2023 Sky Event Almanac
Atlantic Standard Time
The following table gives the date and time of the important astronomical events for the year . The times listed are for Atlantic Standard Time (Coordinated Universal Time − 4 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.
| 2023 Sky Event Almanac | ||||||||
| Atlantic Standard Time | ||||||||
| January - June | July - December | |||||||
Date AST Event
(h:m)
Jan 01 11:25 Moon at Ascending Node
02 16 Mercury at Perihelion
02 21:24 Pleiades 2.6°N of Moon
03 15:35 Mars 0.5°N of Moon: Occn.
03 23 Quadrantid Meteor Shower
04 12 Earth at Perihelion: 0.98329 AU
06 19:08 FULL MOON
07 09 Mercury at Inferior Conjunction
07 09:40 Pollux 1.9°N of Moon
08 05:19 Moon at Apogee: 406459 km
14 17:59 Spica 3.9°S of Moon
14 22:10 LAST QUARTER MOON
16 02:32 Moon at Descending Node
18 05:32 Antares 2.1°S of Moon
20 08 Jupiter at Perihelion: 4.95101 AU
21 16:53 NEW MOON
21 16:58 Moon at Perigee: 356570 km
22 18 Venus 0.3°S of Saturn
23 03:22 Saturn 3.8°N of Moon
23 04:20 Venus 3.5°N of Moon
25 22:00 Jupiter 1.8°N of Moon
28 11:19 FIRST QUARTER MOON
28 12:05 Moon at Ascending Node
30 02 Mercury at Greatest Elong: 25.0°W
30 03:21 Pleiades 2.4°N of Moon
31 00:24 Mars 0.1°N of Moon: Occn.
Feb 03 15:47 Pollux 1.9°N of Moon
04 04:55 Moon at Apogee: 406476 km
05 14:29 FULL MOON
06 13:44 Regulus 4.5°S of Moon
11 00:23 Spica 3.6°S of Moon
12 03:31 Moon at Descending Node
13 12:01 LAST QUARTER MOON
14 14:09 Antares 1.9°S of Moon
15 16 Mercury at Aphelion
16 12 Saturn in Conjunction with Sun
18 16:53 Mercury 3.6°N of Moon
19 05:06 Moon at Perigee: 358267 km
20 03:06 NEW MOON
22 03:57 Venus 2.1°N of Moon
22 17:58 Jupiter 1.2°N of Moon: Occn.
24 14:56 Moon at Ascending Node
26 10:42 Pleiades 2.1°N of Moon
27 04:06 FIRST QUARTER MOON
28 00:32 Mars 1.1°S of Moon: Occn.
Mar 02 00 Venus 0.5°N of Jupiter
02 22:10 Pollux 1.7°N of Moon
03 14:01 Moon at Apogee: 405890 km
05 20:08 Regulus 4.5°S of Moon
07 08:40 FULL MOON
10 06:06 Spica 3.4°S of Moon
11 04:53 Moon at Descending Node
13 20:21 Antares 1.6°S of Moon
14 22:08 LAST QUARTER MOON
15 19 Neptune in Conjunction with Sun
17 07 Mercury at Superior Conjunction
19 11:16 Moon at Perigee: 362698 km
19 11:20 Saturn 3.6°N of Moon
20 17:25 Vernal Equinox
21 13:23 NEW MOON
22 15:54 Jupiter 0.5°N of Moon: Occn.
23 22:08 Moon at Ascending Node
24 06:28 Venus 0.1°N of Moon: Occn.
25 19:42 Pleiades 1.9°N of Moon
28 09:16 Mars 2.3°S of Moon
28 22:32 FIRST QUARTER MOON
30 05:23 Pollux 1.6°N of Moon
31 07:18 Moon at Apogee: 404921 km
31 16 Mercury at Perihelion
Apr 06 00:35 FULL MOON
06 12:45 Spica 3.3°S of Moon
07 09:51 Moon at Descending Node
10 01:50 Antares 1.5°S of Moon
11 00:42 Venus 2.5°S of Pleiades
11 17 Jupiter in Conjunction with Sun
11 18 Mercury at Greatest Elong: 19.5°E
13 05:11 LAST QUARTER MOON
15 22:22 Moon at Perigee: 367967 km
15 23:47 Saturn 3.5°N of Moon
17 12 Venus at Perihelion
20 00:12 NEW MOON
20 00:17 Hybrid Solar Eclipse; mag=1.013
20 07:32 Moon at Ascending Node
22 05:14 Pleiades 1.9°N of Moon
22 21 Lyrid Meteor Shower
23 09:03 Venus 1.3°S of Moon
25 22:18 Mars 3.2°S of Moon
26 13:26 Pollux 1.5°N of Moon
27 17:20 FIRST QUARTER MOON
28 02:43 Moon at Apogee: 404300 km
May 01 19 Mercury at Inferior Conjunction
03 20:55 Spica 3.3°S of Moon
04 17:57 Moon at Descending Node
05 10 Eta-Aquarid Meteor Shower
05 13:23 Pen. Lunar Eclipse; mag=0.964
05 13:34 FULL MOON
07 08:35 Antares 1.5°S of Moon
08 07:27 Mars 4.9°S of Pollux
09 17 Uranus in Conjunction with Sun
11 00:57 Moon at Perigee: 369345 km
12 10:28 LAST QUARTER MOON
13 09:04 Saturn 3.3°N of Moon
17 09:15 Jupiter 0.8°S of Moon: Occn.
17 15:36 Moon at Ascending Node
17 21:34 Mercury 3.6°S of Moon
19 11:53 NEW MOON
23 08:08 Venus 2.2°S of Moon
23 21:37 Pollux 1.6°N of Moon
24 13:32 Mars 3.8°S of Moon
25 21:39 Moon at Apogee: 404510 km
27 11:22 FIRST QUARTER MOON
29 01 Mercury at Greatest Elong: 24.9°W
29 09:04 Venus 3.9°S of Pollux
30 17 Mars at Aphelion: 1.66594 AU
31 06:05 Spica 3.3°S of Moon
Jun 01 02:22 Moon at Descending Node
03 17:19 Antares 1.6°S of Moon
03 23:42 FULL MOON
04 07 Venus at Greatest Elong: 45.4°E
06 19:07 Moon at Perigee: 364860 km
09 16:19 Saturn 3.0°N of Moon
10 15:31 LAST QUARTER MOON
13 20:05 Moon at Ascending Node
14 02:33 Jupiter 1.5°S of Moon
15 20:47 Pleiades 1.8°N of Moon
16 16:16 Mercury 4.2°N of Aldebaran
16 16:39 Mercury 4.3°S of Moon
18 00:37 NEW MOON
20 05:10 Pollux 1.7°N of Moon
21 10:58 Summer Solstice
21 20:47 Venus 3.7°S of Moon
22 06:09 Mars 3.8°S of Moon
22 14:30 Moon at Apogee: 405385 km
23 03:08 Regulus 4.4°S of Moon
26 03:50 FIRST QUARTER MOON
27 15 Mercury at Perihelion
27 15:08 Spica 3.1°S of Moon
28 08:22 Moon at Descending Node
|
Date AST Event
(h:m)
Jul 01 01 Mercury at Superior Conjunction
01 02 Venus 3.6°N of Mars
01 03:20 Antares 1.5°S of Moon
03 07:39 FULL MOON
04 18:28 Moon at Perigee: 360151 km
06 15 Earth at Aphelion: 1.01668 AU
06 23:05 Saturn 2.7°N of Moon
09 21:48 LAST QUARTER MOON
10 01:21 Mars 0.6°N of Regulus
10 21:23 Moon at Ascending Node
11 17:18 Jupiter 2.2°S of Moon
13 02:31 Pleiades 1.7°N of Moon
16 04:05 Venus 1.7°S of Regulus
17 14:32 NEW MOON
19 04:56 Mercury 3.5°S of Moon
20 02:56 Moon at Apogee: 406291 km
20 09:53 Regulus 4.2°S of Moon
21 00:00 Mars 3.3°S of Moon
24 23:01 Spica 2.8°S of Moon
25 11:05 Moon at Descending Node
25 18:07 FIRST QUARTER MOON
28 12 Delta-Aquarid Meteor Shower
28 13:11 Antares 1.3°S of Moon
28 14:21 Mercury 0.1°S of Regulus
Aug 01 14:31 FULL MOON
02 01:52 Moon at Perigee: 357311 km
03 06:21 Saturn 2.5°N of Moon
06 22:46 Moon at Ascending Node
07 20 Venus at Aphelion
08 05:41 Jupiter 2.9°S of Moon
08 06:28 LAST QUARTER MOON
09 08:16 Pleiades 1.5°N of Moon
09 22 Mercury at Greatest Elong: 27.4°E
10 14 Mercury at Aphelion
13 03 Perseid Meteor Shower
13 04 Mercury 4.7°S of Mars
13 07 Venus at Inferior Conjunction
13 17:36 Pollux 1.7°N of Moon
16 05:38 NEW MOON
16 07:55 Moon at Apogee: 406635 km
18 19:06 Mars 2.2°S of Moon
21 05:28 Spica 2.6°S of Moon
21 12:23 Moon at Descending Node
24 05:57 FIRST QUARTER MOON
24 21:29 Antares 1.1°S of Moon
27 04 Saturn at Opposition
30 11:51 Moon at Perigee: 357182 km
30 14:03 Saturn 2.5°N of Moon
30 21:35 FULL MOON
Sep 03 03:44 Moon at Ascending Node
04 15:44 Jupiter 3.3°S of Moon
05 15:25 Pleiades 1.2°N of Moon
06 07 Mercury at Inferior Conjunction
06 18:21 LAST QUARTER MOON
09 23:32 Pollux 1.5°N of Moon
12 11:42 Moon at Apogee: 406289 km
12 22:00 Regulus 4.1°S of Moon
14 21:40 NEW MOON
16 15:19 Mars 0.7°S of Moon: Occn.
17 11:12 Spica 2.4°S of Moon
17 15:18 Moon at Descending Node
19 06 Neptune at Opposition
21 03:50 Antares 0.9°S of Moon
22 09 Mercury at Greatest Elong: 17.9°W
22 15:32 FIRST QUARTER MOON
23 02:50 Autumnal Equinox
23 14 Mercury at Perihelion
26 21:25 Saturn 2.7°N of Moon
27 21:05 Moon at Perigee: 359911 km
29 05:57 FULL MOON
30 12:49 Moon at Ascending Node
Oct 01 23:16 Jupiter 3.4°S of Moon
03 00:25 Pleiades 1.1°N of Moon
06 09:48 LAST QUARTER MOON
07 06:23 Pollux 1.4°N of Moon
09 02:08 Venus 2.3°S of Regulus
09 23:41 Moon at Apogee: 405426 km
10 04:41 Regulus 4.2°S of Moon
14 13:55 NEW MOON
14 13:59 Annular Solar Eclipse; mag=0.952
14 21:11 Moon at Descending Node
18 09:17 Antares 0.9°S of Moon
20 01 Mercury at Superior Conjunction
21 20 Orionid Meteor Shower
21 23:29 FIRST QUARTER MOON
23 18 Venus at Greatest Elong: 46.4°W
24 03:52 Saturn 2.8°N of Moon
25 22:53 Moon at Perigee: 364873 km
27 23:14 Moon at Ascending Node
28 16:14 Partial Lunar Eclipse; mag=0.122
28 16:24 FULL MOON
29 04:10 Jupiter 3.1°S of Moon
30 10:30 Pleiades 1.1°N of Moon
Nov 03 00 Jupiter at Opposition
03 14:31 Pollux 1.4°N of Moon
05 04:37 LAST QUARTER MOON
05 20 S Taurid Meteor Shower
06 12:19 Regulus 4.2°S of Moon
06 17:49 Moon at Apogee: 404569 km
09 05:28 Venus 1.0°S of Moon: Occn.
11 01:09 Spica 2.4°S of Moon
11 04:49 Moon at Descending Node
12 20 N Taurid Meteor Shower
13 05:27 NEW MOON
13 14 Uranus at Opposition
14 15:42 Antares 0.9°S of Moon
16 17:17 Mercury 2.5°N of Antares
18 01 Mars in Conjunction with Sun
18 02 Leonid Meteor Shower
20 06:50 FIRST QUARTER MOON
20 10:02 Saturn 2.7°N of Moon
21 17:03 Moon at Perigee: 369824 km
24 07:02 Moon at Ascending Node
25 07:10 Jupiter 2.8°S of Moon
26 20:02 Pleiades 1.1°N of Moon
27 05:16 FULL MOON
28 05 Venus at Perihelion
29 06:27 Venus 3.9°N of Spica
30 23:23 Pollux 1.6°N of Moon
Dec 03 20:38 Regulus 4.0°S of Moon
04 10 Mercury at Greatest Elong: 21.3°E
04 14:42 Moon at Apogee: 404348 km
05 01:49 LAST QUARTER MOON
08 10:05 Spica 2.3°S of Moon
08 11:24 Moon at Descending Node
09 12:53 Venus 3.6°N of Moon
12 19:32 NEW MOON
14 01:18 Mercury 4.4°N of Moon
14 15 Geminid Meteor Shower
16 14:53 Moon at Perigee: 367900 km
17 17:58 Saturn 2.5°N of Moon
19 14:39 FIRST QUARTER MOON
20 13 Mercury at Perihelion
21 09:54 Moon at Ascending Node
21 23:28 Winter Solstice
22 10:20 Jupiter 2.6°S of Moon
22 15 Mercury at Inferior Conjunction
22 23 Ursid Meteor Shower
24 03:37 Pleiades 1.1°N of Moon
26 20:33 FULL MOON
28 07:51 Pollux 1.7°N of Moon
31 04:52 Regulus 3.8°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
2023 Phases of the Moon
Atlantic Standard Time
The following table gives the date and time of the Moon's phases for the year . The times listed are for Atlantic Standard Time (Coordinated Universal Time − 4 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.
| 2023 Phases of the Moon | |||
| Atlantic Standard Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| - | - | Jan 06 19:08 | Jan 14 22:10 |
| Jan 21 16:53 | Jan 28 11:19 | Feb 05 14:29 | Feb 13 12:01 |
| Feb 20 03:06 | Feb 27 04:06 | Mar 07 08:40 | Mar 14 22:08 |
| Mar 21 13:23 | Mar 28 22:32 | Apr 06 00:35 | Apr 13 05:11 |
| Apr 20 00:12 H | Apr 27 17:20 | May 05 13:34 n | May 12 10:28 |
| May 19 11:53 | May 27 11:22 | Jun 03 23:42 | Jun 10 15:31 |
| Jun 18 00:37 | Jun 26 03:50 | Jul 03 07:39 | Jul 09 21:48 |
| Jul 17 14:32 | Jul 25 18:07 | Aug 01 14:31 | Aug 08 06:28 |
| Aug 16 05:38 | Aug 24 05:57 | Aug 30 21:35 | Sep 06 18:21 |
| Sep 14 21:40 | Sep 22 15:32 | Sep 29 05:57 | Oct 06 09:48 |
| Oct 14 13:55 A | Oct 21 23:29 | Oct 28 16:24 p | Nov 05 04:37 |
| Nov 13 05:27 | Nov 20 06:50 | Nov 27 05:16 | Dec 05 01:49 |
| Dec 12 19:32 | Dec 19 14:39 | Dec 26 20:33 | - |
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)