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