- 2 Sep, 23:42 Vilnius time: full moon, traditionally the Harvest Moon.
- 10 Sep, 20:59 Vilnius time: last quarter.
- 17 Sep, 12:27 Vilnius time: new moon.
- 24 Sep, 11:30 Vilnius time: first quarter.
- During September 2001 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 October 2001 (October 2001).
Moon phase times, September 2001
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 2 Sep | Full moon · Harvest Moon | 23:42 | 21:42 |
| Mon 10 Sep | Last quarter | 20:59 | 18:59 |
| Mon 17 Sep | New moon | 12:27 | 10:27 |
| Mon 24 Sep | First quarter | 11:30 | 09:30 |
The sky: September 2001
Planets and sky events this month, as seen in London. The Moon's phases are in the calendar above.
Planets visible (mid-month)
Events
| Mon 10 Sep | The Moon near Saturn | About 0.2° apart. Look for Saturn next to the Moon. |
| Wed 12 Sep | The Moon near Jupiter | About 1.0° apart. Look for Jupiter next to the Moon. |
| Sat 15 Sep | The Moon near Venus | About 3.2° apart. Look for Venus next to the Moon. |
| Tue 18 Sep | Mercury farthest from the Sun | 27° in the evening sky. Too low at this latitude this time, hard to see. |
| Tue 25 Sep | The Moon near Mars | About 2.4° 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 2001
| Date | Time (UTC) | Traditional name | |
|---|---|---|---|
| Tue 9 Jan | 20:24 | Wolf Moon | passed |
| Thu 8 Feb | 07:11 | Snow Moon | passed |
| Fri 9 Mar | 17:22 | Worm Moon | passed |
| Sun 8 Apr | 03:21 | Pink Moon | passed |
| Mon 7 May | 13:52 | Flower Moon | passed |
| Wed 6 Jun | 01:39 | Strawberry Moon | passed |
| Thu 5 Jul | 15:03 | Buck Moon | passed |
| Sat 4 Aug | 05:55 | Sturgeon Moon | passed |
| Sun 2 Sep | 21:42 | Harvest Moon | passed |
| Tue 2 Oct | 13:48 | Hunter’s Moon | passed |
| Thu 1 Nov | 05:40 | Beaver Moon | passed |
| Fri 30 Nov | 20:49 | Blue Moon | passed |
| Sun 30 Dec | 10:40 | Cold Moon | passed |
New moon dates 2001
| Date | Time (UTC) | |
|---|---|---|
| Wed 24 Jan | 13:06 | passed |
| Fri 23 Feb | 08:21 | passed |
| Sun 25 Mar | 01:21 | passed |
| Mon 23 Apr | 15:25 | passed |
| Wed 23 May | 02:46 | passed |
| Thu 21 Jun | 11:57 | passed |
| Fri 20 Jul | 19:44 | passed |
| Sun 19 Aug | 02:55 | passed |
| Mon 17 Sep | 10:27 | passed |
| Tue 16 Oct | 19:23 | passed |
| Thu 15 Nov | 06:39 | passed |
| Fri 14 Dec | 20:47 | 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 2001
No eclipse data for 2001.
The waning moon is traditionally a time for finishing
Questions people ask
When is the full moon in September 2001?
The full moon is on 2 September 2001. Its traditional name is the Harvest Moon. The exact time is in the table on this page.
When is the new moon in September 2001?
The new moon is on 17 September 2001. 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.