- 3 Sep, 00:17 Vilnius time: last quarter.
- 10 Sep, 00:02 Vilnius time: new moon.
- 17 Sep, 22:05 Vilnius time: first quarter.
- 25 Sep, 12:51 Vilnius time: full moon, traditionally the Harvest Moon.
- During September 1999 the Moon passes through all eight phases. One full cycle takes about 29.5 days.
- The next full moon after this month is on 24 October 1999 (October 1999).
Moon phase times, September 1999
The four principal phases are moments, not whole days. Times are given in UTC and in Europe/Vilnius time.
| Date | Phase | Europe/Vilnius | UTC |
|---|---|---|---|
| Fri 3 Sep | Last quarter | 00:17 | 22:17 |
| Fri 10 Sep | New moon | 00:02 | 22:02 |
| Fri 17 Sep | First quarter | 22:05 | 20:05 |
| Sat 25 Sep | Full moon · Harvest Moon | 12:51 | 10:51 |
The sky: September 1999
Planets and sky events this month, as seen in London. The Moon's phases are in the calendar above.
Planets visible (mid-month)
Events
| Wed 1 Sep | The Moon near Saturn | About 2.7° apart. Look for Saturn next to the Moon. |
| Mon 27 Sep | The Moon near Jupiter | About 3.5° apart. Look for Jupiter next to the Moon. |
| Tue 28 Sep | The Moon near Saturn | About 2.5° 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 1999
| Date | Time (UTC) | Traditional name | |
|---|---|---|---|
| Sat 2 Jan | 02:49 | Wolf Moon | passed |
| Sun 31 Jan | 16:06 | Blue Moon | passed |
| Tue 2 Mar | 06:58 | Worm Moon | passed |
| Thu 1 Apr | 22:48 | Blue Moon | passed |
| Fri 30 Apr | 14:54 | Pink Moon | passed |
| Sun 30 May | 06:39 | Flower Moon | passed |
| Mon 28 Jun | 21:37 | Strawberry Moon | passed |
| Wed 28 Jul | 11:24 | Buck Moon | passed |
| Fri 27 Aug | 23:47 | Sturgeon Moon | passed |
| Sat 25 Sep | 10:51 | Harvest Moon | passed |
| Sun 24 Oct | 21:02 | Hunter’s Moon | passed |
| Tue 23 Nov | 07:03 | Beaver Moon | passed |
| Wed 22 Dec | 17:31 | Cold Moon | passed |
New moon dates 1999
| Date | Time (UTC) | |
|---|---|---|
| Sun 17 Jan | 15:46 | passed |
| Tue 16 Feb | 06:38 | passed |
| Wed 17 Mar | 18:47 | passed |
| Fri 16 Apr | 04:21 | passed |
| Sat 15 May | 12:04 | passed |
| Sun 13 Jun | 19:02 | passed |
| Tue 13 Jul | 02:23 | passed |
| Wed 11 Aug | 11:08 | passed |
| Fri 10 Sep | 22:02 | passed |
| Sat 9 Oct | 11:34 | passed |
| Mon 8 Nov | 03:52 | passed |
| Wed 8 Dec | 22:31 | 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 1999
No eclipse data for 1999.
The waning moon is traditionally a time for finishing
Questions people ask
When is the full moon in September 1999?
The full moon is on 25 September 1999. Its traditional name is the Harvest Moon. The exact time is in the table on this page.
When is the new moon in September 1999?
The new moon is on 10 September 1999. 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.