2021 Sky Event Almanac
Hawaiian Standard Time
The following table gives the date and time of the important astronomical events for the year . The times listed are for Hawaiian Standard Time (Coordinated Universal Time − 10 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 | ||||||||
| Hawaiian Standard Time | ||||||||
| January - June | July - December | |||||||
Date HST Event
(h:m)
Jan 02 04 Earth at Perihelion: 0.98325 AU
02 11:58 Regulus 4.7°S of Moon
03 05 Quadrantid Meteor Shower
05 23:37 LAST QUARTER MOON
09 05:39 Moon at Perigee: 367390 km
10 10:14 Moon at Descending Node
11 10:12 Venus 1.5°N of Moon
12 19:00 NEW MOON
13 22:15 Mercury 2.3°N of Moon
20 11:02 FIRST QUARTER MOON
21 03:11 Moon at Apogee: 404361 km
23 16 Mercury at Greatest Elong: 18.6°E
23 16 Saturn in Conjunction with Sun
24 11:47 Moon at Ascending Node
27 05:46 Pollux 3.8°N of Moon
28 09:16 FULL MOON
28 15 Jupiter in Conjunction with Sun
28 16 Mercury at Perihelion
29 18:56 Regulus 4.6°S of Moon
Feb 03 09:33 Moon at Perigee: 370127 km
04 07:37 LAST QUARTER MOON
06 14:29 Moon at Descending Node
08 04 Mercury at Inferior Conjunction
10 01:16 Saturn 3.4°N of Moon
11 09:06 NEW MOON
18 00:22 Moon at Apogee: 404467 km
18 12:47 Mars 3.7°N of Moon
19 08:47 FIRST QUARTER MOON
19 19 Venus at Aphelion
20 15:44 Moon at Ascending Node
22 22 Mercury 4.0°N of Saturn
23 15:10 Pollux 3.7°N of Moon
26 04:04 Regulus 4.6°S of Moon
26 22:17 FULL MOON
Mar 01 19:19 Moon at Perigee: 365422 km
03 13:36 Mars 2.6°S of Pleiades
04 19 Mercury 0.3°N of Jupiter
05 14:56 Moon at Descending Node
05 15:30 LAST QUARTER MOON
06 01 Mercury at Greatest Elong: 27.3°W
09 13:02 Saturn 3.7°N of Moon
10 05:35 Jupiter 4.0°N of Moon
10 14 Neptune in Conjunction with Sun
10 15:02 Mercury 3.7°N of Moon
13 00:21 NEW MOON
13 16 Mercury at Aphelion
17 19:04 Moon at Apogee: 405253 km
19 07:48 Mars 1.9°N of Moon
19 17:31 Moon at Ascending Node
19 23:37 Vernal Equinox
21 04:40 FIRST QUARTER MOON
23 00:26 Pollux 3.5°N of Moon
25 14:17 Regulus 4.7°S of Moon
25 20 Venus at Superior Conjunction
28 08:48 FULL MOON
29 20:12 Moon at Perigee: 360311 km
Apr 01 10:49 Antares 4.9°S of Moon
01 16:41 Moon at Descending Node
04 00:02 LAST QUARTER MOON
05 22:34 Saturn 4.0°N of Moon
06 21:15 Jupiter 4.4°N of Moon
11 16:31 NEW MOON
14 07:47 Moon at Apogee: 406120 km
15 19:53 Moon at Ascending Node
17 02:09 Mars 0.1°N of Moon: Occn.
18 16 Mercury at Superior Conjunction
19 08:18 Pollux 3.2°N of Moon
19 20:59 FIRST QUARTER MOON
22 02 Lyrid Meteor Shower
26 15 Mercury at Perihelion
26 17:31 FULL MOON
27 05:24 Moon at Perigee: 357379 km
28 20:07 Antares 4.8°S of Moon
28 23:17 Moon at Descending Node
30 11 Uranus in Conjunction with Sun
May 03 07:02 Saturn 4.2°N of Moon
03 09:50 LAST QUARTER MOON
03 17:03 Mercury 2.1°S of Pleiades
04 11:00 Jupiter 4.6°N of Moon
04 15 Eta-Aquarid Meteor Shower
11 09:00 NEW MOON
11 11:54 Moon at Apogee: 406512 km
13 00:29 Moon at Ascending Node
13 07:59 Mercury 2.1°N of Moon
15 18:47 Mars 1.5°S of Moon
16 14:39 Pollux 3.1°N of Moon
16 20 Mercury at Greatest Elong: 22.0°E
19 09:13 FIRST QUARTER MOON
25 15:52 Moon at Perigee: 357310 km
26 01:14 FULL MOON
26 01:19 Total Lunar Eclipse; mag=1.009
26 06:55 Antares 4.8°S of Moon
26 09:38 Moon at Descending Node
28 17 Mercury 0.4°S of Venus
30 15:22 Saturn 4.2°N of Moon
31 22:57 Jupiter 4.6°N of Moon
Jun 01 21:24 LAST QUARTER MOON
07 16:27 Moon at Apogee: 406230 km
09 06:42 Moon at Ascending Node
10 00:42 Annular Solar Eclipse; mag=0.943
10 00:53 NEW MOON
10 15 Mercury at Inferior Conjunction
11 20:44 Venus 1.5°S of Moon
12 03 Venus at Perihelion
12 20:19 Pollux 3.1°N of Moon
13 09:52 Mars 2.8°S of Moon
17 17:54 FIRST QUARTER MOON
20 17:32 Summer Solstice
22 17:26 Antares 4.8°S of Moon
22 20:07 Moon at Descending Node
22 23:58 Moon at Perigee: 359960 km
24 08:40 FULL MOON
26 23:30 Saturn 4.0°N of Moon
28 08:38 Jupiter 4.5°N of Moon
|
Date HST Event
(h:m)
Jul 01 11:11 LAST QUARTER MOON
04 10 Mercury at Greatest Elong: 21.6°W
05 04:48 Moon at Apogee: 405342 km
05 13 Earth at Aphelion: 1.01673 AU
06 12:41 Moon at Ascending Node
07 18:38 Mercury 3.7°S of Moon
09 15:17 NEW MOON
11 23:10 Venus 3.3°S of Moon
12 00:10 Mars 3.8°S of Moon
12 14 Mars at Aphelion: 1.66596 AU
13 03 Venus 0.5°N of Mars
17 00:11 FIRST QUARTER MOON
20 02:06 Antares 4.7°S of Moon
20 03:22 Moon at Descending Node
21 00:30 Moon at Perigee: 364520 km
21 11:21 Venus 1.0°N of Regulus
23 15 Mercury at Perihelion
23 16:37 FULL MOON
24 06:42 Saturn 3.8°N of Moon
25 15:17 Jupiter 4.2°N of Moon
27 17 Delta-Aquarid Meteor Shower
29 04:09 Mars 0.6°N of Regulus
31 03:16 LAST QUARTER MOON
Aug 01 04 Mercury at Superior Conjunction
01 19 Saturn at Opposition
01 21:35 Moon at Apogee: 404412 km
02 16:51 Moon at Ascending Node
06 09:42 Pollux 3.1°N of Moon
08 03:50 NEW MOON
09 14:42 Mars 4.3°S of Moon
10 21:00 Venus 4.3°S of Moon
12 09 Perseid Meteor Shower
15 05:20 FIRST QUARTER MOON
16 06:04 Moon at Descending Node
16 08:34 Antares 4.5°S of Moon
16 23:23 Moon at Perigee: 369127 km
18 17 Mercury 0.1°S of Mars
19 13 Jupiter at Opposition
20 12:19 Saturn 3.7°N of Moon
21 18:52 Jupiter 4.0°N of Moon
22 02:02 FULL MOON
29 16:22 Moon at Apogee: 404100 km
29 19:13 Moon at Ascending Node
29 21:13 LAST QUARTER MOON
Sep 02 18:04 Pollux 3.0°N of Moon
05 04:32 Venus 1.4°N of Spica
05 14 Mercury at Aphelion
06 14:52 NEW MOON
09 16:09 Venus 4.1°S of Moon
11 00:05 Moon at Perigee: 368464 km
12 06:35 Moon at Descending Node
12 13:59 Antares 4.2°S of Moon
13 10:39 FIRST QUARTER MOON
13 18 Mercury at Greatest Elong: 26.8°E
13 22 Neptune at Opposition
16 16:37 Saturn 3.8°N of Moon
17 20:50 Jupiter 4.0°N of Moon
20 13:55 FULL MOON
20 16:00 Mercury 1.2°S of Spica
22 09:21 Autumnal Equinox
25 21:33 Moon at Ascending Node
26 11:44 Moon at Apogee: 404641 km
28 15:57 LAST QUARTER MOON
30 02:44 Pollux 2.8°N of Moon
Oct 02 12 Venus at Aphelion
06 01:05 NEW MOON
07 18 Mars in Conjunction with Sun
08 07:28 Moon at Perigee: 363388 km
09 06 Mercury at Inferior Conjunction
09 08:36 Venus 2.9°S of Moon
09 09:35 Moon at Descending Node
09 20:27 Antares 4.0°S of Moon
12 17:25 FIRST QUARTER MOON
13 21:12 Saturn 3.9°N of Moon
14 23:58 Jupiter 4.1°N of Moon
16 03:24 Venus 1.4°N of Antares
19 14 Mercury at Perihelion
20 04:57 FULL MOON
21 01 Orionid Meteor Shower
22 19:45 Pleiades 4.5°N of Moon
23 01:47 Moon at Ascending Node
24 05:30 Moon at Apogee: 405616 km
24 19 Mercury at Greatest Elong: 18.4°W
27 10:40 Pollux 2.6°N of Moon
28 10:05 LAST QUARTER MOON
29 12 Venus at Greatest Elong: 47.0°E
Nov 01 15:18 Mercury 3.7°N of Spica
03 08:40 Mercury 1.2°S of Moon: Occn.
04 11:15 NEW MOON
04 14 Uranus at Opposition
05 02 S Taurid Meteor Shower
05 12:23 Moon at Perigee: 358845 km
05 17:38 Moon at Descending Node
06 05:29 Antares 3.9°S of Moon
07 19:21 Venus 1.1°S of Moon: Occn.
10 04:27 Saturn 4.1°N of Moon
11 02:46 FIRST QUARTER MOON
11 07:13 Jupiter 4.4°N of Moon
12 01 N Taurid Meteor Shower
17 08 Leonid Meteor Shower
18 22:58 FULL MOON
18 23:03 Partial Lunar Eclipse; mag=0.974
19 02:21 Pleiades 4.5°N of Moon
19 07:59 Moon at Ascending Node
20 16:14 Moon at Apogee: 406276 km
23 17:22 Pollux 2.5°N of Moon
27 02:28 LAST QUARTER MOON
28 19 Mercury at Superior Conjunction
Dec 02 14:28 Mars 0.7°S of Moon: Occn.
03 04:58 Moon at Descending Node
03 21:33 Total Solar Eclipse; mag=1.037
03 21:43 NEW MOON
04 00:01 Moon at Perigee: 356794 km
06 14:48 Venus 1.9°N of Moon
07 15:52 Saturn 4.2°N of Moon
08 20:07 Jupiter 4.5°N of Moon
10 15:36 FIRST QUARTER MOON
13 21 Geminid Meteor Shower
16 08:30 Pleiades 4.5°N of Moon
16 14:12 Moon at Ascending Node
17 16:16 Moon at Apogee: 406322 km
18 18:36 FULL MOON
20 23:20 Pollux 2.6°N of Moon
21 05:59 Winter Solstice
22 05 Ursid Meteor Shower
26 16:24 LAST QUARTER MOON
26 23:15 Mars 4.4°N of Antares
28 19 Mercury 4.2°S of Venus
30 15:07 Moon at Descending Node
31 03:54 Antares 3.9°S of Moon
31 10:13 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
Hawaiian Standard Time
The following table gives the date and time of the Moon's phases for the year . The times listed are for Hawaiian Standard Time (Coordinated Universal Time − 10 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 | |||
| Hawaiian Standard Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| - | - | - | Jan 05 23:37 |
| Jan 12 19:00 | Jan 20 11:02 | Jan 28 09:16 | Feb 04 07:37 |
| Feb 11 09:06 | Feb 19 08:47 | Feb 26 22:17 | Mar 05 15:30 |
| Mar 13 00:21 | Mar 21 04:40 | Mar 28 08:48 | Apr 04 00:02 |
| Apr 11 16:31 | Apr 19 20:59 | Apr 26 17:31 | May 03 09:50 |
| May 11 09:00 | May 19 09:13 | May 26 01:14 t | Jun 01 21:24 |
| Jun 10 00:53 A | Jun 17 17:54 | Jun 24 08:40 | Jul 01 11:11 |
| Jul 09 15:17 | Jul 17 00:11 | Jul 23 16:37 | Jul 31 03:16 |
| Aug 08 03:50 | Aug 15 05:20 | Aug 22 02:02 | Aug 29 21:13 |
| Sep 06 14:52 | Sep 13 10:39 | Sep 20 13:55 | Sep 28 15:57 |
| Oct 06 01:05 | Oct 12 17:25 | Oct 20 04:57 | Oct 28 10:05 |
| Nov 04 11:15 | Nov 11 02:46 | Nov 18 22:58 p | Nov 27 02:28 |
| Dec 03 21:43 T | Dec 10 15:36 | Dec 18 18:36 | Dec 26 16:24 |
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)