2021 Sky Event Almanac
Japan Standard Time
The following table gives the date and time of the important astronomical events for the year . The times listed are for Japan Standard Time (Coordinated Universal Time + 9 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 | ||||||||
| Japan Standard Time | ||||||||
| January - June | July - December | |||||||
Date JST Event
(h:m)
Jan 02 23 Earth at Perihelion: 0.98325 AU
03 06:58 Regulus 4.7°S of Moon
04 00 Quadrantid Meteor Shower
06 18:37 LAST QUARTER MOON
10 00:39 Moon at Perigee: 367390 km
11 05:14 Moon at Descending Node
12 05:12 Venus 1.5°N of Moon
13 14:00 NEW MOON
14 17:15 Mercury 2.3°N of Moon
21 06:02 FIRST QUARTER MOON
21 22:11 Moon at Apogee: 404361 km
24 11 Mercury at Greatest Elong: 18.6°E
24 11 Saturn in Conjunction with Sun
25 06:47 Moon at Ascending Node
28 00:46 Pollux 3.8°N of Moon
29 04:16 FULL MOON
29 10 Jupiter in Conjunction with Sun
29 11 Mercury at Perihelion
30 13:56 Regulus 4.6°S of Moon
Feb 04 04:33 Moon at Perigee: 370127 km
05 02:37 LAST QUARTER MOON
07 09:29 Moon at Descending Node
08 23 Mercury at Inferior Conjunction
10 20:16 Saturn 3.4°N of Moon
12 04:06 NEW MOON
18 19:22 Moon at Apogee: 404467 km
19 07:47 Mars 3.7°N of Moon
20 03:47 FIRST QUARTER MOON
20 14 Venus at Aphelion
21 10:44 Moon at Ascending Node
23 17 Mercury 4.0°N of Saturn
24 10:10 Pollux 3.7°N of Moon
26 23:04 Regulus 4.6°S of Moon
27 17:17 FULL MOON
Mar 02 14:19 Moon at Perigee: 365422 km
04 08:36 Mars 2.6°S of Pleiades
05 14 Mercury 0.3°N of Jupiter
06 09:56 Moon at Descending Node
06 10:30 LAST QUARTER MOON
06 20 Mercury at Greatest Elong: 27.3°W
10 08:02 Saturn 3.7°N of Moon
11 00:35 Jupiter 4.0°N of Moon
11 09 Neptune in Conjunction with Sun
11 10:02 Mercury 3.7°N of Moon
13 19:21 NEW MOON
14 11 Mercury at Aphelion
18 14:04 Moon at Apogee: 405253 km
20 02:48 Mars 1.9°N of Moon
20 12:31 Moon at Ascending Node
20 18:37 Vernal Equinox
21 23:40 FIRST QUARTER MOON
23 19:26 Pollux 3.5°N of Moon
26 09:17 Regulus 4.7°S of Moon
26 15 Venus at Superior Conjunction
29 03:48 FULL MOON
30 15:12 Moon at Perigee: 360311 km
Apr 02 05:49 Antares 4.9°S of Moon
02 11:41 Moon at Descending Node
04 19:02 LAST QUARTER MOON
06 17:34 Saturn 4.0°N of Moon
07 16:15 Jupiter 4.4°N of Moon
12 11:31 NEW MOON
15 02:47 Moon at Apogee: 406120 km
16 14:53 Moon at Ascending Node
17 21:09 Mars 0.1°N of Moon: Occn.
19 11 Mercury at Superior Conjunction
20 03:18 Pollux 3.2°N of Moon
20 15:59 FIRST QUARTER MOON
22 21 Lyrid Meteor Shower
27 10 Mercury at Perihelion
27 12:31 FULL MOON
28 00:24 Moon at Perigee: 357379 km
29 15:07 Antares 4.8°S of Moon
29 18:17 Moon at Descending Node
May 01 06 Uranus in Conjunction with Sun
04 02:02 Saturn 4.2°N of Moon
04 04:50 LAST QUARTER MOON
04 12:03 Mercury 2.1°S of Pleiades
05 06:00 Jupiter 4.6°N of Moon
05 10 Eta-Aquarid Meteor Shower
12 04:00 NEW MOON
12 06:54 Moon at Apogee: 406512 km
13 19:29 Moon at Ascending Node
14 02:59 Mercury 2.1°N of Moon
16 13:47 Mars 1.5°S of Moon
17 09:39 Pollux 3.1°N of Moon
17 15 Mercury at Greatest Elong: 22.0°E
20 04:13 FIRST QUARTER MOON
26 10:52 Moon at Perigee: 357310 km
26 20:14 FULL MOON
26 20:19 Total Lunar Eclipse; mag=1.009
27 01:55 Antares 4.8°S of Moon
27 04:38 Moon at Descending Node
29 12 Mercury 0.4°S of Venus
31 10:22 Saturn 4.2°N of Moon
Jun 01 17:57 Jupiter 4.6°N of Moon
02 16:24 LAST QUARTER MOON
08 11:27 Moon at Apogee: 406230 km
10 01:42 Moon at Ascending Node
10 19:42 Annular Solar Eclipse; mag=0.943
10 19:53 NEW MOON
11 10 Mercury at Inferior Conjunction
12 15:44 Venus 1.5°S of Moon
12 22 Venus at Perihelion
13 15:19 Pollux 3.1°N of Moon
14 04:52 Mars 2.8°S of Moon
18 12:54 FIRST QUARTER MOON
21 12:32 Summer Solstice
23 12:26 Antares 4.8°S of Moon
23 15:07 Moon at Descending Node
23 18:58 Moon at Perigee: 359960 km
25 03:40 FULL MOON
27 18:30 Saturn 4.0°N of Moon
29 03:38 Jupiter 4.5°N of Moon
|
Date JST Event
(h:m)
Jul 02 06:11 LAST QUARTER MOON
05 05 Mercury at Greatest Elong: 21.6°W
05 23:48 Moon at Apogee: 405342 km
06 08 Earth at Aphelion: 1.01673 AU
07 07:41 Moon at Ascending Node
08 13:38 Mercury 3.7°S of Moon
10 10:17 NEW MOON
12 18:10 Venus 3.3°S of Moon
12 19:10 Mars 3.8°S of Moon
13 09 Mars at Aphelion: 1.66596 AU
13 22 Venus 0.5°N of Mars
17 19:11 FIRST QUARTER MOON
20 21:06 Antares 4.7°S of Moon
20 22:22 Moon at Descending Node
21 19:30 Moon at Perigee: 364520 km
22 06:21 Venus 1.0°N of Regulus
24 10 Mercury at Perihelion
24 11:37 FULL MOON
25 01:42 Saturn 3.8°N of Moon
26 10:17 Jupiter 4.2°N of Moon
28 12 Delta-Aquarid Meteor Shower
29 23:09 Mars 0.6°N of Regulus
31 22:16 LAST QUARTER MOON
Aug 01 23 Mercury at Superior Conjunction
02 14 Saturn at Opposition
02 16:35 Moon at Apogee: 404412 km
03 11:51 Moon at Ascending Node
07 04:42 Pollux 3.1°N of Moon
08 22:50 NEW MOON
10 09:42 Mars 4.3°S of Moon
11 16:00 Venus 4.3°S of Moon
13 04 Perseid Meteor Shower
16 00:20 FIRST QUARTER MOON
17 01:04 Moon at Descending Node
17 03:34 Antares 4.5°S of Moon
17 18:23 Moon at Perigee: 369127 km
19 12 Mercury 0.1°S of Mars
20 08 Jupiter at Opposition
21 07:19 Saturn 3.7°N of Moon
22 13:52 Jupiter 4.0°N of Moon
22 21:02 FULL MOON
30 11:22 Moon at Apogee: 404100 km
30 14:13 Moon at Ascending Node
30 16:13 LAST QUARTER MOON
Sep 03 13:04 Pollux 3.0°N of Moon
05 23:32 Venus 1.4°N of Spica
06 09 Mercury at Aphelion
07 09:52 NEW MOON
10 11:09 Venus 4.1°S of Moon
11 19:05 Moon at Perigee: 368464 km
13 01:35 Moon at Descending Node
13 08:59 Antares 4.2°S of Moon
14 05:39 FIRST QUARTER MOON
14 13 Mercury at Greatest Elong: 26.8°E
14 17 Neptune at Opposition
17 11:37 Saturn 3.8°N of Moon
18 15:50 Jupiter 4.0°N of Moon
21 08:55 FULL MOON
21 11:00 Mercury 1.2°S of Spica
23 04:21 Autumnal Equinox
26 16:33 Moon at Ascending Node
27 06:44 Moon at Apogee: 404641 km
29 10:57 LAST QUARTER MOON
30 21:44 Pollux 2.8°N of Moon
Oct 03 07 Venus at Aphelion
06 20:05 NEW MOON
08 13 Mars in Conjunction with Sun
09 02:28 Moon at Perigee: 363388 km
10 01 Mercury at Inferior Conjunction
10 03:36 Venus 2.9°S of Moon
10 04:35 Moon at Descending Node
10 15:27 Antares 4.0°S of Moon
13 12:25 FIRST QUARTER MOON
14 16:12 Saturn 3.9°N of Moon
15 18:58 Jupiter 4.1°N of Moon
16 22:24 Venus 1.4°N of Antares
20 09 Mercury at Perihelion
20 23:57 FULL MOON
21 20 Orionid Meteor Shower
23 14:45 Pleiades 4.5°N of Moon
23 20:47 Moon at Ascending Node
25 00:30 Moon at Apogee: 405616 km
25 14 Mercury at Greatest Elong: 18.4°W
28 05:40 Pollux 2.6°N of Moon
29 05:05 LAST QUARTER MOON
30 07 Venus at Greatest Elong: 47.0°E
Nov 02 10:18 Mercury 3.7°N of Spica
04 03:40 Mercury 1.2°S of Moon: Occn.
05 06:15 NEW MOON
05 09 Uranus at Opposition
05 21 S Taurid Meteor Shower
06 07:23 Moon at Perigee: 358845 km
06 12:38 Moon at Descending Node
07 00:29 Antares 3.9°S of Moon
08 14:21 Venus 1.1°S of Moon: Occn.
10 23:27 Saturn 4.1°N of Moon
11 21:46 FIRST QUARTER MOON
12 02:13 Jupiter 4.4°N of Moon
12 20 N Taurid Meteor Shower
18 03 Leonid Meteor Shower
19 17:58 FULL MOON
19 18:03 Partial Lunar Eclipse; mag=0.974
19 21:21 Pleiades 4.5°N of Moon
20 02:59 Moon at Ascending Node
21 11:14 Moon at Apogee: 406276 km
24 12:22 Pollux 2.5°N of Moon
27 21:28 LAST QUARTER MOON
29 14 Mercury at Superior Conjunction
Dec 03 09:28 Mars 0.7°S of Moon: Occn.
03 23:58 Moon at Descending Node
04 16:33 Total Solar Eclipse; mag=1.037
04 16:43 NEW MOON
04 19:01 Moon at Perigee: 356794 km
07 09:48 Venus 1.9°N of Moon
08 10:52 Saturn 4.2°N of Moon
09 15:07 Jupiter 4.5°N of Moon
11 10:36 FIRST QUARTER MOON
14 16 Geminid Meteor Shower
17 03:30 Pleiades 4.5°N of Moon
17 09:12 Moon at Ascending Node
18 11:16 Moon at Apogee: 406322 km
19 13:36 FULL MOON
21 18:20 Pollux 2.6°N of Moon
22 00:59 Winter Solstice
23 00 Ursid Meteor Shower
27 11:24 LAST QUARTER MOON
27 18:15 Mars 4.4°N of Antares
29 14 Mercury 4.2°S of Venus
31 10:07 Moon at Descending Node
31 22:54 Antares 3.9°S of Moon
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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
Japan Standard Time
The following table gives the date and time of the Moon's phases for the year . The times listed are for Japan Standard Time (Coordinated Universal Time + 9 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 | |||
| Japan Standard Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| - | - | - | Jan 06 18:37 |
| Jan 13 14:00 | Jan 21 06:02 | Jan 29 04:16 | Feb 05 02:37 |
| Feb 12 04:06 | Feb 20 03:47 | Feb 27 17:17 | Mar 06 10:30 |
| Mar 13 19:21 | Mar 21 23:40 | Mar 29 03:48 | Apr 04 19:02 |
| Apr 12 11:31 | Apr 20 15:59 | Apr 27 12:31 | May 04 04:50 |
| May 12 04:00 | May 20 04:13 | May 26 20:14 t | Jun 02 16:24 |
| Jun 10 19:53 A | Jun 18 12:54 | Jun 25 03:40 | Jul 02 06:11 |
| Jul 10 10:17 | Jul 17 19:11 | Jul 24 11:37 | Jul 31 22:16 |
| Aug 08 22:50 | Aug 16 00:20 | Aug 22 21:02 | Aug 30 16:13 |
| Sep 07 09:52 | Sep 14 05:39 | Sep 21 08:55 | Sep 29 10:57 |
| Oct 06 20:05 | Oct 13 12:25 | Oct 20 23:57 | Oct 29 05:05 |
| Nov 05 06:15 | Nov 11 21:46 | Nov 19 17:58 p | Nov 27 21:28 |
| Dec 04 16:43 T | Dec 11 10:36 | Dec 19 13:36 | Dec 27 11:24 |
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
Asia & Oceania
Below are links to sky event almanacs from 2021 to 2030 for ten time zones in Asia & Oceania.
Choose a time zone and click on a year to get a sky event almanac for that year.
| Sky Event Almanacs - Asia & Oceania | |||||||||||||||
| PKT | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| IST | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| BST | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| ICT | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| AWST | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| JST | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| ACT | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| AEST | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| NCT | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| NZST | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
- PKT = Pakistan Standard Time (= UTC + 5 hours)
- IST = Indian Standard Time (= UTC + 5.5 hours)
- BST = Bangladesh Standard Time (= UTC + 6 hours)
- ICT = Indochina Time (= UTC + 7 hours)
- AWST = Australian Western Standard Time (= UTC + 8 hours)
- JST = Japan Standard Time (= UTC + 9 hours)
- ACT = Australian Central Time (= UTC + 9.5 hours)
- AEST = Australian Eastern Standard Time (= UTC + 10 hours)
- NCT = New Caledonia Time (= UTC + 11 hours)
- NZST = New Zealand Standard Time (= UTC + 12 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)
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Weather Forecast for Astronomy (Clear Outside)
GOES-East Images (NOAA-GOES)
Astronomy Tools (Astronomy Tools)