2023Calendar of Astronomical Events
2023Phases of the Moon
Eastern Standard Time
The following table gives the date and time of the Moon's phases for the year. The times listed are for Eastern Standard Time(Greenwich Mean Time - 5 hours).If Daylight Saving Time is in effect, add one hour to the times listed.
| 2023 Phases of the Moon | |||
| Eastern Standard Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| - | - | Jan 6 18:08 | Jan 14 21:10 |
| Jan 21 15:53 | Jan 28 10:19 | Feb 5 13:29 | Feb 13 11:01 |
| Feb 20 02:06 | Feb 27 03:06 | Mar 7 07:40 | Mar 14 21:08 |
| Mar 21 12:23 | Mar 28 21:32 | Apr 5 23:35 | Apr 13 04:11 |
| Apr 19 23:12 H | Apr 27 16:20 | May 5 12:34 n | May 12 09:28 |
| May 19 10:53 | May 27 10:22 | Jun 3 22:42 | Jun 10 14:31 |
| Jun 17 23:37 | Jun 26 02:50 | Jul 3 06:39 | Jul 9 20:48 |
| Jul 17 13:32 | Jul 25 17:07 | Aug 1 13:31 | Aug 8 05:28 |
| Aug 16 04:38 | Aug 24 04:57 | Aug 30 20:35 | Sep 6 17:21 |
| Sep 14 20:40 | Sep 22 14:32 | Sep 29 04:57 | Oct 6 08:48 |
| Oct 14 12:55 A | Oct 21 22:29 | Oct 28 15:24 p | Nov 5 03:37 |
| Nov 13 04:27 | Nov 20 05:50 | Nov 27 04:16 | Dec 5 00:49 |
| Dec 12 18:32 | Dec 19 13:39 | Dec 26 19:33 | - |
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
Eastern Standard Time
The following table gives the date and time of the important astronomical events for the year. The times listed are for Eastern Standard Time(Greenwich Mean Time - 5 hours).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 | ||||||||
| Eastern Standard Time | ||||||||
| January - June | July - December | |||||||
Date EST Event (h:m)Jan 01 10:25 Moon at Ascending Node 02 15 Mercury at Perihelion 02 20:24 Pleiades 2.6°N of Moon 03 14:35 Mars 0.5°N of Moon: Occn. 03 22 Quadrantid Meteor Shower 04 11 Earth at Perihelion: 0.98329 AU 06 18:08 FULL MOON 07 08 Mercury at Inferior Conjunction 07 08:40 Pollux 1.9°N of Moon 08 04:19 Moon at Apogee: 406459 km 08 10:23 Beehive 3.6°S of Moon 10 06:38 Regulus 4.6°S of Moon 14 16:59 Spica 3.9°S of Moon 14 21:10 LAST QUARTER MOON 16 01:32 Moon at Descending Node 18 04:32 Antares 2.1°S of Moon 20 07 Jupiter at Perihelion: 4.95101 AU 21 15:53 NEW MOON 21 15:58 Moon at Perigee: 356570 km 22 17 Venus 0.3°S of Saturn 23 02:22 Saturn 3.8°N of Moon 23 03:20 Venus 3.5°N of Moon 25 21:00 Jupiter 1.8°N of Moon 28 10:19 FIRST QUARTER MOON 28 11:05 Moon at Ascending Node 30 01 Mercury at Greatest Elong: 25.0°W 30 02:21 Pleiades 2.4°N of Moon 30 23:24 Mars 0.1°N of Moon: Occn.Feb 03 14:47 Pollux 1.9°N of Moon 04 03:55 Moon at Apogee: 406476 km 04 16:32 Beehive 3.5°S of Moon 05 13:29 FULL MOON 06 12:44 Regulus 4.5°S of Moon 10 23:23 Spica 3.6°S of Moon 12 02:31 Moon at Descending Node 13 11:01 LAST QUARTER MOON 14 13:09 Antares 1.9°S of Moon 15 15 Mercury at Aphelion 16 11 Saturn in Conjunction with Sun 18 15:53 Mercury 3.6°N of Moon 19 04:06 Moon at Perigee: 358267 km 20 02:06 NEW MOON 22 02:57 Venus 2.1°N of Moon 22 16:58 Jupiter 1.2°N of Moon: Occn. 24 13:56 Moon at Ascending Node 26 09:42 Pleiades 2.1°N of Moon 27 03:06 FIRST QUARTER MOON 27 23:32 Mars 1.1°S of Moon: Occn.Mar 01 23 Venus 0.5°N of Jupiter 02 09 Mercury 0.9°S of Saturn 02 21:10 Pollux 1.7°N of Moon 03 13:01 Moon at Apogee: 405890 km 03 22:56 Beehive 3.6°S of Moon 05 19:08 Regulus 4.5°S of Moon 07 07:40 FULL MOON 10 05:06 Spica 3.4°S of Moon 11 03:53 Moon at Descending Node 13 19:21 Antares 1.6°S of Moon 14 21:08 LAST QUARTER MOON 15 18 Neptune in Conjunction with Sun 17 06 Mercury at Superior Conjunction 19 10:16 Moon at Perigee: 362698 km 19 10:20 Saturn 3.6°N of Moon 20 16:25 Vernal Equinox 21 12:23 NEW MOON 23 21:08 Moon at Ascending Node 24 05:28 Venus 0.1°N of Moon: Occn. 25 18:42 Pleiades 1.9°N of Moon 27 23 Mercury 1.3°N of Jupiter 28 08:16 Mars 2.3°S of Moon 28 21:32 FIRST QUARTER MOON 30 04:23 Pollux 1.6°N of Moon 31 06:07 Beehive 3.8°S of Moon 31 06:18 Moon at Apogee: 404921 km 31 15 Mercury at Perihelion Apr 02 02:22 Regulus 4.6°S of Moon 05 23:35 FULL MOON 06 11:45 Spica 3.3°S of Moon 07 08:51 Moon at Descending Node 10 00:50 Antares 1.5°S of Moon 10 23:42 Venus 2.5°S of Pleiades 11 16 Jupiter in Conjunction with Sun 11 17 Mercury at Greatest Elong: 19.5°E 13 04:11 LAST QUARTER MOON 15 21:22 Moon at Perigee: 367967 km 15 22:47 Saturn 3.5°N of Moon 17 11 Venus at Perihelion 19 04:08 Venus 7.3°N of Aldebaran 19 23:12 NEW MOON 19 23:17 Hybrid Solar Eclipse; mag=1.013 20 06:32 Moon at Ascending Node 22 04:14 Pleiades 1.9°N of Moon 22 20 Lyrid Meteor Shower 23 08:03 Venus 1.3°S of Moon 25 21:18 Mars 3.2°S of Moon 26 12:26 Pollux 1.5°N of Moon 27 14:02 Beehive 3.8°S of Moon 27 16:20 FIRST QUARTER MOON 28 01:43 Moon at Apogee: 404300 km 29 10:21 Regulus 4.7°S of MoonMay 01 18 Mercury at Inferior Conjunction 03 19:55 Spica 3.3°S of Moon 04 16:57 Moon at Descending Node 05 09 Eta-Aquarid Meteor Shower 05 12:23 Pen. Lunar Eclipse; mag=0.964 05 12:34 FULL MOON 07 07:35 Antares 1.5°S of Moon 08 06:27 Mars 4.9°S of Pollux 09 16 Uranus in Conjunction with Sun 10 23:57 Moon at Perigee: 369345 km 12 09:28 LAST QUARTER MOON 13 08:04 Saturn 3.3°N of Moon 17 08 Mercury 6.2°N of Jupiter 17 08:15 Jupiter 0.8°S of Moon: Occn. 17 14:36 Moon at Ascending Node 17 20:34 Mercury 3.6°S of Moon 19 10:53 NEW MOON 23 07:08 Venus 2.2°S of Moon 23 20:37 Pollux 1.6°N of Moon 24 12:32 Mars 3.8°S of Moon 24 22:06 Beehive 3.8°S of Moon 25 20:39 Moon at Apogee: 404510 km 26 18:30 Regulus 4.6°S of Moon 27 10:22 FIRST QUARTER MOON 29 00 Mercury at Greatest Elong: 24.9°W 29 08:04 Venus 3.9°S of Pollux 30 16 Mars at Aphelion: 1.66594 AU 31 05:05 Spica 3.3°S of MoonJun 01 01:22 Moon at Descending Node 01 22:35 Mars 0.1°S of Beehive 03 16:19 Antares 1.6°S of Moon 03 22:42 FULL MOON 04 06 Venus at Greatest Elong: 45.4°E 06 18:07 Moon at Perigee: 364860 km 09 15:19 Saturn 3.0°N of Moon 10 14:31 LAST QUARTER MOON 11 12:50 Mercury 5.9°S of Pleiades 13 06:05 Venus 0.5°N of Beehive 13 19:05 Moon at Ascending Node 14 01:33 Jupiter 1.5°S of Moon 15 19:47 Pleiades 1.8°N of Moon 16 15:16 Mercury 4.2°N of Aldebaran 16 15:39 Mercury 4.3°S of Moon 17 23:37 NEW MOON 20 04:10 Pollux 1.7°N of Moon 21 05:38 Beehive 3.6°S of Moon 21 09:58 Summer Solstice 21 19:47 Venus 3.7°S of Moon 22 05:09 Mars 3.8°S of Moon 22 13:30 Moon at Apogee: 405385 km 23 02:08 Regulus 4.4°S of Moon 26 02:50 FIRST QUARTER MOON 27 14 Mercury at Perihelion 27 14:08 Spica 3.1°S of Moon 28 07:22 Moon at Descending Node | Date EST Event (h:m)Jul 01 00 Mercury at Superior Conjunction 01 01 Venus 3.6°N of Mars 01 02:20 Antares 1.5°S of Moon 03 06:39 FULL MOON 04 17:28 Moon at Perigee: 360151 km 06 14 Earth at Aphelion: 1.01668 AU 06 22:05 Saturn 2.7°N of Moon 09 20:48 LAST QUARTER MOON 10 00:21 Mars 0.6°N of Regulus 10 20:23 Moon at Ascending Node 11 16:18 Jupiter 2.2°S of Moon 13 01:31 Pleiades 1.7°N of Moon 14 17:33 Mercury 0.2°N of Beehive 16 03:05 Venus 1.7°S of Regulus 17 13:32 NEW MOON 19 03:56 Mercury 3.5°S of Moon 20 01:56 Moon at Apogee: 406291 km 20 08:53 Regulus 4.2°S of Moon 20 23:00 Mars 3.3°S of Moon 24 22:01 Spica 2.8°S of Moon 25 10:05 Moon at Descending Node 25 17:07 FIRST QUARTER MOON 27 06 Mercury 5.1°N of Venus 28 11 Delta-Aquarid Meteor Shower 28 12:11 Antares 1.3°S of Moon 28 13:21 Mercury 0.1°S of RegulusAug 01 13:31 FULL MOON 02 00:52 Moon at Perigee: 357311 km 03 05:21 Saturn 2.5°N of Moon 06 21:46 Moon at Ascending Node 07 19 Venus at Aphelion 08 04:41 Jupiter 2.9°S of Moon 08 05:28 LAST QUARTER MOON 09 07:16 Pleiades 1.5°N of Moon 09 21 Mercury at Greatest Elong: 27.4°E 10 13 Mercury at Aphelion 13 02 Perseid Meteor Shower 13 03 Mercury 4.7°S of Mars 13 06 Venus at Inferior Conjunction 13 16:36 Pollux 1.7°N of Moon 16 04:38 NEW MOON 16 06:55 Moon at Apogee: 406635 km 18 18:06 Mars 2.2°S of Moon 21 04:28 Spica 2.6°S of Moon 21 11:23 Moon at Descending Node 24 04:57 FIRST QUARTER MOON 24 20:29 Antares 1.1°S of Moon 27 03 Saturn at Opposition 30 10:51 Moon at Perigee: 357182 km 30 13:03 Saturn 2.5°N of Moon 30 20:35 FULL MOON Sep 03 02:44 Moon at Ascending Node 04 14:44 Jupiter 3.3°S of Moon 05 14:25 Pleiades 1.2°N of Moon 06 06 Mercury at Inferior Conjunction 06 17:21 LAST QUARTER MOON 09 22:32 Pollux 1.5°N of Moon 11 00:15 Beehive 3.6°S of Moon 12 10:42 Moon at Apogee: 406289 km 12 21:00 Regulus 4.1°S of Moon 14 20:40 NEW MOON 17 10:12 Spica 2.4°S of Moon 17 14:18 Moon at Descending Node 19 05 Neptune at Opposition 21 02:50 Antares 0.9°S of Moon 22 08 Mercury at Greatest Elong: 17.9°W 22 14:32 FIRST QUARTER MOON 23 01:50 Autumnal Equinox 23 13 Mercury at Perihelion 26 20:25 Saturn 2.7°N of Moon 27 20:05 Moon at Perigee: 359911 km 29 04:57 FULL MOON 30 11:49 Moon at Ascending Node Oct 01 22:16 Jupiter 3.4°S of Moon 02 23:25 Pleiades 1.1°N of Moon 06 08:48 LAST QUARTER MOON 07 05:23 Pollux 1.4°N of Moon 08 06:57 Beehive 3.7°S of Moon 09 01:08 Venus 2.3°S of Regulus 09 22:41 Moon at Apogee: 405426 km 10 03:41 Regulus 4.2°S of Moon 14 12:55 NEW MOON 14 12:59 Annular Solar Eclipse; mag=0.952 14 20:11 Moon at Descending Node 18 08:17 Antares 0.9°S of Moon 20 00 Mercury at Superior Conjunction 21 19 Orionid Meteor Shower 21 22:29 FIRST QUARTER MOON 23 17 Venus at Greatest Elong: 46.4°W 24 02:52 Saturn 2.8°N of Moon 25 21:53 Moon at Perigee: 364873 km 27 22:14 Moon at Ascending Node 28 15:14 Partial Lunar Eclipse; mag=0.122 28 15:24 FULL MOON 29 03:10 Jupiter 3.1°S of Moon 30 09:30 Pleiades 1.1°N of MoonNov 02 23 Jupiter at Opposition 03 13:31 Pollux 1.4°N of Moon 04 14:46 Beehive 3.7°S of Moon 05 03:37 LAST QUARTER MOON 05 19 S Taurid Meteor Shower 06 11:19 Regulus 4.2°S of Moon 06 16:49 Moon at Apogee: 404569 km 09 04:28 Venus 1.0°S of Moon: Occn. 11 00:09 Spica 2.4°S of Moon 11 03:49 Moon at Descending Node 12 19 N Taurid Meteor Shower 13 04:27 NEW MOON 13 13 Uranus at Opposition 16 16:17 Mercury 2.5°N of Antares 18 00 Mars in Conjunction with Sun 18 01 Leonid Meteor Shower 20 05:50 FIRST QUARTER MOON 20 09:02 Saturn 2.7°N of Moon 21 16:03 Moon at Perigee: 369824 km 24 06:02 Moon at Ascending Node 25 06:10 Jupiter 2.8°S of Moon 26 19:02 Pleiades 1.1°N of Moon 27 04:16 FULL MOON 28 04 Venus at Perihelion 29 05:27 Venus 3.9°N of Spica 30 22:23 Pollux 1.6°N of MoonDec 01 23:21 Beehive 3.6°S of Moon 03 19:38 Regulus 4.0°S of Moon 04 09 Mercury at Greatest Elong: 21.3°E 04 13:42 Moon at Apogee: 404348 km 05 00:49 LAST QUARTER MOON 08 09:05 Spica 2.3°S of Moon 08 10:24 Moon at Descending Node 09 11:53 Venus 3.6°N of Moon 12 18:32 NEW MOON 14 00:18 Mercury 4.4°N of Moon 14 14 Geminid Meteor Shower 16 13:53 Moon at Perigee: 367900 km 17 16:58 Saturn 2.5°N of Moon 19 13:39 FIRST QUARTER MOON 20 12 Mercury at Perihelion 21 08:54 Moon at Ascending Node 21 22:28 Winter Solstice 22 09:20 Jupiter 2.6°S of Moon 22 14 Mercury at Inferior Conjunction 22 22 Ursid Meteor Shower 24 02:37 Pleiades 1.1°N of Moon 26 19:33 FULL MOON 27 17 Mercury 3.6°N of Mars 28 06:51 Pollux 1.7°N of Moon 29 07:45 Beehive 3.4°S of Moon 31 03:52 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
The Americas
Below are links to calendars of astronomical events from 2021 to 2030 for seven time zones in the Americas.
Choose a time zone and click on a year to get a calendar of astronomical events for that year.
| Calendars of Astronomical Events - The Americas | |||||||||||||||
| AST | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| EST | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| CST | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| MST | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| PST | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| AKST | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| HST | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
- AST = Atlantic Standard Time (= GMT - 4 hours)
- EST = Eastern Standard Time (= GMT - 5 hours)
- CST = Central Standard Time (= GMT - 6 hours)
- MST = Mountain Standard Time (= GMT - 7 hours)
- PST = Pacific Standard Time (= GMT - 8 hours)
- AKST = Alaskan Standard Time (= GMT - 9 hours)
- HST = Hawaiian Standard Time (= GMT - 10 hours)
(where GMT = Greenwich Mean Time)
- 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.