2021 Sky Event Almanac
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 (Coordinated Universal Time − 6 hours) . This time zone may have different names in different countries. If Daylight Saving Time is in effect, add one hour to the times listed. A key to astronomical terms appears below the almanac.
| 2021 Sky Event Almanac | ||||||||
| Central Standard Time | ||||||||
| January - June | July - December | |||||||
Date CST Event
(h:m)
Jan 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
10 14:14 Moon at Descending Node
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
21 07:11 Moon at Apogee: 404361 km
23 20 Mercury at Greatest Elong: 18.6°E
23 20 Saturn in Conjunction with Sun
24 15:47 Moon at Ascending Node
27 09:46 Pollux 3.8°N 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 Moon
Feb 03 13:33 Moon at Perigee: 370127 km
04 11:37 LAST QUARTER MOON
06 18:29 Moon at Descending Node
08 08 Mercury at Inferior Conjunction
10 05:16 Saturn 3.4°N of Moon
11 13:06 NEW MOON
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 19:44 Moon at Ascending Node
23 02 Mercury 4.0°N of Saturn
23 19:10 Pollux 3.7°N 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 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 21:31 Moon at Ascending Node
20 03:37 Vernal Equinox
21 08:40 FIRST QUARTER MOON
23 04:26 Pollux 3.5°N of Moon
25 18:17 Regulus 4.7°S of Moon
26 00 Venus at Superior Conjunction
28 12:48 FULL MOON
30 00:12 Moon at Perigee: 360311 km
Apr 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 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
22 06 Lyrid Meteor Shower
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
19 13:13 FIRST QUARTER 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
Jun 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
17 21:54 FIRST QUARTER MOON
20 21:32 Summer Solstice
22 21:26 Antares 4.8°S of Moon
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
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
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
13 07 Venus 0.5°N of Mars
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
06 13:42 Pollux 3.1°N of Moon
08 07:50 NEW MOON
09 18:42 Mars 4.3°S of Moon
11 01:00 Venus 4.3°S of Moon
12 13 Perseid Meteor Shower
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
05 08:32 Venus 1.4°N of Spica
05 18 Mercury at Aphelion
06 18:52 NEW 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 Moon
Oct 02 16 Venus at Aphelion
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
22 23:45 Pleiades 4.5°N of Moon
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
29 16 Venus at Greatest Elong: 47.0°E
Nov 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
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 06:21 Pleiades 4.5°N of Moon
19 11:59 Moon at Ascending Node
20 20:14 Moon at Apogee: 406276 km
23 21:22 Pollux 2.5°N of Moon
27 06:28 LAST QUARTER MOON
28 23 Mercury at Superior Conjunction
Dec 02 18:28 Mars 0.7°S of Moon: Occn.
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 12:30 Pleiades 4.5°N of Moon
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 09 Ursid Meteor Shower
26 20:24 LAST QUARTER MOON
27 03:15 Mars 4.4°N of Antares
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 Sky Event Almanac
- 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
2021 Phases 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 (Coordinated Universal Time − 6 hours) . This time zone may have different names in different countries. 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 06 03:37 |
| Jan 12 23:00 | Jan 20 15:02 | Jan 28 13:16 | Feb 04 11:37 |
| Feb 11 13:06 | Feb 19 12:47 | Feb 27 02:17 | Mar 05 19:30 |
| Mar 13 04:21 | Mar 21 08:40 | Mar 28 12:48 | Apr 04 04:02 |
| Apr 11 20:31 | Apr 20 00:59 | Apr 26 21:31 | May 03 13:50 |
| May 11 13:00 | May 19 13:13 | May 26 05:14 t | Jun 02 01:24 |
| Jun 10 04:53 A | Jun 17 21:54 | Jun 24 12:40 | Jul 01 15:11 |
| Jul 09 19:17 | Jul 17 04:11 | Jul 23 20:37 | Jul 31 07:16 |
| Aug 08 07:50 | Aug 15 09:20 | Aug 22 06:02 | Aug 30 01:13 |
| Sep 06 18:52 | Sep 13 14:39 | Sep 20 17:55 | Sep 28 19:57 |
| Oct 06 05:05 | Oct 12 21:25 | Oct 20 08:57 | Oct 28 14:05 |
| Nov 04 15:15 | Nov 11 06:46 | Nov 19 02:58 p | Nov 27 06:28 |
| Dec 04 01:43 T | Dec 10 19:36 | Dec 18 22:36 | Dec 26 20:24 |
For a collection of images showing the Moon's phases see: Phases of the Moon Photo Gallery.
The Phases of the Moon table also shows when an eclipse takes place. 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 Phases of the Moon table. 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.
Solar Eclipses
The following table contains links to a series of web pages covering the 21st Century. Each one summarizes ten years of solar eclipses. Every eclipse has links to a global visibility map, an interactive Google map, tables, and additional information.
| Decade Pages of Solar Eclipses | |||||
| Decades | |||||
|---|---|---|---|---|---|
| 2001-2010 | 2011-2020 | 2021-2030 | 2031-2040 | 2041-2050 | |
| 2051-2060 | 2061-2070 | 2071-2080 | 2081-2090 | 2091-2100 | |
Lunar Eclipses
The following table contains links to a series of web pages covering the 21st Century. Each one summarizes ten years of lunar eclipses. Every eclipse has links to an eclipse diagram, a global visibility map, tables, and additional information.
| Decade Pages of Lunar Eclipses | |||||
| Decades | |||||
|---|---|---|---|---|---|
| 2001-2010 | 2011-2020 | 2021-2030 | 2031-2040 | 2041-2050 | |
| 2051-2060 | 2061-2070 | 2071-2080 | 2081-2090 | 2091-2100 | |
Sky Event Almanacs: 2021 to 2030
The Americas
Below are links to sky event almanacs from 2021 to 2030 for eight time zones in the Americas.
Choose a time zone and click on a year to get a sky event almanac for that year.
| Sky Event Almanacs - The Americas | |||||||||||||||
| ART | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| 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 | |||||
- ART = Argentina Time (= UTC - 3 hours)
- AST = Atlantic Standard Time (= UTC - 4 hours)
- EST = Eastern Standard Time (= UTC - 5 hours)
- CST = Central Standard Time (= UTC - 6 hours)
- MST = Mountain Standard Time (= UTC - 7 hours)
- PST = Pacific Standard Time (= UTC - 8 hours)
- AKST = Alaskan Standard Time (= UTC - 9 hours)
- HST = Hawaiian Standard Time (= UTC - 10 hours)
(where UTC = Coordinated Universal 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 Coordinated Universal Time to help in identification.
For other years and other time zones, visit: Sky Event Almanacs.
Accuracy of the Sky Event Almanacs
The goal of the Sky Event Almanacs is to present a wide range of solar system phenomena with reasonable accuracy. In general, events listed to the nearest hour are accurate to ± 30 minutes. Events listed with a precision in hours and minutes (i.e., hh:mm) are typically accurate to ± 5 minutes or less.
The following table gives a more detailed breakdown of the accuracy of times for various astronomical events.
| Accuracy of the Sky Event Almanacs | |
| Solstice/Equinox (Earth) | ± 0.5 minute |
| Aphelion/Perihelion (Earth) | ± 30 minutes; ± 0.00001 AU |
| Solar and Lunar Eclipses | ± 0.5 minute |
| Phases of the Moon | ± 0.5 minute |
| Moon at Nodes | ± 2 minutes |
| Apogee/Perigee of Moon | ± 5 minutes; ± 5 kilometers |
| Conjunctions of Moon with Star or Planet | ± 10 minutes |
| Conjunctions of Planet with Planet | ± 3 hours |
| Inferior/Superior Conjunctions (Mercury & Venus) | ± 30 minutes |
| Greatest Elongation (Mercury & Venus) | ± 30 minutes |
| Opposition/Conjunction (Outer Planets) | ± 3 hours |
| Aphelion/Perihelion of Planets | ± 30 minutes |
Fifty Year Almanac of Astronomical Events - 2021 to 2070
For more information and sample pages, see Fifty Year Almanac of Astronomical Events - 2021 To 2070.
Acknowledgements
All calculations are by Fred Espenak and he assumes full responsibility for their accuracy. Algorithms used in predicting many of the astronomical events are based on Astronomical Algorithms by Jean Meeus (Willmann-Bell Inc. Richmond 1998).
Permission is freely granted to reproduce this data when accompanied by the acknowledgment:
- "Sky Event Almanacs Courtesy of Fred Espenak, www.AstroPixels.com".
Return to: Sky Event Almanacs
Return to: Planetary Ephemeris Data
Useful External Links
Interactive Sky Chart (Sky and Telescope)
Sky Maps (sky-map.org)
Astronomical Almanac (Sky and Telescope)
Weather Forecast for Astronomy (Clear Outside)
GOES-East Images (NOAA-GOES)
Astronomy Tools (Astronomy Tools)