2023Calendar of Astronomical Events
2023Phases of the Moon
Greenwich Mean Time
The following table gives the date and time of the Moon's phases for the year. The times listed are for Greenwich Mean Time.If Daylight Saving Time is in effect, add one hour to the times listed.
| 2023 Phases of the Moon | |||
| Greenwich Mean Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| - | - | Jan 6 23:08 | Jan 15 02:10 |
| Jan 21 20:53 | Jan 28 15:19 | Feb 5 18:29 | Feb 13 16:01 |
| Feb 20 07:06 | Feb 27 08:06 | Mar 7 12:40 | Mar 15 02:08 |
| Mar 21 17:23 | Mar 29 02:32 | Apr 6 04:35 | Apr 13 09:11 |
| Apr 20 04:12 H | Apr 27 21:20 | May 5 17:34 n | May 12 14:28 |
| May 19 15:53 | May 27 15:22 | Jun 4 03:42 | Jun 10 19:31 |
| Jun 18 04:37 | Jun 26 07:50 | Jul 3 11:39 | Jul 10 01:48 |
| Jul 17 18:32 | Jul 25 22:07 | Aug 1 18:31 | Aug 8 10:28 |
| Aug 16 09:38 | Aug 24 09:57 | Aug 31 01:35 | Sep 6 22:21 |
| Sep 15 01:40 | Sep 22 19:32 | Sep 29 09:57 | Oct 6 13:48 |
| Oct 14 17:55 A | Oct 22 03:29 | Oct 28 20:24 p | Nov 5 08:37 |
| Nov 13 09:27 | Nov 20 10:50 | Nov 27 09:16 | Dec 5 05:49 |
| Dec 12 23:32 | Dec 19 18:39 | Dec 27 00:33 | - |
An eclipse of the Sun can only occur at New Moon (see: Solar Eclipses for Beginners), while an eclipse of the Moon can only occur at Full Moon (see: Lunar Eclipses for Beginners). In any calendar year there are a minimum of two solar and two lunar eclipses.
If an eclipse of the Sun or Moon takes place on a given date, it is noted by a character next to the date in the table above. Solar eclipses are indicated as: T=Total, A=Annular, H=Hybrid and P=Partial.Lunar eclipses are indicated as: t=Total, p=Partial, and n=Penumbral.
Phases of the Moon Photo Gallery is an image collection showing the Moon's phases over a complete synodic month.
2023Calendar of Astronomical Events
Greenwich Mean Time
The following table gives the date and time of the important astronomical events for the year. The times listed are for Greenwich Mean Time.If Daylight Saving Time is in effect, add one hour to the times listed. A key to astronomical terms appears below the calendar.
| 2023Calendar of Astronomical Events | ||||||||
| Greenwich Mean Time | ||||||||
| January - June | July - December | |||||||
Date GMT Event (h:m)Jan 01 15:25 Moon at Ascending Node 02 20 Mercury at Perihelion 03 01:24 Pleiades 2.6°N of Moon 03 19:35 Mars 0.5°N of Moon: Occn. 04 03 Quadrantid Meteor Shower 04 16 Earth at Perihelion: 0.98329 AU 06 23:08 FULL MOON 07 13 Mercury at Inferior Conjunction 07 13:40 Pollux 1.9°N of Moon 08 09:19 Moon at Apogee: 406459 km 08 15:23 Beehive 3.6°S of Moon 10 11:38 Regulus 4.6°S of Moon 14 21:59 Spica 3.9°S of Moon 15 02:10 LAST QUARTER MOON 16 06:32 Moon at Descending Node 18 09:32 Antares 2.1°S of Moon 20 12 Jupiter at Perihelion: 4.95101 AU 21 20:53 NEW MOON 21 20:58 Moon at Perigee: 356570 km 22 22 Venus 0.3°S of Saturn 23 07:22 Saturn 3.8°N of Moon 23 08:20 Venus 3.5°N of Moon 26 02:00 Jupiter 1.8°N of Moon 28 15:19 FIRST QUARTER MOON 28 16:05 Moon at Ascending Node 30 06 Mercury at Greatest Elong: 25.0°W 30 07:21 Pleiades 2.4°N of Moon 31 04:24 Mars 0.1°N of Moon: Occn.Feb 03 19:47 Pollux 1.9°N of Moon 04 08:55 Moon at Apogee: 406476 km 04 21:32 Beehive 3.5°S of Moon 05 18:29 FULL MOON 06 17:44 Regulus 4.5°S of Moon 11 04:23 Spica 3.6°S of Moon 12 07:31 Moon at Descending Node 13 16:01 LAST QUARTER MOON 14 18:09 Antares 1.9°S of Moon 15 20 Mercury at Aphelion 16 16 Saturn in Conjunction with Sun 18 20:53 Mercury 3.6°N of Moon 19 09:06 Moon at Perigee: 358267 km 20 07:06 NEW MOON 22 07:57 Venus 2.1°N of Moon 22 21:58 Jupiter 1.2°N of Moon: Occn. 24 18:56 Moon at Ascending Node 26 14:42 Pleiades 2.1°N of Moon 27 08:06 FIRST QUARTER MOON 28 04:32 Mars 1.1°S of Moon: Occn.Mar 02 04 Venus 0.5°N of Jupiter 02 14 Mercury 0.9°S of Saturn 03 02:10 Pollux 1.7°N of Moon 03 18:01 Moon at Apogee: 405890 km 04 03:56 Beehive 3.6°S of Moon 06 00:08 Regulus 4.5°S of Moon 07 12:40 FULL MOON 10 10:06 Spica 3.4°S of Moon 11 08:53 Moon at Descending Node 14 00:21 Antares 1.6°S of Moon 15 02:08 LAST QUARTER MOON 15 23 Neptune in Conjunction with Sun 17 11 Mercury at Superior Conjunction 19 15:16 Moon at Perigee: 362698 km 19 15:20 Saturn 3.6°N of Moon 20 21:25 Vernal Equinox 21 17:23 NEW MOON 24 02:08 Moon at Ascending Node 24 10:28 Venus 0.1°N of Moon: Occn. 25 23:42 Pleiades 1.9°N of Moon 28 04 Mercury 1.3°N of Jupiter 28 13:16 Mars 2.3°S of Moon 29 02:32 FIRST QUARTER MOON 30 09:23 Pollux 1.6°N of Moon 31 11:07 Beehive 3.8°S of Moon 31 11:18 Moon at Apogee: 404921 km 31 20 Mercury at Perihelion Apr 02 07:22 Regulus 4.6°S of Moon 06 04:35 FULL MOON 06 16:45 Spica 3.3°S of Moon 07 13:51 Moon at Descending Node 10 05:50 Antares 1.5°S of Moon 11 04:42 Venus 2.5°S of Pleiades 11 21 Jupiter in Conjunction with Sun 11 22 Mercury at Greatest Elong: 19.5°E 13 09:11 LAST QUARTER MOON 16 02:22 Moon at Perigee: 367967 km 16 03:47 Saturn 3.5°N of Moon 17 16 Venus at Perihelion 19 09:08 Venus 7.3°N of Aldebaran 20 04:12 NEW MOON 20 04:17 Hybrid Solar Eclipse; mag=1.013 20 11:32 Moon at Ascending Node 22 09:14 Pleiades 1.9°N of Moon 23 01 Lyrid Meteor Shower 23 13:03 Venus 1.3°S of Moon 26 02:18 Mars 3.2°S of Moon 26 17:26 Pollux 1.5°N of Moon 27 19:02 Beehive 3.8°S of Moon 27 21:20 FIRST QUARTER MOON 28 06:43 Moon at Apogee: 404300 km 29 15:21 Regulus 4.7°S of MoonMay 01 23 Mercury at Inferior Conjunction 04 00:55 Spica 3.3°S of Moon 04 21:57 Moon at Descending Node 05 14 Eta-Aquarid Meteor Shower 05 17:23 Pen. Lunar Eclipse; mag=0.964 05 17:34 FULL MOON 07 12:35 Antares 1.5°S of Moon 08 11:27 Mars 4.9°S of Pollux 09 21 Uranus in Conjunction with Sun 11 04:57 Moon at Perigee: 369345 km 12 14:28 LAST QUARTER MOON 13 13:04 Saturn 3.3°N of Moon 17 13 Mercury 6.2°N of Jupiter 17 13:15 Jupiter 0.8°S of Moon: Occn. 17 19:36 Moon at Ascending Node 18 01:34 Mercury 3.6°S of Moon 19 15:53 NEW MOON 23 12:08 Venus 2.2°S of Moon 24 01:37 Pollux 1.6°N of Moon 24 17:32 Mars 3.8°S of Moon 25 03:06 Beehive 3.8°S of Moon 26 01:39 Moon at Apogee: 404510 km 26 23:30 Regulus 4.6°S of Moon 27 15:22 FIRST QUARTER MOON 29 05 Mercury at Greatest Elong: 24.9°W 29 13:04 Venus 3.9°S of Pollux 30 21 Mars at Aphelion: 1.66594 AU 31 10:05 Spica 3.3°S of MoonJun 01 06:22 Moon at Descending Node 02 03:35 Mars 0.1°S of Beehive 03 21:19 Antares 1.6°S of Moon 04 03:42 FULL MOON 04 11 Venus at Greatest Elong: 45.4°E 06 23:07 Moon at Perigee: 364860 km 09 20:19 Saturn 3.0°N of Moon 10 19:31 LAST QUARTER MOON 11 17:50 Mercury 5.9°S of Pleiades 13 11:05 Venus 0.5°N of Beehive 14 00:05 Moon at Ascending Node 14 06:33 Jupiter 1.5°S of Moon 16 00:47 Pleiades 1.8°N of Moon 16 20:16 Mercury 4.2°N of Aldebaran 16 20:39 Mercury 4.3°S of Moon 18 04:37 NEW MOON 20 09:10 Pollux 1.7°N of Moon 21 10:38 Beehive 3.6°S of Moon 21 14:58 Summer Solstice 22 00:47 Venus 3.7°S of Moon 22 10:09 Mars 3.8°S of Moon 22 18:30 Moon at Apogee: 405385 km 23 07:08 Regulus 4.4°S of Moon 26 07:50 FIRST QUARTER MOON 27 19 Mercury at Perihelion 27 19:08 Spica 3.1°S of Moon 28 12:22 Moon at Descending Node | Date GMT Event (h:m)Jul 01 05 Mercury at Superior Conjunction 01 06 Venus 3.6°N of Mars 01 07:20 Antares 1.5°S of Moon 03 11:39 FULL MOON 04 22:28 Moon at Perigee: 360151 km 06 19 Earth at Aphelion: 1.01668 AU 07 03:05 Saturn 2.7°N of Moon 10 01:48 LAST QUARTER MOON 10 05:21 Mars 0.6°N of Regulus 11 01:23 Moon at Ascending Node 11 21:18 Jupiter 2.2°S of Moon 13 06:31 Pleiades 1.7°N of Moon 14 22:33 Mercury 0.2°N of Beehive 16 08:05 Venus 1.7°S of Regulus 17 18:32 NEW MOON 19 08:56 Mercury 3.5°S of Moon 20 06:56 Moon at Apogee: 406291 km 20 13:53 Regulus 4.2°S of Moon 21 04:00 Mars 3.3°S of Moon 25 03:01 Spica 2.8°S of Moon 25 15:05 Moon at Descending Node 25 22:07 FIRST QUARTER MOON 27 11 Mercury 5.1°N of Venus 28 16 Delta-Aquarid Meteor Shower 28 17:11 Antares 1.3°S of Moon 28 18:21 Mercury 0.1°S of RegulusAug 01 18:31 FULL MOON 02 05:52 Moon at Perigee: 357311 km 03 10:21 Saturn 2.5°N of Moon 07 02:46 Moon at Ascending Node 08 00 Venus at Aphelion 08 09:41 Jupiter 2.9°S of Moon 08 10:28 LAST QUARTER MOON 09 12:16 Pleiades 1.5°N of Moon 10 02 Mercury at Greatest Elong: 27.4°E 10 18 Mercury at Aphelion 13 07 Perseid Meteor Shower 13 08 Mercury 4.7°S of Mars 13 11 Venus at Inferior Conjunction 13 21:36 Pollux 1.7°N of Moon 16 09:38 NEW MOON 16 11:55 Moon at Apogee: 406635 km 18 23:06 Mars 2.2°S of Moon 21 09:28 Spica 2.6°S of Moon 21 16:23 Moon at Descending Node 24 09:57 FIRST QUARTER MOON 25 01:29 Antares 1.1°S of Moon 27 08 Saturn at Opposition 30 15:51 Moon at Perigee: 357182 km 30 18:03 Saturn 2.5°N of Moon 31 01:35 FULL MOON Sep 03 07:44 Moon at Ascending Node 04 19:44 Jupiter 3.3°S of Moon 05 19:25 Pleiades 1.2°N of Moon 06 11 Mercury at Inferior Conjunction 06 22:21 LAST QUARTER MOON 10 03:32 Pollux 1.5°N of Moon 11 05:15 Beehive 3.6°S of Moon 12 15:42 Moon at Apogee: 406289 km 13 02:00 Regulus 4.1°S of Moon 15 01:40 NEW MOON 17 15:12 Spica 2.4°S of Moon 17 19:18 Moon at Descending Node 19 10 Neptune at Opposition 21 07:50 Antares 0.9°S of Moon 22 13 Mercury at Greatest Elong: 17.9°W 22 19:32 FIRST QUARTER MOON 23 06:50 Autumnal Equinox 23 18 Mercury at Perihelion 27 01:25 Saturn 2.7°N of Moon 28 01:05 Moon at Perigee: 359911 km 29 09:57 FULL MOON 30 16:49 Moon at Ascending Node Oct 02 03:16 Jupiter 3.4°S of Moon 03 04:25 Pleiades 1.1°N of Moon 06 13:48 LAST QUARTER MOON 07 10:23 Pollux 1.4°N of Moon 08 11:57 Beehive 3.7°S of Moon 09 06:08 Venus 2.3°S of Regulus 10 03:41 Moon at Apogee: 405426 km 10 08:41 Regulus 4.2°S of Moon 14 17:55 NEW MOON 14 17:59 Annular Solar Eclipse; mag=0.952 15 01:11 Moon at Descending Node 18 13:17 Antares 0.9°S of Moon 20 05 Mercury at Superior Conjunction 22 00 Orionid Meteor Shower 22 03:29 FIRST QUARTER MOON 23 22 Venus at Greatest Elong: 46.4°W 24 07:52 Saturn 2.8°N of Moon 26 02:53 Moon at Perigee: 364873 km 28 03:14 Moon at Ascending Node 28 20:14 Partial Lunar Eclipse; mag=0.122 28 20:24 FULL MOON 29 08:10 Jupiter 3.1°S of Moon 30 14:30 Pleiades 1.1°N of MoonNov 03 04 Jupiter at Opposition 03 18:31 Pollux 1.4°N of Moon 04 19:46 Beehive 3.7°S of Moon 05 08:37 LAST QUARTER MOON 06 00 S Taurid Meteor Shower 06 16:19 Regulus 4.2°S of Moon 06 21:49 Moon at Apogee: 404569 km 09 09:28 Venus 1.0°S of Moon: Occn. 11 05:09 Spica 2.4°S of Moon 11 08:49 Moon at Descending Node 13 00 N Taurid Meteor Shower 13 09:27 NEW MOON 13 18 Uranus at Opposition 16 21:17 Mercury 2.5°N of Antares 18 05 Mars in Conjunction with Sun 18 06 Leonid Meteor Shower 20 10:50 FIRST QUARTER MOON 20 14:02 Saturn 2.7°N of Moon 21 21:03 Moon at Perigee: 369824 km 24 11:02 Moon at Ascending Node 25 11:10 Jupiter 2.8°S of Moon 27 00:02 Pleiades 1.1°N of Moon 27 09:16 FULL MOON 28 09 Venus at Perihelion 29 10:27 Venus 3.9°N of SpicaDec 01 03:23 Pollux 1.6°N of Moon 02 04:21 Beehive 3.6°S of Moon 04 00:38 Regulus 4.0°S of Moon 04 14 Mercury at Greatest Elong: 21.3°E 04 18:42 Moon at Apogee: 404348 km 05 05:49 LAST QUARTER MOON 08 14:05 Spica 2.3°S of Moon 08 15:24 Moon at Descending Node 09 16:53 Venus 3.6°N of Moon 12 23:32 NEW MOON 14 05:18 Mercury 4.4°N of Moon 14 19 Geminid Meteor Shower 16 18:53 Moon at Perigee: 367900 km 17 21:58 Saturn 2.5°N of Moon 19 18:39 FIRST QUARTER MOON 20 17 Mercury at Perihelion 21 13:54 Moon at Ascending Node 22 03:28 Winter Solstice 22 14:20 Jupiter 2.6°S of Moon 22 19 Mercury at Inferior Conjunction 23 03 Ursid Meteor Shower 24 07:37 Pleiades 1.1°N of Moon 27 00:33 FULL MOON 27 22 Mercury 3.6°N of Mars 28 11:51 Pollux 1.7°N of Moon 29 12:45 Beehive 3.4°S of Moon 31 08:52 Regulus 3.8°S of Moon | |||||||
Terms Used in Astronomical Events Calendar
- Perihelion - instant when a planet is closest to the Sun
- Aphelion - instant when a planet is furthest from the Sun
- Perigee - instant when the Moon is closest to Earth
- Apogee - instant when the Moon is furthest from Earth
- Inferior Conjunction - instant when a planet (Mercury or Venus) passes between Earth and the Sun
- Superior Conjunction - instant when a planet (Mercury or Venus) passes on the opposite side of the Sun from Earth
- Greatest Elongation - the maximum angular separation between the Sun and the planet (Mercury or Venus) as seen from Earth
- during eastern elongation (E), the planet appears as an evening star;
- during western elongation (W), the planet appears as a morning star - Opposition - instant when a planet appears opposite the Sun as seen from Earth
- Conjunction - instant when a planet appears closest the Sun as seen from Earth
- Occultation - the Moon occults or eclipses a star or planet
- Ascending Node - point where the Moon crosses from the southern to northern portion of its orbit
- Descending Node - point where the Moon crosses from the northern to the southern portion of its orbit
- Aldebaran - bright star in the constellation Taurus
- Pollux - bright star in the constellation Gemini
- Regulus - bright star in the constellation Leo
- Spica - bright star in the constellation Virgo
- Antares - bright star in the constellation Scorpius
- Pleiades - bright star cluster in the constellation Taurus
- Beehive - bright star cluster in the constellation Cancer
Calendars of Astronomical Events: 2021 to 2030
Europe, Africa, and the Middle East
Below are links to calendars of astronomical events from 2021 to 2030 for five time zones
in Europe, Africa, and the Middle East.
Choose a time zone and click on a year to get a calendar of astronomical events for that year.
| Calendar of Astronomical Events - Europe, Africa, & Middle East | |||||||||||||||
| GMT | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| CET | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| EET | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| MSK | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| GST | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
- GMT = Greenwich Mean Time
- CET = Central European Time (= GMT + 1 hour)
- EET = Eastern European Time (= GMT + 2 hours)
- MSK = Moscow Time (= GMT + 3 hours)
- GST = Gulf Standard Time (= GMT + 4 hours)
- Time Zones Abbreviations
A time zone may have a different name in different countries. Note the difference in hours between a given time zone and Greenwich Mean Time to help in identification.
For other years and other time zones, visit: Calendars of Astronomical Events.