2023 Sky Event Almanac
Mountain Standard Time
The following table gives the date and time of the important astronomical events for the year . The times listed are for Mountain Standard Time (Coordinated Universal Time − 7 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 | ||||||||
| Mountain Standard Time | ||||||||
| January - June | July - December | |||||||
Date MST Event
(h:m)
Jan 01 08:25 Moon at Ascending Node
02 13 Mercury at Perihelion
02 18:24 Pleiades 2.6°N of Moon
03 12:35 Mars 0.5°N of Moon: Occn.
03 20 Quadrantid Meteor Shower
04 09 Earth at Perihelion: 0.98329 AU
06 16:08 FULL MOON
07 06 Mercury at Inferior Conjunction
07 06:40 Pollux 1.9°N of Moon
08 02:19 Moon at Apogee: 406459 km
14 14:59 Spica 3.9°S of Moon
14 19:10 LAST QUARTER MOON
15 23:32 Moon at Descending Node
18 02:32 Antares 2.1°S of Moon
20 05 Jupiter at Perihelion: 4.95101 AU
21 13:53 NEW MOON
21 13:58 Moon at Perigee: 356570 km
22 15 Venus 0.3°S of Saturn
23 00:22 Saturn 3.8°N of Moon
23 01:20 Venus 3.5°N of Moon
25 19:00 Jupiter 1.8°N of Moon
28 08:19 FIRST QUARTER MOON
28 09:05 Moon at Ascending Node
29 23 Mercury at Greatest Elong: 25.0°W
30 00:21 Pleiades 2.4°N of Moon
30 21:24 Mars 0.1°N of Moon: Occn.
Feb 03 12:47 Pollux 1.9°N of Moon
04 01:55 Moon at Apogee: 406476 km
05 11:29 FULL MOON
06 10:44 Regulus 4.5°S of Moon
10 21:23 Spica 3.6°S of Moon
12 00:31 Moon at Descending Node
13 09:01 LAST QUARTER MOON
14 11:09 Antares 1.9°S of Moon
15 13 Mercury at Aphelion
16 09 Saturn in Conjunction with Sun
18 13:53 Mercury 3.6°N of Moon
19 02:06 Moon at Perigee: 358267 km
20 00:06 NEW MOON
22 00:57 Venus 2.1°N of Moon
22 14:58 Jupiter 1.2°N of Moon: Occn.
24 11:56 Moon at Ascending Node
26 07:42 Pleiades 2.1°N of Moon
27 01:06 FIRST QUARTER MOON
27 21:32 Mars 1.1°S of Moon: Occn.
Mar 01 21 Venus 0.5°N of Jupiter
02 19:10 Pollux 1.7°N of Moon
03 11:01 Moon at Apogee: 405890 km
05 17:08 Regulus 4.5°S of Moon
07 05:40 FULL MOON
10 03:06 Spica 3.4°S of Moon
11 01:53 Moon at Descending Node
13 17:21 Antares 1.6°S of Moon
14 19:08 LAST QUARTER MOON
15 16 Neptune in Conjunction with Sun
17 04 Mercury at Superior Conjunction
19 08:16 Moon at Perigee: 362698 km
19 08:20 Saturn 3.6°N of Moon
20 14:25 Vernal Equinox
21 10:23 NEW MOON
22 12:54 Jupiter 0.5°N of Moon: Occn.
23 19:08 Moon at Ascending Node
24 03:28 Venus 0.1°N of Moon: Occn.
25 16:42 Pleiades 1.9°N of Moon
28 06:16 Mars 2.3°S of Moon
28 19:32 FIRST QUARTER MOON
30 02:23 Pollux 1.6°N of Moon
31 04:18 Moon at Apogee: 404921 km
31 13 Mercury at Perihelion
Apr 05 21:35 FULL MOON
06 09:45 Spica 3.3°S of Moon
07 06:51 Moon at Descending Node
09 22:50 Antares 1.5°S of Moon
10 21:42 Venus 2.5°S of Pleiades
11 14 Jupiter in Conjunction with Sun
11 15 Mercury at Greatest Elong: 19.5°E
13 02:11 LAST QUARTER MOON
15 19:22 Moon at Perigee: 367967 km
15 20:47 Saturn 3.5°N of Moon
17 09 Venus at Perihelion
19 21:12 NEW MOON
19 21:17 Hybrid Solar Eclipse; mag=1.013
20 04:32 Moon at Ascending Node
22 02:14 Pleiades 1.9°N of Moon
22 18 Lyrid Meteor Shower
23 06:03 Venus 1.3°S of Moon
25 19:18 Mars 3.2°S of Moon
26 10:26 Pollux 1.5°N of Moon
27 14:20 FIRST QUARTER MOON
27 23:43 Moon at Apogee: 404300 km
May 01 16 Mercury at Inferior Conjunction
03 17:55 Spica 3.3°S of Moon
04 14:57 Moon at Descending Node
05 07 Eta-Aquarid Meteor Shower
05 10:23 Pen. Lunar Eclipse; mag=0.964
05 10:34 FULL MOON
07 05:35 Antares 1.5°S of Moon
08 04:27 Mars 4.9°S of Pollux
09 14 Uranus in Conjunction with Sun
10 21:57 Moon at Perigee: 369345 km
12 07:28 LAST QUARTER MOON
13 06:04 Saturn 3.3°N of Moon
17 06:15 Jupiter 0.8°S of Moon: Occn.
17 12:36 Moon at Ascending Node
17 18:34 Mercury 3.6°S of Moon
19 08:53 NEW MOON
23 05:08 Venus 2.2°S of Moon
23 18:37 Pollux 1.6°N of Moon
24 10:32 Mars 3.8°S of Moon
25 18:39 Moon at Apogee: 404510 km
27 08:22 FIRST QUARTER MOON
28 22 Mercury at Greatest Elong: 24.9°W
29 06:04 Venus 3.9°S of Pollux
30 14 Mars at Aphelion: 1.66594 AU
31 03:05 Spica 3.3°S of Moon
31 23:22 Moon at Descending Node
Jun 03 14:19 Antares 1.6°S of Moon
03 20:42 FULL MOON
04 04 Venus at Greatest Elong: 45.4°E
06 16:07 Moon at Perigee: 364860 km
09 13:19 Saturn 3.0°N of Moon
10 12:31 LAST QUARTER MOON
13 17:05 Moon at Ascending Node
13 23:33 Jupiter 1.5°S of Moon
15 17:47 Pleiades 1.8°N of Moon
16 13:16 Mercury 4.2°N of Aldebaran
16 13:39 Mercury 4.3°S of Moon
17 21:37 NEW MOON
20 02:10 Pollux 1.7°N of Moon
21 07:58 Summer Solstice
21 17:47 Venus 3.7°S of Moon
22 03:09 Mars 3.8°S of Moon
22 11:30 Moon at Apogee: 405385 km
23 00:08 Regulus 4.4°S of Moon
26 00:50 FIRST QUARTER MOON
27 12 Mercury at Perihelion
27 12:08 Spica 3.1°S of Moon
28 05:22 Moon at Descending Node
30 22 Mercury at Superior Conjunction
30 23 Venus 3.6°N of Mars
|
Date MST Event
(h:m)
Jul 01 00:20 Antares 1.5°S of Moon
03 04:39 FULL MOON
04 15:28 Moon at Perigee: 360151 km
06 12 Earth at Aphelion: 1.01668 AU
06 20:05 Saturn 2.7°N of Moon
09 18:48 LAST QUARTER MOON
09 22:21 Mars 0.6°N of Regulus
10 18:23 Moon at Ascending Node
11 14:18 Jupiter 2.2°S of Moon
12 23:31 Pleiades 1.7°N of Moon
16 01:05 Venus 1.7°S of Regulus
17 11:32 NEW MOON
19 01:56 Mercury 3.5°S of Moon
19 23:56 Moon at Apogee: 406291 km
20 06:53 Regulus 4.2°S of Moon
20 21:00 Mars 3.3°S of Moon
24 20:01 Spica 2.8°S of Moon
25 08:05 Moon at Descending Node
25 15:07 FIRST QUARTER MOON
28 09 Delta-Aquarid Meteor Shower
28 10:11 Antares 1.3°S of Moon
28 11:21 Mercury 0.1°S of Regulus
Aug 01 11:31 FULL MOON
01 22:52 Moon at Perigee: 357311 km
03 03:21 Saturn 2.5°N of Moon
06 19:46 Moon at Ascending Node
07 17 Venus at Aphelion
08 02:41 Jupiter 2.9°S of Moon
08 03:28 LAST QUARTER MOON
09 05:16 Pleiades 1.5°N of Moon
09 19 Mercury at Greatest Elong: 27.4°E
10 11 Mercury at Aphelion
13 00 Perseid Meteor Shower
13 01 Mercury 4.7°S of Mars
13 04 Venus at Inferior Conjunction
13 14:36 Pollux 1.7°N of Moon
16 02:38 NEW MOON
16 04:55 Moon at Apogee: 406635 km
18 16:06 Mars 2.2°S of Moon
21 02:28 Spica 2.6°S of Moon
21 09:23 Moon at Descending Node
24 02:57 FIRST QUARTER MOON
24 18:29 Antares 1.1°S of Moon
27 01 Saturn at Opposition
30 08:51 Moon at Perigee: 357182 km
30 11:03 Saturn 2.5°N of Moon
30 18:35 FULL MOON
Sep 03 00:44 Moon at Ascending Node
04 12:44 Jupiter 3.3°S of Moon
05 12:25 Pleiades 1.2°N of Moon
06 04 Mercury at Inferior Conjunction
06 15:21 LAST QUARTER MOON
09 20:32 Pollux 1.5°N of Moon
12 08:42 Moon at Apogee: 406289 km
12 19:00 Regulus 4.1°S of Moon
14 18:40 NEW MOON
16 12:19 Mars 0.7°S of Moon: Occn.
17 08:12 Spica 2.4°S of Moon
17 12:18 Moon at Descending Node
19 03 Neptune at Opposition
21 00:50 Antares 0.9°S of Moon
22 06 Mercury at Greatest Elong: 17.9°W
22 12:32 FIRST QUARTER MOON
22 23:50 Autumnal Equinox
23 11 Mercury at Perihelion
26 18:25 Saturn 2.7°N of Moon
27 18:05 Moon at Perigee: 359911 km
29 02:57 FULL MOON
30 09:49 Moon at Ascending Node
Oct 01 20:16 Jupiter 3.4°S of Moon
02 21:25 Pleiades 1.1°N of Moon
06 06:48 LAST QUARTER MOON
07 03:23 Pollux 1.4°N of Moon
08 23:08 Venus 2.3°S of Regulus
09 20:41 Moon at Apogee: 405426 km
10 01:41 Regulus 4.2°S of Moon
14 10:55 NEW MOON
14 10:59 Annular Solar Eclipse; mag=0.952
14 18:11 Moon at Descending Node
18 06:17 Antares 0.9°S of Moon
19 22 Mercury at Superior Conjunction
21 17 Orionid Meteor Shower
21 20:29 FIRST QUARTER MOON
23 15 Venus at Greatest Elong: 46.4°W
24 00:52 Saturn 2.8°N of Moon
25 19:53 Moon at Perigee: 364873 km
27 20:14 Moon at Ascending Node
28 13:14 Partial Lunar Eclipse; mag=0.122
28 13:24 FULL MOON
29 01:10 Jupiter 3.1°S of Moon
30 07:30 Pleiades 1.1°N of Moon
Nov 02 21 Jupiter at Opposition
03 11:31 Pollux 1.4°N of Moon
05 01:37 LAST QUARTER MOON
05 17 S Taurid Meteor Shower
06 09:19 Regulus 4.2°S of Moon
06 14:49 Moon at Apogee: 404569 km
09 02:28 Venus 1.0°S of Moon: Occn.
10 22:09 Spica 2.4°S of Moon
11 01:49 Moon at Descending Node
12 17 N Taurid Meteor Shower
13 02:27 NEW MOON
13 11 Uranus at Opposition
14 12:42 Antares 0.9°S of Moon
16 14:17 Mercury 2.5°N of Antares
17 22 Mars in Conjunction with Sun
17 23 Leonid Meteor Shower
20 03:50 FIRST QUARTER MOON
20 07:02 Saturn 2.7°N of Moon
21 14:03 Moon at Perigee: 369824 km
24 04:02 Moon at Ascending Node
25 04:10 Jupiter 2.8°S of Moon
26 17:02 Pleiades 1.1°N of Moon
27 02:16 FULL MOON
28 02 Venus at Perihelion
29 03:27 Venus 3.9°N of Spica
30 20:23 Pollux 1.6°N of Moon
Dec 03 17:38 Regulus 4.0°S of Moon
04 07 Mercury at Greatest Elong: 21.3°E
04 11:42 Moon at Apogee: 404348 km
04 22:49 LAST QUARTER MOON
08 07:05 Spica 2.3°S of Moon
08 08:24 Moon at Descending Node
09 09:53 Venus 3.6°N of Moon
12 16:32 NEW MOON
13 22:18 Mercury 4.4°N of Moon
14 12 Geminid Meteor Shower
16 11:53 Moon at Perigee: 367900 km
17 14:58 Saturn 2.5°N of Moon
19 11:39 FIRST QUARTER MOON
20 10 Mercury at Perihelion
21 06:54 Moon at Ascending Node
21 20:28 Winter Solstice
22 07:20 Jupiter 2.6°S of Moon
22 12 Mercury at Inferior Conjunction
22 20 Ursid Meteor Shower
24 00:37 Pleiades 1.1°N of Moon
26 17:33 FULL MOON
28 04:51 Pollux 1.7°N of Moon
31 01:52 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
Mountain Standard Time
The following table gives the date and time of the Moon's phases for the year . The times listed are for Mountain Standard Time (Coordinated Universal Time − 7 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 | |||
| Mountain Standard Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| - | - | Jan 06 16:08 | Jan 14 19:10 |
| Jan 21 13:53 | Jan 28 08:19 | Feb 05 11:29 | Feb 13 09:01 |
| Feb 20 00:06 | Feb 27 01:06 | Mar 07 05:40 | Mar 14 19:08 |
| Mar 21 10:23 | Mar 28 19:32 | Apr 05 21:35 | Apr 13 02:11 |
| Apr 19 21:12 H | Apr 27 14:20 | May 05 10:34 n | May 12 07:28 |
| May 19 08:53 | May 27 08:22 | Jun 03 20:42 | Jun 10 12:31 |
| Jun 17 21:37 | Jun 26 00:50 | Jul 03 04:39 | Jul 09 18:48 |
| Jul 17 11:32 | Jul 25 15:07 | Aug 01 11:31 | Aug 08 03:28 |
| Aug 16 02:38 | Aug 24 02:57 | Aug 30 18:35 | Sep 06 15:21 |
| Sep 14 18:40 | Sep 22 12:32 | Sep 29 02:57 | Oct 06 06:48 |
| Oct 14 10:55 A | Oct 21 20:29 | Oct 28 13:24 p | Nov 05 01:37 |
| Nov 13 02:27 | Nov 20 03:50 | Nov 27 02:16 | Dec 04 22:49 |
| Dec 12 16:32 | Dec 19 11:39 | Dec 26 17:33 | - |
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)