2021Calendar of Astronomical Events
2021Phases 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.
| 2021 Phases of the Moon | |||
| Eastern Standard Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| - | - | - | Jan 6 04:37 |
| Jan 13 00:00 | Jan 20 16:02 | Jan 28 14:16 | Feb 4 12:37 |
| Feb 11 14:06 | Feb 19 13:47 | Feb 27 03:17 | Mar 5 20:30 |
| Mar 13 05:21 | Mar 21 09:40 | Mar 28 13:48 | Apr 4 05:02 |
| Apr 11 21:31 | Apr 20 01:59 | Apr 26 22:31 | May 3 14:50 |
| May 11 14:00 | May 19 14:13 | May 26 06:14 t | Jun 2 02:24 |
| Jun 10 05:53 A | Jun 17 22:54 | Jun 24 13:40 | Jul 1 16:11 |
| Jul 9 20:17 | Jul 17 05:11 | Jul 23 21:37 | Jul 31 08:16 |
| Aug 8 08:50 | Aug 15 10:20 | Aug 22 07:02 | Aug 30 02:13 |
| Sep 6 19:52 | Sep 13 15:39 | Sep 20 18:55 | Sep 28 20:57 |
| Oct 6 06:05 | Oct 12 22:25 | Oct 20 09:57 | Oct 28 15:05 |
| Nov 4 16:15 | Nov 11 07:46 | Nov 19 03:58 p | Nov 27 07:28 |
| Dec 4 02:43 T | Dec 10 20:36 | Dec 18 23:36 | Dec 26 21:24 |
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
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.
| 2021Calendar of Astronomical Events | ||||||||
| Eastern Standard Time | ||||||||
| January - June | July - December | |||||||
Date EST Event (h:m)Jan 01 02:05 Beehive 2.3°S of Moon 02 09 Earth at Perihelion: 0.98325 AU 02 16:58 Regulus 4.7°S of Moon 03 10 Quadrantid Meteor Shower 06 04:37 LAST QUARTER MOON 09 10:39 Moon at Perigee: 367390 km 09 21:08 Antares 5.6°S of Moon 10 00 Mercury 1.6°S of Saturn 10 15:14 Moon at Descending Node 11 13 Mercury 1.4°S of Jupiter 11 15:12 Venus 1.5°N of Moon 13 00:00 NEW MOON 14 03:15 Mercury 2.3°N of Moon 20 16:02 FIRST QUARTER MOON 21 00:37 Mars 5.1°N of Moon 21 08:11 Moon at Apogee: 404361 km 23 21 Mercury at Greatest Elong: 18.6°E 23 21 Saturn in Conjunction with Sun 23 23:39 Aldebaran 4.7°S of Moon 24 16:47 Moon at Ascending Node 27 10:46 Pollux 3.8°N of Moon 28 09:50 Beehive 2.3°S of Moon 28 14:16 FULL MOON 28 20 Jupiter in Conjunction with Sun 28 21 Mercury at Perihelion 29 23:56 Regulus 4.6°S of MoonFeb 03 14:33 Moon at Perigee: 370127 km 04 12:37 LAST QUARTER MOON 06 03 Venus 0.4°S of Saturn 06 03:33 Antares 5.5°S of Moon 06 19:29 Moon at Descending Node 08 09 Mercury at Inferior Conjunction 11 09 Venus 0.4°S of Jupiter 11 14:06 NEW MOON 13 04 Mercury 4.6°N of Venus 15 09 Mercury 3.8°N of Jupiter 18 05:22 Moon at Apogee: 404467 km 18 17:47 Mars 3.7°N of Moon 19 13:47 FIRST QUARTER MOON 20 00 Venus at Aphelion 20 08:15 Aldebaran 5.0°S of Moon 20 20:44 Moon at Ascending Node 23 03 Mercury 4.0°N of Saturn 23 20:10 Pollux 3.7°N of Moon 24 19:16 Beehive 2.4°S of Moon 26 09:04 Regulus 4.6°S of Moon 27 03:17 FULL MOON Mar 02 00:19 Moon at Perigee: 365422 km 03 18:36 Mars 2.6°S of Pleiades 05 00 Mercury 0.3°N of Jupiter 05 08:58 Antares 5.2°S of Moon 05 19:56 Moon at Descending Node 05 20:30 LAST QUARTER MOON 06 06 Mercury at Greatest Elong: 27.3°W 09 18:02 Saturn 3.7°N of Moon 10 10:35 Jupiter 4.0°N of Moon 10 19 Neptune in Conjunction with Sun 10 20:02 Mercury 3.7°N of Moon 13 05:21 NEW MOON 13 21 Mercury at Aphelion 18 00:04 Moon at Apogee: 405253 km 19 12:48 Mars 1.9°N of Moon 19 16:13 Aldebaran 5.2°S of Moon 19 22:31 Moon at Ascending Node 20 04:37 Vernal Equinox 20 14:15 Mars 6.9°N of Aldebaran 21 09:40 FIRST QUARTER MOON 23 05:26 Pollux 3.5°N of Moon 24 04:58 Beehive 2.6°S of Moon 25 19:17 Regulus 4.7°S of Moon 26 01 Venus at Superior Conjunction 28 13:48 FULL MOON 29 10:52 Spica 6.5°S of Moon 30 01:12 Moon at Perigee: 360311 kmApr 01 15:49 Antares 4.9°S of Moon 01 21:41 Moon at Descending Node 04 05:02 LAST QUARTER MOON 06 03:34 Saturn 4.0°N of Moon 07 02:15 Jupiter 4.4°N of Moon 11 21:31 NEW MOON 14 12:47 Moon at Apogee: 406120 km 15 23:07 Aldebaran 5.4°S of Moon 16 00:53 Moon at Ascending Node 17 07:09 Mars 0.1°N of Moon: Occn. 18 21 Mercury at Superior Conjunction 19 13:18 Pollux 3.2°N of Moon 20 01:59 FIRST QUARTER MOON 20 13:25 Beehive 2.8°S of Moon 22 04:48 Regulus 4.9°S of Moon 22 07 Lyrid Meteor Shower 25 21:43 Spica 6.5°S of Moon 26 20 Mercury at Perihelion 26 22:31 FULL MOON 27 10:24 Moon at Perigee: 357379 km 29 01:07 Antares 4.8°S of Moon 29 04:17 Moon at Descending Node 30 16 Uranus in Conjunction with Sun May 03 12:02 Saturn 4.2°N of Moon 03 14:50 LAST QUARTER MOON 03 22:03 Mercury 2.1°S of Pleiades 04 16:00 Jupiter 4.6°N of Moon 04 20 Eta-Aquarid Meteor Shower 11 14:00 NEW MOON 11 16:54 Moon at Apogee: 406512 km 13 05:29 Moon at Ascending Node 13 12:59 Mercury 2.1°N of Moon 15 23:47 Mars 1.5°S of Moon 16 19:39 Pollux 3.1°N of Moon 17 01 Mercury at Greatest Elong: 22.0°E 17 20:08 Beehive 2.9°S of Moon 19 12:28 Regulus 5.0°S of Moon 19 14:13 FIRST QUARTER MOON 23 08:07 Spica 6.5°S of Moon 25 20:52 Moon at Perigee: 357310 km 26 06:14 FULL MOON 26 06:19 Total Lunar Eclipse; mag=1.009 26 11:55 Antares 4.8°S of Moon 26 14:38 Moon at Descending Node 28 22 Mercury 0.4°S of Venus 30 20:22 Saturn 4.2°N of Moon 31 06:41 Mars 5.2°S of PolluxJun 01 03:57 Jupiter 4.6°N of Moon 02 02:24 LAST QUARTER MOON 07 21:27 Moon at Apogee: 406230 km 09 11:42 Moon at Ascending Node 10 05:42 Annular Solar Eclipse; mag=0.943 10 05:53 NEW MOON 10 20 Mercury at Inferior Conjunction 12 01:44 Venus 1.5°S of Moon 12 08 Venus at Perihelion 13 01:19 Pollux 3.1°N of Moon 13 14:52 Mars 2.8°S of Moon 14 01:47 Beehive 2.9°S of Moon 15 18:28 Regulus 5.0°S of Moon 17 22:54 FIRST QUARTER MOON 20 22:32 Summer Solstice 21 10:57 Venus 5.1°S of Pollux 22 15:36 Mercury 1.8°N of Aldebaran 22 22:26 Antares 4.8°S of Moon 23 00:21 Mars 0.3°S of Beehive 23 01:07 Moon at Descending Node 23 04:58 Moon at Perigee: 359960 km 24 13:40 FULL MOON 27 04:30 Saturn 4.0°N of Moon 28 13:38 Jupiter 4.5°N of Moon | Date EST Event (h:m)Jul 01 16:11 LAST QUARTER MOON 02 21:45 Venus 0.1°N of Beehive 04 15 Mercury at Greatest Elong: 21.6°W 05 09:48 Moon at Apogee: 405342 km 05 18 Earth at Aphelion: 1.01673 AU 06 17:41 Moon at Ascending Node 06 17:52 Aldebaran 5.5°S of Moon 07 23:38 Mercury 3.7°S of Moon 09 20:17 NEW MOON 12 04:10 Venus 3.3°S of Moon 12 05:10 Mars 3.8°S of Moon 12 19 Mars at Aphelion: 1.66596 AU 13 00:02 Regulus 4.9°S of Moon 13 08 Venus 0.5°N of Mars 16 23:01 Spica 6.4°S of Moon 17 05:11 FIRST QUARTER MOON 20 07:06 Antares 4.7°S of Moon 20 08:22 Moon at Descending Node 21 05:30 Moon at Perigee: 364520 km 21 16:21 Venus 1.0°N of Regulus 23 20 Mercury at Perihelion 23 21:37 FULL MOON 24 11:42 Saturn 3.8°N of Moon 25 20:17 Jupiter 4.2°N of Moon 27 22 Delta-Aquarid Meteor Shower 29 09:09 Mars 0.6°N of Regulus 31 08:16 LAST QUARTER MOON Aug 01 09 Mercury at Superior Conjunction 02 00 Saturn at Opposition 02 02:35 Moon at Apogee: 404412 km 02 21:51 Moon at Ascending Node 03 01:18 Aldebaran 5.7°S of Moon 06 14:42 Pollux 3.1°N of Moon 08 08:50 NEW MOON 11 02:00 Venus 4.3°S of Moon 12 14 Perseid Meteor Shower 13 04:31 Spica 6.1°S of Moon 15 10:20 FIRST QUARTER MOON 16 11:04 Moon at Descending Node 16 13:34 Antares 4.5°S of Moon 17 04:23 Moon at Perigee: 369127 km 18 22 Mercury 0.1°S of Mars 19 18 Jupiter at Opposition 20 17:19 Saturn 3.7°N of Moon 21 23:52 Jupiter 4.0°N of Moon 22 07:02 FULL MOON 29 21:22 Moon at Apogee: 404100 km 30 00:13 Moon at Ascending Node 30 02:13 LAST QUARTER MOON Sep 02 23:04 Pollux 3.0°N of Moon 03 23:07 Beehive 2.9°S of Moon 05 09:32 Venus 1.4°N of Spica 05 19 Mercury at Aphelion 06 19:52 NEW MOON 09 11:01 Spica 5.9°S of Moon 09 21:09 Venus 4.1°S of Moon 11 05:05 Moon at Perigee: 368464 km 12 11:35 Moon at Descending Node 12 18:59 Antares 4.2°S of Moon 13 15:39 FIRST QUARTER MOON 13 23 Mercury at Greatest Elong: 26.8°E 14 03 Neptune at Opposition 16 21:37 Saturn 3.8°N of Moon 18 01:50 Jupiter 4.0°N of Moon 20 18:55 FULL MOON 20 21:00 Mercury 1.2°S of Spica 22 14:21 Autumnal Equinox 26 02:33 Moon at Ascending Node 26 16:44 Moon at Apogee: 404641 km 28 20:57 LAST QUARTER MOON 30 07:44 Pollux 2.8°N of MoonOct 01 08:07 Beehive 3.1°S of Moon 02 17 Venus at Aphelion 03 00:12 Regulus 4.9°S of Moon 06 06:05 NEW MOON 07 23 Mars in Conjunction with Sun 08 12:28 Moon at Perigee: 363388 km 09 11 Mercury at Inferior Conjunction 09 13:36 Venus 2.9°S of Moon 09 14:35 Moon at Descending Node 10 01:27 Antares 4.0°S of Moon 12 22:25 FIRST QUARTER MOON 14 02:12 Saturn 3.9°N of Moon 15 04:58 Jupiter 4.1°N of Moon 16 08:24 Venus 1.4°N of Antares 19 19 Mercury at Perihelion 20 09:57 FULL MOON 21 06 Orionid Meteor Shower 23 06:47 Moon at Ascending Node 24 10:30 Moon at Apogee: 405616 km 25 00 Mercury at Greatest Elong: 18.4°W 27 15:40 Pollux 2.6°N of Moon 28 15:05 LAST QUARTER MOON 28 16:32 Beehive 3.3°S of Moon 29 17 Venus at Greatest Elong: 47.0°E 30 09:33 Regulus 5.1°S of MoonNov 01 20:18 Mercury 3.7°N of Spica 03 13:40 Mercury 1.2°S of Moon: Occn. 04 16:15 NEW MOON 04 19 Uranus at Opposition 05 07 S Taurid Meteor Shower 05 17:23 Moon at Perigee: 358845 km 05 22:38 Moon at Descending Node 06 10:29 Antares 3.9°S of Moon 08 00:21 Venus 1.1°S of Moon: Occn. 10 09:27 Saturn 4.1°N of Moon 10 10 Mercury 1.0°N of Mars 11 07:46 FIRST QUARTER MOON 11 12:13 Jupiter 4.4°N of Moon 12 06 N Taurid Meteor Shower 17 13 Leonid Meteor Shower 19 03:58 FULL MOON 19 04:03 Partial Lunar Eclipse; mag=0.974 19 12:59 Moon at Ascending Node 20 21:14 Moon at Apogee: 406276 km 23 22:22 Pollux 2.5°N of Moon 24 23:32 Beehive 3.3°S of Moon 26 17:27 Regulus 5.2°S of Moon 27 07:28 LAST QUARTER MOON 29 00 Mercury at Superior Conjunction 30 17:04 Spica 5.9°S of MoonDec 03 09:58 Moon at Descending Node 04 02:33 Total Solar Eclipse; mag=1.037 04 02:43 NEW MOON 04 05:01 Moon at Perigee: 356794 km 06 19:48 Venus 1.9°N of Moon 07 20:52 Saturn 4.2°N of Moon 09 01:07 Jupiter 4.5°N of Moon 10 20:36 FIRST QUARTER MOON 14 02 Geminid Meteor Shower 16 19:12 Moon at Ascending Node 17 21:16 Moon at Apogee: 406322 km 18 23:36 FULL MOON 21 04:20 Pollux 2.6°N of Moon 21 10:59 Winter Solstice 22 05:28 Beehive 3.3°S of Moon 22 10 Ursid Meteor Shower 23 23:40 Regulus 5.1°S of Moon 26 21:24 LAST QUARTER MOON 27 04:15 Mars 4.4°N of Antares 28 01:58 Spica 5.8°S of Moon 29 00 Mercury 4.2°S of Venus 30 20:07 Moon at Descending Node 31 08:54 Antares 3.9°S of Moon 31 15:13 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.