2021 Sky Event Almanac
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 (Coordinated Universal Time − 8 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 | ||||||||
| 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
10 12:14 Moon at Descending Node
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
21 05:11 Moon at Apogee: 404361 km
23 18 Mercury at Greatest Elong: 18.6°E
23 18 Saturn in Conjunction with Sun
24 13:47 Moon at Ascending Node
27 07:46 Pollux 3.8°N 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 Moon
Feb 03 11:33 Moon at Perigee: 370127 km
04 09:37 LAST QUARTER MOON
06 16:29 Moon at Descending Node
08 06 Mercury at Inferior Conjunction
10 03:16 Saturn 3.4°N of Moon
11 11:06 NEW MOON
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 17:44 Moon at Ascending Node
23 00 Mercury 4.0°N of Saturn
23 17:10 Pollux 3.7°N 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 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 19:31 Moon at Ascending Node
20 01:37 Vernal Equinox
21 06:40 FIRST QUARTER MOON
23 02:26 Pollux 3.5°N of Moon
25 16:17 Regulus 4.7°S of Moon
25 22 Venus at Superior Conjunction
28 10:48 FULL MOON
29 22:12 Moon at Perigee: 360311 km
Apr 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 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
22 04 Lyrid Meteor Shower
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
19 11:13 FIRST QUARTER 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
Jun 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
17 19:54 FIRST QUARTER MOON
20 19:32 Summer Solstice
22 19:26 Antares 4.8°S of Moon
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
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
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
13 05 Venus 0.5°N of Mars
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
06 11:42 Pollux 3.1°N of Moon
08 05:50 NEW MOON
09 16:42 Mars 4.3°S of Moon
10 23:00 Venus 4.3°S of Moon
12 11 Perseid Meteor Shower
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
05 06:32 Venus 1.4°N of Spica
05 16 Mercury at Aphelion
06 16:52 NEW 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 Moon
Oct 02 14 Venus at Aphelion
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
22 21:45 Pleiades 4.5°N of Moon
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
29 14 Venus at Greatest Elong: 47.0°E
Nov 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
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 04:21 Pleiades 4.5°N of Moon
19 09:59 Moon at Ascending Node
20 18:14 Moon at Apogee: 406276 km
23 19:22 Pollux 2.5°N of Moon
27 04:28 LAST QUARTER MOON
28 21 Mercury at Superior Conjunction
Dec 02 16:28 Mars 0.7°S of Moon: Occn.
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 10:30 Pleiades 4.5°N of Moon
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 07 Ursid Meteor Shower
26 18:24 LAST QUARTER MOON
27 01:15 Mars 4.4°N of Antares
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.
|
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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
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 (Coordinated Universal Time − 8 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 | |||
| Pacific Standard Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| - | - | - | Jan 06 01:37 |
| Jan 12 21:00 | Jan 20 13:02 | Jan 28 11:16 | Feb 04 09:37 |
| Feb 11 11:06 | Feb 19 10:47 | Feb 27 00:17 | Mar 05 17:30 |
| Mar 13 02:21 | Mar 21 06:40 | Mar 28 10:48 | Apr 04 02:02 |
| Apr 11 18:31 | Apr 19 22:59 | Apr 26 19:31 | May 03 11:50 |
| May 11 11:00 | May 19 11:13 | May 26 03:14 t | Jun 01 23:24 |
| Jun 10 02:53 A | Jun 17 19:54 | Jun 24 10:40 | Jul 01 13:11 |
| Jul 09 17:17 | Jul 17 02:11 | Jul 23 18:37 | Jul 31 05:16 |
| Aug 08 05:50 | Aug 15 07:20 | Aug 22 04:02 | Aug 29 23:13 |
| Sep 06 16:52 | Sep 13 12:39 | Sep 20 15:55 | Sep 28 17:57 |
| Oct 06 03:05 | Oct 12 19:25 | Oct 20 06:57 | Oct 28 12:05 |
| Nov 04 13:15 | Nov 11 04:46 | Nov 19 00:58 p | Nov 27 04:28 |
| Dec 03 23:43 T | Dec 10 17:36 | Dec 18 20:36 | Dec 26 18:24 |
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)