- 5 Sep, 07:01 Vilnius time: full moon, traditionally the Harvest Moon.
- 11 Sep, 21:22 Vilnius time: last quarter.
- 19 Sep, 17:41 Vilnius time: new moon.
- 27 Sep, 20:16 Vilnius time: first quarter.
- During September 1971 the Moon passes through all eight phases. One full cycle takes about 29.5 days.
- The next full moon after this month is on 4 October 1971 (October 1971).
Moon phase times, September 1971
The four principal phases are moments, not whole days. Times are given in UTC and in Europe/Vilnius time.
| Date | Phase | Europe/Vilnius | UTC |
|---|---|---|---|
| Sun 5 Sep | Full moon · Harvest Moon | 07:01 | 04:01 |
| Sat 11 Sep | Last quarter | 21:22 | 18:22 |
| Sun 19 Sep | New moon | 17:41 | 14:41 |
| Mon 27 Sep | First quarter | 20:16 | 17:16 |
The sky: September 1971
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 3 Sep | The Moon near Mars | About 5.9° apart. Look for Mars next to the Moon. |
| Sun 12 Sep | Mercury farthest from the Sun | 18° in the morning sky. Look low in the east before sunrise. |
| Sat 18 Sep | The Moon near Mercury | About 3.6° apart. Look for Mercury next to the Moon. |
| Sat 25 Sep | The Moon near Jupiter | About 5.4° apart. Look for Jupiter next to the Moon. |
| Thu 30 Sep | The Moon near Mars | About 4.4° apart. Look for Mars 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 1971
| Date | Time (UTC) | Traditional name | |
|---|---|---|---|
| Mon 11 Jan | 13:19 | Wolf Moon | passed |
| Wed 10 Feb | 07:40 | Snow Moon | passed |
| Fri 12 Mar | 02:32 | Worm Moon | passed |
| Sat 10 Apr | 20:09 | Pink Moon | passed |
| Mon 10 May | 11:22 | Flower Moon | passed |
| Wed 9 Jun | 00:03 | Strawberry Moon | passed |
| Thu 8 Jul | 10:36 | Buck Moon | passed |
| Fri 6 Aug | 19:41 | Sturgeon Moon | passed |
| Sun 5 Sep | 04:01 | Harvest Moon | passed |
| Mon 4 Oct | 12:19 | Hunter’s Moon | passed |
| Wed 3 Nov | 21:18 | Beaver Moon | passed |
| Thu 2 Dec | 07:47 | Cold Moon | passed |
| Fri 31 Dec | 20:19 | Blue Moon | passed |
New moon dates 1971
| Date | Time (UTC) | |
|---|---|---|
| Wed 27 Jan | 22:54 | passed |
| Thu 25 Feb | 09:47 | passed |
| Fri 26 Mar | 19:22 | passed |
| Sun 25 Apr | 04:01 | passed |
| Mon 24 May | 12:31 | passed |
| Wed 23 Jun | 21:56 | passed |
| Thu 22 Jul | 09:14 | passed |
| Sat 21 Aug | 22:52 | passed |
| Sun 19 Sep | 14:41 | passed |
| Tue 19 Oct | 07:58 | passed |
| Thu 18 Nov | 01:45 | passed |
| Fri 17 Dec | 19:02 | 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 1971
No eclipse data for 1971.
The waning moon is traditionally a time for finishing
Questions people ask
When is the full moon in September 1971?
The full moon is on 5 September 1971. Its traditional name is the Harvest Moon. The exact time is in the table on this page.
When is the new moon in September 1971?
The new moon is on 19 September 1971. 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.