- 7 Aug, 00:50 Vilnius time: new moon.
- 14 Aug, 13:56 Vilnius time: first quarter.
- 21 Aug, 04:44 Vilnius time: full moon, traditionally the Sturgeon Moon.
- 28 Aug, 12:35 Vilnius time: last quarter.
- During August 2013 the Moon passes through all eight phases. One full cycle takes about 29.5 days.
- The next full moon after this month is on 19 September 2013 (September 2013).
Moon phase times, August 2013
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 7 Aug | New moon | 00:50 | 21:50 |
| Wed 14 Aug | First quarter | 13:56 | 10:56 |
| Wed 21 Aug | Full moon · Sturgeon Moon | 04:44 | 01:44 |
| Wed 28 Aug | Last quarter | 12:35 | 09:35 |
The sky: August 2013
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 3 Aug | The Moon near Jupiter | About 4.0° apart. Look for Jupiter next to the Moon. |
| Sun 4 Aug | The Moon near Mars | About 5.2° apart. Look for Mars next to the Moon. |
| Mon 5 Aug | The Moon near Mercury | About 4.3° apart. Look for Mercury next to the Moon. |
| Sat 10 Aug | The Moon near Venus | About 4.8° apart, but Venus is not visible that night. |
| Mon 12 Aug | Perseids meteor shower peak | Up to 100 meteors an hour in a perfect sky. The Moon is 30% lit and will hide some fainter meteors. |
| Tue 13 Aug | The Moon near Saturn | About 2.8° apart. Look for Saturn next to the Moon. |
| Sat 31 Aug | The Moon near Jupiter | About 4.4° apart. Look for Jupiter 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 2013
| Date | Time (UTC) | Traditional name | |
|---|---|---|---|
| Sun 27 Jan | 04:38 | Wolf Moon | passed |
| Mon 25 Feb | 20:26 | Snow Moon | passed |
| Wed 27 Mar | 09:27 | Worm Moon | passed |
| Thu 25 Apr | 19:57 | Pink Moon | passed |
| Sat 25 May | 04:24 | Flower Moon | passed |
| Sun 23 Jun | 11:32 | Strawberry Moon | passed |
| Mon 22 Jul | 18:15 | Buck Moon | passed |
| Wed 21 Aug | 01:44 | Sturgeon Moon | passed |
| Thu 19 Sep | 11:12 | Harvest Moon | passed |
| Sat 19 Oct | 23:37 | Hunter’s Moon | passed |
| Sun 17 Nov | 15:15 | Beaver Moon | passed |
| Tue 17 Dec | 09:28 | Cold Moon | passed |
New moon dates 2013
| Date | Time (UTC) | |
|---|---|---|
| Fri 11 Jan | 19:43 | passed |
| Sun 10 Feb | 07:20 | passed |
| Mon 11 Mar | 19:50 | passed |
| Wed 10 Apr | 09:35 | passed |
| Fri 10 May | 00:28 | passed |
| Sat 8 Jun | 15:56 | passed |
| Mon 8 Jul | 07:14 | passed |
| Wed 7 Aug | 21:50 | passed |
| Thu 5 Sep | 11:36 | passed |
| Sat 5 Oct | 00:34 | passed |
| Sun 3 Nov | 12:49 | passed |
| Tue 3 Dec | 00:22 | 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 2013
No eclipse data for 2013.
The waning moon is traditionally a time for finishing
Questions people ask
When is the full moon in August 2013?
The full moon is on 21 August 2013. Its traditional name is the Sturgeon Moon. The exact time is in the table on this page.
When is the new moon in August 2013?
The new moon is on 7 August 2013. 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.