- 7 May, 01:13 Vilnius time: full moon, traditionally the Flower Moon.
- 15 May, 04:41 Vilnius time: last quarter.
- 21 May, 23:57 Vilnius time: new moon.
- 28 May, 17:00 Vilnius time: first quarter.
- During May 1955 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 June 1955 (June 1955).
Moon phase times, May 1955
The four principal phases are moments, not whole days. Times are given in UTC and in Europe/Vilnius time.
| Date | Phase | Europe/Vilnius | UTC |
|---|---|---|---|
| Sat 7 May | Full moon · Flower Moon | 01:13 | 22:13 |
| Sun 15 May | Last quarter | 04:41 | 01:41 |
| Sat 21 May | New moon | 23:57 | 20:57 |
| Sat 28 May | First quarter | 17:00 | 14:00 |
The sky: May 1955
Planets and sky events this month, as seen in London. The Moon's phases are in the calendar above.
Planets visible (mid-month)
Events
| Fri 6 May | Eta Aquariids meteor shower peak | Up to 50 meteors an hour in a perfect sky. The Moon is 100% lit: only the brightest meteors will show. |
| Sat 7 May | The Moon near Saturn | About 5.7° apart. Look for Saturn next to the Moon. |
| Mon 9 May | Saturn at opposition | The planet is opposite the Sun: it rises at sunset, is up all night and at its brightest of the year. |
| Sat 21 May | Mercury farthest from the Sun | 22° in the evening sky. Look low in the west after sunset. |
| Mon 23 May | The Moon near Mercury | About 1.8° apart. Look for Mercury next to the Moon. |
| Mon 23 May | The Moon near Mars | About 1.2° apart. Look for Mars next to the Moon. |
| Wed 25 May | The Moon near Jupiter | About 3.1° apart. Look for Jupiter next to the Moon. |
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 1955
| Date | Time (UTC) | Traditional name | |
|---|---|---|---|
| Sat 8 Jan | 12:43 | Wolf Moon | passed |
| Mon 7 Feb | 01:42 | Snow Moon | passed |
| Tue 8 Mar | 15:40 | Worm Moon | passed |
| Thu 7 Apr | 06:34 | Pink Moon | passed |
| Sat 7 May | 22:13 | Flower Moon | passed |
| Sun 5 Jun | 14:07 | Strawberry Moon | passed |
| Tue 5 Jul | 05:27 | Buck Moon | passed |
| Wed 3 Aug | 19:29 | Sturgeon Moon | passed |
| Fri 2 Sep | 07:58 | Harvest Moon | passed |
| Sat 1 Oct | 19:16 | Hunter’s Moon | passed |
| Mon 31 Oct | 06:03 | Blue Moon | passed |
| Tue 29 Nov | 16:49 | Beaver Moon | passed |
| Thu 29 Dec | 03:43 | Cold Moon | passed |
New moon dates 1955
| Date | Time (UTC) | |
|---|---|---|
| Mon 24 Jan | 01:06 | passed |
| Tue 22 Feb | 15:53 | passed |
| Thu 24 Mar | 03:41 | passed |
| Fri 22 Apr | 13:05 | passed |
| Sat 21 May | 20:57 | passed |
| Mon 20 Jun | 04:11 | passed |
| Tue 19 Jul | 11:33 | passed |
| Wed 17 Aug | 19:57 | passed |
| Fri 16 Sep | 06:18 | passed |
| Sat 15 Oct | 19:31 | passed |
| Mon 14 Nov | 12:00 | passed |
| Wed 14 Dec | 07:06 | 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 1955
No eclipse data for 1955.
The waning moon is traditionally a time for finishing
Questions people ask
When is the full moon in May 1955?
The full moon is on 7 May 1955. Its traditional name is the Flower Moon. The exact time is in the table on this page.
When is the new moon in May 1955?
The new moon is on 21 May 1955. 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.