- 5 Sep, 04:45 Vilnius time: full moon, traditionally the Harvest Moon.
- 11 Sep, 23:53 Vilnius time: last quarter.
- 19 Sep, 03:46 Vilnius time: new moon.
- 27 Sep, 05:05 Vilnius time: first quarter.
- During September 1990 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 1990 (October 1990).
Moon phase times, September 1990
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 5 Sep | Full moon · Harvest Moon | 04:45 | 01:45 |
| Tue 11 Sep | Last quarter | 23:53 | 20:53 |
| Wed 19 Sep | New moon | 03:46 | 00:46 |
| Thu 27 Sep | First quarter | 05:05 | 02:05 |
The sky: September 1990
Planets and sky events this month, as seen in London. The Moon's phases are in the calendar above.
Planets visible (mid-month)
Events
| Sat 1 Sep | The Moon near Saturn | About 1.6° apart. Look for Saturn next to the Moon. |
| Sat 15 Sep | The Moon near Jupiter | About 0.3° apart. Look for Jupiter next to the Moon. |
| Mon 17 Sep | The Moon near Mercury | About 2.1° apart. Look for Mercury next to the Moon. |
| Mon 24 Sep | Mercury farthest from the Sun | 18° in the morning sky. Look low in the east before sunrise. |
| Fri 28 Sep | The Moon near Saturn | About 1.4° apart. Look for Saturn 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 1990
| Date | Time (UTC) | Traditional name | |
|---|---|---|---|
| Thu 11 Jan | 04:56 | Wolf Moon | passed |
| Fri 9 Feb | 19:15 | Snow Moon | passed |
| Sun 11 Mar | 10:58 | Worm Moon | passed |
| Tue 10 Apr | 03:18 | Pink Moon | passed |
| Wed 9 May | 19:30 | Flower Moon | passed |
| Fri 8 Jun | 11:00 | Strawberry Moon | passed |
| Sun 8 Jul | 01:23 | Buck Moon | passed |
| Mon 6 Aug | 14:19 | Sturgeon Moon | passed |
| Wed 5 Sep | 01:45 | Harvest Moon | passed |
| Thu 4 Oct | 12:01 | Hunter’s Moon | passed |
| Fri 2 Nov | 21:47 | Beaver Moon | passed |
| Sun 2 Dec | 07:49 | Cold Moon | passed |
| Mon 31 Dec | 18:34 | Blue Moon | passed |
New moon dates 1990
| Date | Time (UTC) | |
|---|---|---|
| Fri 26 Jan | 19:19 | passed |
| Sun 25 Feb | 08:54 | passed |
| Mon 26 Mar | 19:48 | passed |
| Wed 25 Apr | 04:27 | passed |
| Thu 24 May | 11:46 | passed |
| Fri 22 Jun | 18:54 | passed |
| Sun 22 Jul | 02:54 | passed |
| Mon 20 Aug | 12:38 | passed |
| Wed 19 Sep | 00:46 | passed |
| Thu 18 Oct | 15:36 | passed |
| Sat 17 Nov | 09:04 | passed |
| Mon 17 Dec | 04:21 | 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 1990
No eclipse data for 1990.
The waning moon is traditionally a time for finishing
Questions people ask
When is the full moon in September 1990?
The full moon is on 5 September 1990. Its traditional name is the Harvest Moon. The exact time is in the table on this page.
When is the new moon in September 1990?
The new moon is on 19 September 1990. 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.