2021Calendar of Astronomical Events
2021Phases of the Moon
Pacific Standard Time
The following table gives the date and time of the Moon's phases for the year. The times listed are for Pacific Standard Time(Greenwich Mean Time - 8 hours).If Daylight Saving Time is in effect, add one hour to the times listed.
| 2021 Phases of the Moon | |||
| Pacific Standard Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| - | - | - | Jan 6 01:37 |
| Jan 12 21:00 | Jan 20 13:02 | Jan 28 11:16 | Feb 4 09:37 |
| Feb 11 11:06 | Feb 19 10:47 | Feb 27 00:17 | Mar 5 17:30 |
| Mar 13 02:21 | Mar 21 06:40 | Mar 28 10:48 | Apr 4 02:02 |
| Apr 11 18:31 | Apr 19 22:59 | Apr 26 19:31 | May 3 11:50 |
| May 11 11:00 | May 19 11:13 | May 26 03:14 t | Jun 1 23:24 |
| Jun 10 02:53 A | Jun 17 19:54 | Jun 24 10:40 | Jul 1 13:11 |
| Jul 9 17:17 | Jul 17 02:11 | Jul 23 18:37 | Jul 31 05:16 |
| Aug 8 05:50 | Aug 15 07:20 | Aug 22 04:02 | Aug 29 23:13 |
| Sep 6 16:52 | Sep 13 12:39 | Sep 20 15:55 | Sep 28 17:57 |
| Oct 6 03:05 | Oct 12 19:25 | Oct 20 06:57 | Oct 28 12:05 |
| Nov 4 13:15 | Nov 11 04:46 | Nov 19 00:58 p | Nov 27 04:28 |
| Dec 3 23:43 T | Dec 10 17:36 | Dec 18 20:36 | Dec 26 18:24 |
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.
2021Calendar of Astronomical Events
Pacific Standard Time
The following table gives the date and time of the important astronomical events for the year. The times listed are for Pacific Standard Time(Greenwich Mean Time - 8 hours).If Daylight Saving Time is in effect, add one hour to the times listed. A key to astronomical terms appears below the calendar.
| 2021Calendar of Astronomical Events | ||||||||
| Pacific Standard Time | ||||||||
| January - June | July - December | |||||||
Date PST Event (h:m)Jan 02 06 Earth at Perihelion: 0.98325 AU 02 13:58 Regulus 4.7°S of Moon 03 07 Quadrantid Meteor Shower 06 01:37 LAST QUARTER MOON 09 07:39 Moon at Perigee: 367390 km 09 18:08 Antares 5.6°S of Moon 09 21 Mercury 1.6°S of Saturn 10 12:14 Moon at Descending Node 11 10 Mercury 1.4°S of Jupiter 11 12:12 Venus 1.5°N of Moon 12 21:00 NEW MOON 14 00:15 Mercury 2.3°N of Moon 20 13:02 FIRST QUARTER MOON 20 21:37 Mars 5.1°N of Moon 21 05:11 Moon at Apogee: 404361 km 23 18 Mercury at Greatest Elong: 18.6°E 23 18 Saturn in Conjunction with Sun 23 20:39 Aldebaran 4.7°S of Moon 24 13:47 Moon at Ascending Node 27 07:46 Pollux 3.8°N of Moon 28 06:50 Beehive 2.3°S of Moon 28 11:16 FULL MOON 28 17 Jupiter in Conjunction with Sun 28 18 Mercury at Perihelion 29 20:56 Regulus 4.6°S of MoonFeb 03 11:33 Moon at Perigee: 370127 km 04 09:37 LAST QUARTER MOON 06 00 Venus 0.4°S of Saturn 06 00:33 Antares 5.5°S of Moon 06 16:29 Moon at Descending Node 08 06 Mercury at Inferior Conjunction 11 06 Venus 0.4°S of Jupiter 11 11:06 NEW MOON 13 01 Mercury 4.6°N of Venus 15 06 Mercury 3.8°N of Jupiter 18 02:22 Moon at Apogee: 404467 km 18 14:47 Mars 3.7°N of Moon 19 10:47 FIRST QUARTER MOON 19 21 Venus at Aphelion 20 05:15 Aldebaran 5.0°S of Moon 20 17:44 Moon at Ascending Node 23 00 Mercury 4.0°N of Saturn 23 17:10 Pollux 3.7°N of Moon 24 16:16 Beehive 2.4°S of Moon 26 06:04 Regulus 4.6°S of Moon 27 00:17 FULL MOON Mar 01 21:19 Moon at Perigee: 365422 km 03 15:36 Mars 2.6°S of Pleiades 04 21 Mercury 0.3°N of Jupiter 05 05:58 Antares 5.2°S of Moon 05 16:56 Moon at Descending Node 05 17:30 LAST QUARTER MOON 06 03 Mercury at Greatest Elong: 27.3°W 09 15:02 Saturn 3.7°N of Moon 10 07:35 Jupiter 4.0°N of Moon 10 16 Neptune in Conjunction with Sun 10 17:02 Mercury 3.7°N of Moon 13 02:21 NEW MOON 13 18 Mercury at Aphelion 17 21:04 Moon at Apogee: 405253 km 19 09:48 Mars 1.9°N of Moon 19 13:13 Aldebaran 5.2°S of Moon 19 19:31 Moon at Ascending Node 20 01:37 Vernal Equinox 20 11:15 Mars 6.9°N of Aldebaran 21 06:40 FIRST QUARTER MOON 23 02:26 Pollux 3.5°N of Moon 24 01:58 Beehive 2.6°S of Moon 25 16:17 Regulus 4.7°S of Moon 25 22 Venus at Superior Conjunction 28 10:48 FULL MOON 29 07:52 Spica 6.5°S of Moon 29 22:12 Moon at Perigee: 360311 kmApr 01 12:49 Antares 4.9°S of Moon 01 18:41 Moon at Descending Node 04 02:02 LAST QUARTER MOON 06 00:34 Saturn 4.0°N of Moon 06 23:15 Jupiter 4.4°N of Moon 11 18:31 NEW MOON 14 09:47 Moon at Apogee: 406120 km 15 20:07 Aldebaran 5.4°S of Moon 15 21:53 Moon at Ascending Node 17 04:09 Mars 0.1°N of Moon: Occn. 18 18 Mercury at Superior Conjunction 19 10:18 Pollux 3.2°N of Moon 19 22:59 FIRST QUARTER MOON 20 10:25 Beehive 2.8°S of Moon 22 01:48 Regulus 4.9°S of Moon 22 04 Lyrid Meteor Shower 25 18:43 Spica 6.5°S of Moon 26 17 Mercury at Perihelion 26 19:31 FULL MOON 27 07:24 Moon at Perigee: 357379 km 28 22:07 Antares 4.8°S of Moon 29 01:17 Moon at Descending Node 30 13 Uranus in Conjunction with Sun May 03 09:02 Saturn 4.2°N of Moon 03 11:50 LAST QUARTER MOON 03 19:03 Mercury 2.1°S of Pleiades 04 13:00 Jupiter 4.6°N of Moon 04 17 Eta-Aquarid Meteor Shower 11 11:00 NEW MOON 11 13:54 Moon at Apogee: 406512 km 13 02:29 Moon at Ascending Node 13 09:59 Mercury 2.1°N of Moon 15 20:47 Mars 1.5°S of Moon 16 16:39 Pollux 3.1°N of Moon 16 22 Mercury at Greatest Elong: 22.0°E 17 17:08 Beehive 2.9°S of Moon 19 09:28 Regulus 5.0°S of Moon 19 11:13 FIRST QUARTER MOON 23 05:07 Spica 6.5°S of Moon 25 17:52 Moon at Perigee: 357310 km 26 03:14 FULL MOON 26 03:19 Total Lunar Eclipse; mag=1.009 26 08:55 Antares 4.8°S of Moon 26 11:38 Moon at Descending Node 28 19 Mercury 0.4°S of Venus 30 17:22 Saturn 4.2°N of Moon 31 03:41 Mars 5.2°S of PolluxJun 01 00:57 Jupiter 4.6°N of Moon 01 23:24 LAST QUARTER MOON 07 18:27 Moon at Apogee: 406230 km 09 08:42 Moon at Ascending Node 10 02:42 Annular Solar Eclipse; mag=0.943 10 02:53 NEW MOON 10 17 Mercury at Inferior Conjunction 11 22:44 Venus 1.5°S of Moon 12 05 Venus at Perihelion 12 22:19 Pollux 3.1°N of Moon 13 11:52 Mars 2.8°S of Moon 13 22:47 Beehive 2.9°S of Moon 15 15:28 Regulus 5.0°S of Moon 17 19:54 FIRST QUARTER MOON 20 19:32 Summer Solstice 21 07:57 Venus 5.1°S of Pollux 22 12:36 Mercury 1.8°N of Aldebaran 22 19:26 Antares 4.8°S of Moon 22 21:21 Mars 0.3°S of Beehive 22 22:07 Moon at Descending Node 23 01:58 Moon at Perigee: 359960 km 24 10:40 FULL MOON 27 01:30 Saturn 4.0°N of Moon 28 10:38 Jupiter 4.5°N of Moon | Date PST Event (h:m)Jul 01 13:11 LAST QUARTER MOON 02 18:45 Venus 0.1°N of Beehive 04 12 Mercury at Greatest Elong: 21.6°W 05 06:48 Moon at Apogee: 405342 km 05 15 Earth at Aphelion: 1.01673 AU 06 14:41 Moon at Ascending Node 06 14:52 Aldebaran 5.5°S of Moon 07 20:38 Mercury 3.7°S of Moon 09 17:17 NEW MOON 12 01:10 Venus 3.3°S of Moon 12 02:10 Mars 3.8°S of Moon 12 16 Mars at Aphelion: 1.66596 AU 12 21:02 Regulus 4.9°S of Moon 13 05 Venus 0.5°N of Mars 16 20:01 Spica 6.4°S of Moon 17 02:11 FIRST QUARTER MOON 20 04:06 Antares 4.7°S of Moon 20 05:22 Moon at Descending Node 21 02:30 Moon at Perigee: 364520 km 21 13:21 Venus 1.0°N of Regulus 23 17 Mercury at Perihelion 23 18:37 FULL MOON 24 08:42 Saturn 3.8°N of Moon 25 17:17 Jupiter 4.2°N of Moon 27 19 Delta-Aquarid Meteor Shower 29 06:09 Mars 0.6°N of Regulus 31 05:16 LAST QUARTER MOON Aug 01 06 Mercury at Superior Conjunction 01 21 Saturn at Opposition 01 23:35 Moon at Apogee: 404412 km 02 18:51 Moon at Ascending Node 02 22:18 Aldebaran 5.7°S of Moon 06 11:42 Pollux 3.1°N of Moon 08 05:50 NEW MOON 10 23:00 Venus 4.3°S of Moon 12 11 Perseid Meteor Shower 13 01:31 Spica 6.1°S of Moon 15 07:20 FIRST QUARTER MOON 16 08:04 Moon at Descending Node 16 10:34 Antares 4.5°S of Moon 17 01:23 Moon at Perigee: 369127 km 18 19 Mercury 0.1°S of Mars 19 15 Jupiter at Opposition 20 14:19 Saturn 3.7°N of Moon 21 20:52 Jupiter 4.0°N of Moon 22 04:02 FULL MOON 29 18:22 Moon at Apogee: 404100 km 29 21:13 Moon at Ascending Node 29 23:13 LAST QUARTER MOON Sep 02 20:04 Pollux 3.0°N of Moon 03 20:07 Beehive 2.9°S of Moon 05 06:32 Venus 1.4°N of Spica 05 16 Mercury at Aphelion 06 16:52 NEW MOON 09 08:01 Spica 5.9°S of Moon 09 18:09 Venus 4.1°S of Moon 11 02:05 Moon at Perigee: 368464 km 12 08:35 Moon at Descending Node 12 15:59 Antares 4.2°S of Moon 13 12:39 FIRST QUARTER MOON 13 20 Mercury at Greatest Elong: 26.8°E 14 00 Neptune at Opposition 16 18:37 Saturn 3.8°N of Moon 17 22:50 Jupiter 4.0°N of Moon 20 15:55 FULL MOON 20 18:00 Mercury 1.2°S of Spica 22 11:21 Autumnal Equinox 25 23:33 Moon at Ascending Node 26 13:44 Moon at Apogee: 404641 km 28 17:57 LAST QUARTER MOON 30 04:44 Pollux 2.8°N of MoonOct 01 05:07 Beehive 3.1°S of Moon 02 14 Venus at Aphelion 02 21:12 Regulus 4.9°S of Moon 06 03:05 NEW MOON 07 20 Mars in Conjunction with Sun 08 09:28 Moon at Perigee: 363388 km 09 08 Mercury at Inferior Conjunction 09 10:36 Venus 2.9°S of Moon 09 11:35 Moon at Descending Node 09 22:27 Antares 4.0°S of Moon 12 19:25 FIRST QUARTER MOON 13 23:12 Saturn 3.9°N of Moon 15 01:58 Jupiter 4.1°N of Moon 16 05:24 Venus 1.4°N of Antares 19 16 Mercury at Perihelion 20 06:57 FULL MOON 21 03 Orionid Meteor Shower 23 03:47 Moon at Ascending Node 24 07:30 Moon at Apogee: 405616 km 24 21 Mercury at Greatest Elong: 18.4°W 27 12:40 Pollux 2.6°N of Moon 28 12:05 LAST QUARTER MOON 28 13:32 Beehive 3.3°S of Moon 29 14 Venus at Greatest Elong: 47.0°E 30 06:33 Regulus 5.1°S of MoonNov 01 17:18 Mercury 3.7°N of Spica 03 10:40 Mercury 1.2°S of Moon: Occn. 04 13:15 NEW MOON 04 16 Uranus at Opposition 05 04 S Taurid Meteor Shower 05 14:23 Moon at Perigee: 358845 km 05 19:38 Moon at Descending Node 06 07:29 Antares 3.9°S of Moon 07 21:21 Venus 1.1°S of Moon: Occn. 10 06:27 Saturn 4.1°N of Moon 10 07 Mercury 1.0°N of Mars 11 04:46 FIRST QUARTER MOON 11 09:13 Jupiter 4.4°N of Moon 12 03 N Taurid Meteor Shower 17 10 Leonid Meteor Shower 19 00:58 FULL MOON 19 01:03 Partial Lunar Eclipse; mag=0.974 19 09:59 Moon at Ascending Node 20 18:14 Moon at Apogee: 406276 km 23 19:22 Pollux 2.5°N of Moon 24 20:32 Beehive 3.3°S of Moon 26 14:27 Regulus 5.2°S of Moon 27 04:28 LAST QUARTER MOON 28 21 Mercury at Superior Conjunction 30 14:04 Spica 5.9°S of MoonDec 03 06:58 Moon at Descending Node 03 23:33 Total Solar Eclipse; mag=1.037 03 23:43 NEW MOON 04 02:01 Moon at Perigee: 356794 km 06 16:48 Venus 1.9°N of Moon 07 17:52 Saturn 4.2°N of Moon 08 22:07 Jupiter 4.5°N of Moon 10 17:36 FIRST QUARTER MOON 13 23 Geminid Meteor Shower 16 16:12 Moon at Ascending Node 17 18:16 Moon at Apogee: 406322 km 18 20:36 FULL MOON 21 01:20 Pollux 2.6°N of Moon 21 07:59 Winter Solstice 22 02:28 Beehive 3.3°S of Moon 22 07 Ursid Meteor Shower 23 20:40 Regulus 5.1°S of Moon 26 18:24 LAST QUARTER MOON 27 01:15 Mars 4.4°N of Antares 27 22:58 Spica 5.8°S of Moon 28 21 Mercury 4.2°S of Venus 30 17:07 Moon at Descending Node 31 05:54 Antares 3.9°S of Moon 31 12:13 Mars 1.0°N of Moon: Occn. | |||||||
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.