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