- 7 May, 04:17 Vilnius time: full moon, traditionally the Flower Moon.
- 14 May, 03:22 Vilnius time: last quarter.
- 21 May, 02:21 Vilnius time: new moon.
- 29 May, 01:07 Vilnius time: first quarter.
- During May 1917 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 1917 (June 1917).
Moon phase times, May 1917
The four principal phases are moments, not whole days. Times are given in UTC and in Europe/Vilnius time.
| Date | Phase | Europe/Vilnius | UTC |
|---|---|---|---|
| Mon 7 May | Full moon · Flower Moon | 04:17 | 02:42 |
| Mon 14 May | Last quarter | 03:22 | 01:46 |
| Mon 21 May | New moon | 02:21 | 00:45 |
| Tue 29 May | First quarter | 01:07 | 23:32 |
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 1917
| Date | Time (UTC) | Traditional name | |
|---|---|---|---|
| Mon 8 Jan | 07:40 | Wolf Moon | passed |
| Wed 7 Feb | 03:27 | Snow Moon | passed |
| Thu 8 Mar | 21:57 | Worm Moon | passed |
| Sat 7 Apr | 13:47 | Pink Moon | passed |
| Mon 7 May | 02:42 | Flower Moon | passed |
| Tue 5 Jun | 13:05 | Strawberry Moon | passed |
| Wed 4 Jul | 21:39 | Buck Moon | passed |
| Fri 3 Aug | 05:09 | Sturgeon Moon | passed |
| Sat 1 Sep | 12:27 | Harvest Moon | passed |
| Sun 30 Sep | 20:29 | Blue Moon | passed |
| Tue 30 Oct | 06:18 | Hunter’s Moon | passed |
| Wed 28 Nov | 18:40 | Beaver Moon | passed |
| Fri 28 Dec | 09:50 | Cold Moon | passed |
New moon dates 1917
| Date | Time (UTC) | |
|---|---|---|
| Tue 23 Jan | 07:38 | passed |
| Wed 21 Feb | 18:07 | passed |
| Fri 23 Mar | 04:03 | passed |
| Sat 21 Apr | 14:00 | passed |
| Mon 21 May | 00:45 | passed |
| Tue 19 Jun | 13:01 | passed |
| Thu 19 Jul | 02:58 | passed |
| Fri 17 Aug | 18:19 | passed |
| Sun 16 Sep | 10:26 | passed |
| Tue 16 Oct | 02:39 | passed |
| Wed 14 Nov | 18:27 | passed |
| Fri 14 Dec | 09:16 | 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 1917
No eclipse data for 1917.
The waning moon is traditionally a time for finishing
Questions people ask
When is the full moon in May 1917?
The full moon is on 7 May 1917. Its traditional name is the Flower Moon. The exact time is in the table on this page.
When is the new moon in May 1917?
The new moon is on 21 May 1917. 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.