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