2023 Sky Event Almanac
Greenwich Mean Time
The following table gives the date and time of the important astronomical events for the year . The times listed are for Greenwich Mean Time (= Coordinated Universal Time) . 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 | ||||||||
| Greenwich Mean Time | ||||||||
| January - June | July - December | |||||||
Date GMT Event
(h:m)
Jan 01 15:25 Moon at Ascending Node
02 20 Mercury at Perihelion
03 01:24 Pleiades 2.6°N of Moon
03 19:35 Mars 0.5°N of Moon: Occn.
04 03 Quadrantid Meteor Shower
04 16 Earth at Perihelion: 0.98329 AU
06 23:08 FULL MOON
07 13 Mercury at Inferior Conjunction
07 13:40 Pollux 1.9°N of Moon
08 09:19 Moon at Apogee: 406459 km
14 21:59 Spica 3.9°S of Moon
15 02:10 LAST QUARTER MOON
16 06:32 Moon at Descending Node
18 09:32 Antares 2.1°S of Moon
20 12 Jupiter at Perihelion: 4.95101 AU
21 20:53 NEW MOON
21 20:58 Moon at Perigee: 356570 km
22 22 Venus 0.3°S of Saturn
23 07:22 Saturn 3.8°N of Moon
23 08:20 Venus 3.5°N of Moon
26 02:00 Jupiter 1.8°N of Moon
28 15:19 FIRST QUARTER MOON
28 16:05 Moon at Ascending Node
30 06 Mercury at Greatest Elong: 25.0°W
30 07:21 Pleiades 2.4°N of Moon
31 04:24 Mars 0.1°N of Moon: Occn.
Feb 03 19:47 Pollux 1.9°N of Moon
04 08:55 Moon at Apogee: 406476 km
05 18:29 FULL MOON
06 17:44 Regulus 4.5°S of Moon
11 04:23 Spica 3.6°S of Moon
12 07:31 Moon at Descending Node
13 16:01 LAST QUARTER MOON
14 18:09 Antares 1.9°S of Moon
15 20 Mercury at Aphelion
16 16 Saturn in Conjunction with Sun
18 20:53 Mercury 3.6°N of Moon
19 09:06 Moon at Perigee: 358267 km
20 07:06 NEW MOON
22 07:57 Venus 2.1°N of Moon
22 21:58 Jupiter 1.2°N of Moon: Occn.
24 18:56 Moon at Ascending Node
26 14:42 Pleiades 2.1°N of Moon
27 08:06 FIRST QUARTER MOON
28 04:32 Mars 1.1°S of Moon: Occn.
Mar 02 04 Venus 0.5°N of Jupiter
03 02:10 Pollux 1.7°N of Moon
03 18:01 Moon at Apogee: 405890 km
06 00:08 Regulus 4.5°S of Moon
07 12:40 FULL MOON
10 10:06 Spica 3.4°S of Moon
11 08:53 Moon at Descending Node
14 00:21 Antares 1.6°S of Moon
15 02:08 LAST QUARTER MOON
15 23 Neptune in Conjunction with Sun
17 11 Mercury at Superior Conjunction
19 15:16 Moon at Perigee: 362698 km
19 15:20 Saturn 3.6°N of Moon
20 21:25 Vernal Equinox
21 17:23 NEW MOON
22 19:54 Jupiter 0.5°N of Moon: Occn.
24 02:08 Moon at Ascending Node
24 10:28 Venus 0.1°N of Moon: Occn.
25 23:42 Pleiades 1.9°N of Moon
28 13:16 Mars 2.3°S of Moon
29 02:32 FIRST QUARTER MOON
30 09:23 Pollux 1.6°N of Moon
31 11:18 Moon at Apogee: 404921 km
31 20 Mercury at Perihelion
Apr 06 04:35 FULL MOON
06 16:45 Spica 3.3°S of Moon
07 13:51 Moon at Descending Node
10 05:50 Antares 1.5°S of Moon
11 04:42 Venus 2.5°S of Pleiades
11 21 Jupiter in Conjunction with Sun
11 22 Mercury at Greatest Elong: 19.5°E
13 09:11 LAST QUARTER MOON
16 02:22 Moon at Perigee: 367967 km
16 03:47 Saturn 3.5°N of Moon
17 16 Venus at Perihelion
20 04:12 NEW MOON
20 04:17 Hybrid Solar Eclipse; mag=1.013
20 11:32 Moon at Ascending Node
22 09:14 Pleiades 1.9°N of Moon
23 01 Lyrid Meteor Shower
23 13:03 Venus 1.3°S of Moon
26 02:18 Mars 3.2°S of Moon
26 17:26 Pollux 1.5°N of Moon
27 21:20 FIRST QUARTER MOON
28 06:43 Moon at Apogee: 404300 km
May 01 23 Mercury at Inferior Conjunction
04 00:55 Spica 3.3°S of Moon
04 21:57 Moon at Descending Node
05 14 Eta-Aquarid Meteor Shower
05 17:23 Pen. Lunar Eclipse; mag=0.964
05 17:34 FULL MOON
07 12:35 Antares 1.5°S of Moon
08 11:27 Mars 4.9°S of Pollux
09 21 Uranus in Conjunction with Sun
11 04:57 Moon at Perigee: 369345 km
12 14:28 LAST QUARTER MOON
13 13:04 Saturn 3.3°N of Moon
17 13:15 Jupiter 0.8°S of Moon: Occn.
17 19:36 Moon at Ascending Node
18 01:34 Mercury 3.6°S of Moon
19 15:53 NEW MOON
23 12:08 Venus 2.2°S of Moon
24 01:37 Pollux 1.6°N of Moon
24 17:32 Mars 3.8°S of Moon
26 01:39 Moon at Apogee: 404510 km
27 15:22 FIRST QUARTER MOON
29 05 Mercury at Greatest Elong: 24.9°W
29 13:04 Venus 3.9°S of Pollux
30 21 Mars at Aphelion: 1.66594 AU
31 10:05 Spica 3.3°S of Moon
Jun 01 06:22 Moon at Descending Node
03 21:19 Antares 1.6°S of Moon
04 03:42 FULL MOON
04 11 Venus at Greatest Elong: 45.4°E
06 23:07 Moon at Perigee: 364860 km
09 20:19 Saturn 3.0°N of Moon
10 19:31 LAST QUARTER MOON
14 00:05 Moon at Ascending Node
14 06:33 Jupiter 1.5°S of Moon
16 00:47 Pleiades 1.8°N of Moon
16 20:16 Mercury 4.2°N of Aldebaran
16 20:39 Mercury 4.3°S of Moon
18 04:37 NEW MOON
20 09:10 Pollux 1.7°N of Moon
21 14:58 Summer Solstice
22 00:47 Venus 3.7°S of Moon
22 10:09 Mars 3.8°S of Moon
22 18:30 Moon at Apogee: 405385 km
23 07:08 Regulus 4.4°S of Moon
26 07:50 FIRST QUARTER MOON
27 19 Mercury at Perihelion
27 19:08 Spica 3.1°S of Moon
28 12:22 Moon at Descending Node
|
Date GMT Event
(h:m)
Jul 01 05 Mercury at Superior Conjunction
01 06 Venus 3.6°N of Mars
01 07:20 Antares 1.5°S of Moon
03 11:39 FULL MOON
04 22:28 Moon at Perigee: 360151 km
06 19 Earth at Aphelion: 1.01668 AU
07 03:05 Saturn 2.7°N of Moon
10 01:48 LAST QUARTER MOON
10 05:21 Mars 0.6°N of Regulus
11 01:23 Moon at Ascending Node
11 21:18 Jupiter 2.2°S of Moon
13 06:31 Pleiades 1.7°N of Moon
16 08:05 Venus 1.7°S of Regulus
17 18:32 NEW MOON
19 08:56 Mercury 3.5°S of Moon
20 06:56 Moon at Apogee: 406291 km
20 13:53 Regulus 4.2°S of Moon
21 04:00 Mars 3.3°S of Moon
25 03:01 Spica 2.8°S of Moon
25 15:05 Moon at Descending Node
25 22:07 FIRST QUARTER MOON
28 16 Delta-Aquarid Meteor Shower
28 17:11 Antares 1.3°S of Moon
28 18:21 Mercury 0.1°S of Regulus
Aug 01 18:31 FULL MOON
02 05:52 Moon at Perigee: 357311 km
03 10:21 Saturn 2.5°N of Moon
07 02:46 Moon at Ascending Node
08 00 Venus at Aphelion
08 09:41 Jupiter 2.9°S of Moon
08 10:28 LAST QUARTER MOON
09 12:16 Pleiades 1.5°N of Moon
10 02 Mercury at Greatest Elong: 27.4°E
10 18 Mercury at Aphelion
13 07 Perseid Meteor Shower
13 08 Mercury 4.7°S of Mars
13 11 Venus at Inferior Conjunction
13 21:36 Pollux 1.7°N of Moon
16 09:38 NEW MOON
16 11:55 Moon at Apogee: 406635 km
18 23:06 Mars 2.2°S of Moon
21 09:28 Spica 2.6°S of Moon
21 16:23 Moon at Descending Node
24 09:57 FIRST QUARTER MOON
25 01:29 Antares 1.1°S of Moon
27 08 Saturn at Opposition
30 15:51 Moon at Perigee: 357182 km
30 18:03 Saturn 2.5°N of Moon
31 01:35 FULL MOON
Sep 03 07:44 Moon at Ascending Node
04 19:44 Jupiter 3.3°S of Moon
05 19:25 Pleiades 1.2°N of Moon
06 11 Mercury at Inferior Conjunction
06 22:21 LAST QUARTER MOON
10 03:32 Pollux 1.5°N of Moon
12 15:42 Moon at Apogee: 406289 km
13 02:00 Regulus 4.1°S of Moon
15 01:40 NEW MOON
16 19:19 Mars 0.7°S of Moon: Occn.
17 15:12 Spica 2.4°S of Moon
17 19:18 Moon at Descending Node
19 10 Neptune at Opposition
21 07:50 Antares 0.9°S of Moon
22 13 Mercury at Greatest Elong: 17.9°W
22 19:32 FIRST QUARTER MOON
23 06:50 Autumnal Equinox
23 18 Mercury at Perihelion
27 01:25 Saturn 2.7°N of Moon
28 01:05 Moon at Perigee: 359911 km
29 09:57 FULL MOON
30 16:49 Moon at Ascending Node
Oct 02 03:16 Jupiter 3.4°S of Moon
03 04:25 Pleiades 1.1°N of Moon
06 13:48 LAST QUARTER MOON
07 10:23 Pollux 1.4°N of Moon
09 06:08 Venus 2.3°S of Regulus
10 03:41 Moon at Apogee: 405426 km
10 08:41 Regulus 4.2°S of Moon
14 17:55 NEW MOON
14 17:59 Annular Solar Eclipse; mag=0.952
15 01:11 Moon at Descending Node
18 13:17 Antares 0.9°S of Moon
20 05 Mercury at Superior Conjunction
22 00 Orionid Meteor Shower
22 03:29 FIRST QUARTER MOON
23 22 Venus at Greatest Elong: 46.4°W
24 07:52 Saturn 2.8°N of Moon
26 02:53 Moon at Perigee: 364873 km
28 03:14 Moon at Ascending Node
28 20:14 Partial Lunar Eclipse; mag=0.122
28 20:24 FULL MOON
29 08:10 Jupiter 3.1°S of Moon
30 14:30 Pleiades 1.1°N of Moon
Nov 03 04 Jupiter at Opposition
03 18:31 Pollux 1.4°N of Moon
05 08:37 LAST QUARTER MOON
06 00 S Taurid Meteor Shower
06 16:19 Regulus 4.2°S of Moon
06 21:49 Moon at Apogee: 404569 km
09 09:28 Venus 1.0°S of Moon: Occn.
11 05:09 Spica 2.4°S of Moon
11 08:49 Moon at Descending Node
13 00 N Taurid Meteor Shower
13 09:27 NEW MOON
13 18 Uranus at Opposition
14 19:42 Antares 0.9°S of Moon
16 21:17 Mercury 2.5°N of Antares
18 05 Mars in Conjunction with Sun
18 06 Leonid Meteor Shower
20 10:50 FIRST QUARTER MOON
20 14:02 Saturn 2.7°N of Moon
21 21:03 Moon at Perigee: 369824 km
24 11:02 Moon at Ascending Node
25 11:10 Jupiter 2.8°S of Moon
27 00:02 Pleiades 1.1°N of Moon
27 09:16 FULL MOON
28 09 Venus at Perihelion
29 10:27 Venus 3.9°N of Spica
Dec 01 03:23 Pollux 1.6°N of Moon
04 00:38 Regulus 4.0°S of Moon
04 14 Mercury at Greatest Elong: 21.3°E
04 18:42 Moon at Apogee: 404348 km
05 05:49 LAST QUARTER MOON
08 14:05 Spica 2.3°S of Moon
08 15:24 Moon at Descending Node
09 16:53 Venus 3.6°N of Moon
12 23:32 NEW MOON
14 05:18 Mercury 4.4°N of Moon
14 19 Geminid Meteor Shower
16 18:53 Moon at Perigee: 367900 km
17 21:58 Saturn 2.5°N of Moon
19 18:39 FIRST QUARTER MOON
20 17 Mercury at Perihelion
21 13:54 Moon at Ascending Node
22 03:28 Winter Solstice
22 14:20 Jupiter 2.6°S of Moon
22 19 Mercury at Inferior Conjunction
23 03 Ursid Meteor Shower
24 07:37 Pleiades 1.1°N of Moon
27 00:33 FULL MOON
28 11:51 Pollux 1.7°N of Moon
31 08:52 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
Greenwich Mean Time
The following table gives the date and time of the Moon's phases for the year . The times listed are for Greenwich Mean Time (= Coordinated Universal Time) . 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 | |||
| Greenwich Mean Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| - | - | Jan 06 23:08 | Jan 15 02:10 |
| Jan 21 20:53 | Jan 28 15:19 | Feb 05 18:29 | Feb 13 16:01 |
| Feb 20 07:06 | Feb 27 08:06 | Mar 07 12:40 | Mar 15 02:08 |
| Mar 21 17:23 | Mar 29 02:32 | Apr 06 04:35 | Apr 13 09:11 |
| Apr 20 04:12 H | Apr 27 21:20 | May 05 17:34 n | May 12 14:28 |
| May 19 15:53 | May 27 15:22 | Jun 04 03:42 | Jun 10 19:31 |
| Jun 18 04:37 | Jun 26 07:50 | Jul 03 11:39 | Jul 10 01:48 |
| Jul 17 18:32 | Jul 25 22:07 | Aug 01 18:31 | Aug 08 10:28 |
| Aug 16 09:38 | Aug 24 09:57 | Aug 31 01:35 | Sep 06 22:21 |
| Sep 15 01:40 | Sep 22 19:32 | Sep 29 09:57 | Oct 06 13:48 |
| Oct 14 17:55 A | Oct 22 03:29 | Oct 28 20:24 p | Nov 05 08:37 |
| Nov 13 09:27 | Nov 20 10:50 | Nov 27 09:16 | Dec 05 05:49 |
| Dec 12 23:32 | Dec 19 18:39 | Dec 27 00:33 | - |
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
Europe, Africa, and the Middle East
Below are links to sky event almanacs from 2021 to 2030 for six time zones
in Europe, Africa, and the Middle East.
Choose a time zone and click on a year to get a sky event almanac for that year.
| Sky Event Almanac - Europe, Africa, & Middle East | |||||||||||||||
| CVT | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| GMT | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| CET | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| EET | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| MSK | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
| GST | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | |||||
- CVT = Cape Verde Time (= UTC - 1 hour)
- GMT = Greenwich Mean Time (= UTC + 0 hour)
- CET = Central European Time (= UTC + 1 hour)
- EET = Eastern European Time (= UTC + 2 hours)
- MSK = Moscow Time (= UTC + 3 hours)
- GST = Gulf Standard Time (= UTC + 4 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)