vilnius time: full moon, traditionally the Worm Moon.
- 11 Mar, 06:14 Vilnius time: last quarter.
- 19 Mar, 08:49 Vilnius time: new moon.
- 27 Mar, 06:03 Vilnius time: first quarter.
- During March 1931 the Moon passes through all eight phases. One full cycle takes about 29.5 days.
- The next full moon after this month is on 2 April 1931 (April 1931).
Moon phase times, March 1931
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 4 Mar | Full moon · Worm Moon | 11:35 | 10:35 |
| Wed 11 Mar | Last quarter | 06:14 | 05:14 |
| Thu 19 Mar | New moon | 08:49 | 07:49 |
| Fri 27 Mar | First quarter | 06:03 | 05:03 |
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 1931
| Date | Time (UTC) | Traditional name | |
|---|---|---|---|
| Sun 4 Jan | 13:14 | Wolf Moon | passed |
| Tue 3 Feb | 00:24 | Snow Moon | passed |
| Wed 4 Mar | 10:35 | Worm Moon | passed |
| Thu 2 Apr | 20:04 | Pink Moon | passed |
| Sat 2 May | 05:13 | Flower Moon | passed |
| Sun 31 May | 14:32 | Blue Moon | passed |
| Tue 30 Jun | 00:46 | Strawberry Moon | passed |
| Wed 29 Jul | 12:46 | Buck Moon | passed |
| Fri 28 Aug | 03:08 | Sturgeon Moon | passed |
| Sat 26 Sep | 19:44 | Harvest Moon | passed |
| Mon 26 Oct | 13:33 | Hunter’s Moon | passed |
| Wed 25 Nov | 07:09 | Beaver Moon | passed |
| Fri 25 Dec | 23:22 | Cold Moon | passed |
New moon dates 1931
| Date | Time (UTC) | |
|---|---|---|
| Sun 18 Jan | 18:34 | passed |
| Tue 17 Feb | 13:09 | passed |
| Thu 19 Mar | 07:49 | passed |
| Sat 18 Apr | 00:58 | passed |
| Sun 17 May | 15:26 | passed |
| Tue 16 Jun | 03:00 | passed |
| Wed 15 Jul | 12:19 | passed |
| Thu 13 Aug | 20:26 | passed |
| Sat 12 Sep | 04:25 | passed |
| Sun 11 Oct | 13:05 | passed |
| Mon 9 Nov | 22:54 | passed |
| Wed 9 Dec | 10:15 | 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 1931
No eclipse data for 1931.
The waning moon is traditionally a time for finishing
Questions people ask
When is the full moon in March 1931?
The full moon is on 4 March 1931. Its traditional name is the Worm Moon. The exact time is in the table on this page.
When is the new moon in March 1931?
The new moon is on 19 March 1931. 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.