2025 Calendar of Astronomical Events




    


2025 Phases of the Moon

Alaska Standard Time

The following table gives the date and time of the Moon's phases for the year. If Daylight Saving Time is in effect, add one hour to the times listed.

2025 Phases of the Moon
Alaska Standard Time
New Moon First Quarter Full Moon Last Quarter
- Jan 6 14:56 Jan 13 13:27 Jan 21 11:31
Jan 29 03:36 Feb 4 23:02 Feb 12 04:53 Feb 20 08:33
Feb 27 15:45 Mar 6 07:32 Mar 13 21:55 t Mar 22 02:30
Mar 29 01:58 P Apr 4 17:15 Apr 12 15:22 Apr 20 16:36
Apr 27 10:31 May 4 04:52 May 12 07:56 May 20 02:59
May 26 18:02 Jun 2 18:41 Jun 10 22:44 Jun 18 10:19
Jun 25 01:31 Jul 2 10:30 Jul 10 11:37 Jul 17 15:38
Jul 24 10:11 Aug 1 03:41 Aug 8 22:55 Aug 15 20:12
Aug 22 21:06 Aug 30 21:25 Sep 7 09:09 t Sep 14 01:33
Sep 21 10:54 P Sep 29 14:54 Oct 6 18:47 Oct 13 09:13
Oct 21 03:25 Oct 29 07:21 Nov 5 04:19 Nov 11 20:28
Nov 19 21:47 Nov 27 21:59 Dec 4 14:14 Dec 11 11:52
Dec 19 16:43 Dec 27 10:10 --

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 table above. 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.

Phases of the Moon Photo Gallery is an image collection showing the Moon's phases over a complete synodic month.



2025 Calendar of Astronomical Events

Alaska Standard Time

The following table gives the date and time of the important astronomical events for the year. If Daylight Saving Time is in effect, add one hour to the times listed. A key to astronomical terms appears below the calendar.

2025 Calendar of Astronomical Events
January - June July - December
Date     AKST   Even
        (h:m)

Jan 03  06:24  Venus 1.4°N of Moon
    03  06     Quadrantid Meteor Shower
    04  05     Earth at Perihelion: 0.98333 AU
    04  08:18  Saturn 0.7°S of Moon: Occn.
    05  10:46  Moon at Ascending Node 
    06  14:56  FIRST QUARTER MOON 
    07  14:34  Moon at Perigee: 370173 km
    09  16:01  Pleiades 0.3°S of Moon
    09  19     Venus at Greatest Elong: 47.2°E
    10  14:13  Jupiter 5.4°S of Moon
    13  12:45  Pollux 2.1°N of Moon
    13  13:27  FULL MOON 
    13  18:42  Mars 0.2°S of Moon: Occn.
    14  12:03  Beehive 2.6°S of Moon
    15  16     Mars at Opposition 
    16  05:57  Regulus 2.2°S of Moon
    18  16:48  Moon at Descending Node 
    19  05     Mercury at Aphelion 
    20  18:53  Spica 0.1°N of Moon
    20  19:55  Moon at Apogee: 404299 km
    21  11:31  LAST QUARTER MOON 
    23  08:07  Mars 2.3°S of Pollux
    24  14:34  Antares 0.3°N of Moon
    29  03:36  NEW MOON 
    31  11:27  Jupiter 5.1°N of Aldebaran
    31  19:46  Saturn 1.1°S of Moon: Occn.

Feb 01  11:27  Venus 2.3°N of Moon
    01  13:06  Moon at Ascending Node 
    01  17:43  Moon at Perigee: 367457 km
    04  23:02  FIRST QUARTER MOON 
    05  21:43  Pleiades 0.5°S of Moon
    06  18:35  Jupiter 5.5°S of Moon
    09  03     Mercury at Superior Conjunction 
    09  10:36  Mars 0.8°S of Moon: Occn.
    09  20:19  Pollux 2.1°N of Moon
    10  20:03  Beehive 2.6°S of Moon
    12  04:53  FULL MOON 
    12  14:21  Regulus 2.2°S of Moon
    14  21:53  Moon at Descending Node 
    17  03:01  Spica 0.3°N of Moon
    17  16:11  Moon at Apogee: 404882 km
    19  09     Venus at Perihelion 
    20  08:33  LAST QUARTER MOON 
    20  23:21  Antares 0.4°N of Moon
    25  00     Mercury 1.4° of Saturn
    27  15:45  NEW MOON 
    28  19:03  Mercury 0.4°N of Moon: Occn.
    28  20:40  Moon at Ascending Node 

Mar 01  12:18  Moon at Perigee: 361967 km
    04  05     Mercury at Perihelion 
    05  03:32  Pleiades 0.6°S of Moon
    06  02:31  Jupiter 5.6°S of Moon
    06  07:32  FIRST QUARTER MOON 
    07  21     Mercury at Greatest Elong: 18.2°E
    08  15:27  Mars 1.7°S of Moon
    09  02:06  Pollux 2.0°N of Moon
    10  02:10  Beehive 2.6°S of Moon
    11  21:07  Regulus 2.2°S of Moon
    12  01     Saturn in Conjunction with Sun 
    12  09     Mercury 5.5° of Venus
    13  21:55  FULL MOON 
    13  21:59  Total Lunar Eclipse; mag=1.178
    14  04:45  Moon at Descending Node 
    16  10:16  Spica 0.3°N of Moon
    17  07:37  Moon at Apogee: 405754 km
    19  13     Neptune in Conjunction with Sun 
    20  00:02  Vernal Equinox 
    20  06:58  Antares 0.5°N of Moon
    22  02:30  LAST QUARTER MOON 
    22  16     Venus at Inferior Conjunction 
    24  11     Mercury at Inferior Conjunction 
    28  07:29  Moon at Ascending Node 
    29  01:47  Partial Solar Eclipse; mag=0.938
    29  01:58  NEW MOON 
    29  10:29  Mars 3.9°S of Pollux
    29  20:26  Moon at Perigee: 358127 km

Apr 01  11:28  Pleiades 0.6°S of Moon
    02  15:24  Jupiter 5.5°S of Moon
    04  17:15  FIRST QUARTER MOON 
    05  07:46  Pollux 2.0°N of Moon
    05  10:04  Mars 2.2°S of Moon
    06  07:44  Beehive 2.6°S of Moon
    08  02:51  Regulus 2.2°S of Moon
    10  03     Mercury 2.1° of Saturn
    10  10:56  Moon at Descending Node 
    12  15:22  FULL MOON 
    12  16:39  Spica 0.3°N of Moon
    13  13:48  Moon at Apogee: 406295 km
    16  13:19  Antares 0.4°N of Moon
    16  14     Mars at Aphelion 
    20  16:36  LAST QUARTER MOON 
    21  10     Mercury at Greatest Elong: 27.4°W
    22  04     Lyrid Meteor Shower
    24  16:21  Venus 2.4°N of Moon
    24  17:23  Moon at Ascending Node 
    24  19:15  Saturn 2.3°S of Moon
    25  16:05  Mercury 4.4°S of Moon
    27  07:15  Moon at Perigee: 357119 km
    27  10:31  NEW MOON 
    28  21:35  Pleiades 0.5°S of Moon
    30  08:34  Jupiter 5.4°S of Moon

May 02  15:02  Pollux 2.1°N of Moon
    03  14:12  Mars 2.1°S of Moon
    03  14:27  Beehive 2.5°S of Moon
    04  03:03  Mars 0.3°N of Beehive
    04  04:52  FIRST QUARTER MOON 
    04  17     Eta-Aquarid Meteor Shower
    05  08:58  Regulus 2.0°S of Moon
    07  14:44  Moon at Descending Node 
    09  22:43  Spica 0.4°N of Moon
    10  15:49  Moon at Apogee: 406245 km
    12  07:56  FULL MOON 
    13  19:10  Antares 0.3°N of Moon
    17  16     Uranus in Conjunction with Sun 
    20  02:59  LAST QUARTER MOON 
    21  23:05  Moon at Ascending Node 
    22  08:51  Saturn 2.8°S of Moon
    23  14:52  Venus 4.0°S of Moon
    25  16:37  Moon at Perigee: 359023 km
    26  18:02  NEW MOON 
    29  19     Mercury at Superior Conjunction 
    30  00:13  Pollux 2.3°N of Moon
    30  23:00  Beehive 2.2°S of Moon
    31  04     Mercury at Perihelion 
    31  17     Venus at Greatest Elong: 45.9°W

Jun 01  00:49  Mars 1.4°S of Moon
    01  16:30  Regulus 1.8°S of Moon
    02  18:41  FIRST QUARTER MOON 
    03  16:33  Moon at Descending Node 
    06  05:15  Spica 0.5°N of Moon
    07  01:42  Moon at Apogee: 405553 km
    10  01:25  Antares 0.3°N of Moon
    10  22:44  FULL MOON 
    11  18     Venus at Aphelion 
    16  17:05  Mars 0.7°N of Regulus
    18  00:41  Moon at Ascending Node 
    18  10:19  LAST QUARTER MOON 
    18  18:47  Saturn 3.4°S of Moon
    20  17:42  Summer Solstice 
    21  10:51  Mercury 4.8°S of Pollux
    22  17:59  Pleiades 0.6°S of Moon
    22  19:43  Moon at Perigee: 363178 km
    24  06     Jupiter in Conjunction with Sun 
    25  01:31  NEW MOON 
    26  21:02  Mercury 2.9°S of Moon
    27  08:42  Beehive 2.0°S of Moon
    29  01:26  Regulus 1.5°S of Moon
    29  16:05  Mars 0.2°S of Moon: Occn.
    30  18:46  Moon at Descending Node 

Date     AKST   Even
        (h:m)

Jul 02  08:36  Mercury 1.2°S of Beehive
    02  10:30  FIRST QUARTER MOON 
    03  12     Earth at Aphelion: 1.01664 AU
    03  12:39  Spica 0.8°N of Moon
    03  19     Mercury at Greatest Elong: 25.9°E
    04  06:44  Venus 6.5°S of Pleiades
    04  17:29  Moon at Apogee: 404627 km
    07  08:37  Antares 0.4°N of Moon
    10  11:37  FULL MOON 
    12  23:32  Venus 3.1°N of Aldebaran
    14  04     Mercury at Aphelion 
    15  01:42  Moon at Ascending Node 
    16  01:19  Saturn 3.8°S of Moon
    17  15:38  LAST QUARTER MOON 
    20  01:27  Pleiades 0.7°S of Moon
    20  04:52  Moon at Perigee: 368047 km
    22  19:20  Jupiter 4.9°S of Moon
    24  10:11  NEW MOON 
    26  10:44  Regulus 1.4°S of Moon
    27  19     Delta-Aquarid Meteor Shower
    27  23:30  Moon at Descending Node 
    28  10:45  Mars 1.3°N of Moon
    30  20:45  Spica 1.0°N of Moon
    31  15     Mercury at Inferior Conjunction 

Aug 01  03:41  FIRST QUARTER MOON 
    01  11:37  Moon at Apogee: 404164 km
    03  16:40  Antares 0.6°N of Moon
    08  22:55  FULL MOON 
    11  05:53  Moon at Ascending Node 
    12  06:05  Saturn 4.0°S of Moon
    12  11     Perseid Meteor Shower
    14  09:01  Moon at Perigee: 369287 km
    15  20:12  LAST QUARTER MOON 
    16  07:09  Pleiades 0.9°S of Moon
    18  19:58  Mercury 2.6°S of Beehive
    19  01     Mercury at Greatest Elong: 18.6°W
    19  12:05  Jupiter 4.8°S of Moon
    19  21:15  Venus 7.1°S of Pollux
    20  01:51  Venus 4.9°S of Moon
    20  03:07  Pollux 2.4°N of Moon
    21  02:09  Beehive 2.0°S of Moon
    21  07:14  Mercury 3.7°S of Moon
    22  21:06  NEW MOON 
    24  06:41  Moon at Descending Node 
    26  07:41  Mars 2.8°N of Moon
    27  03     Mercury at Perihelion 
    27  04:57  Spica 1.1°N of Moon
    29  06:34  Moon at Apogee: 404552 km
    30  21:25  FIRST QUARTER MOON 
    31  00:55  Antares 0.7°N of Moon
    31  08:57  Venus 1.4°S of Beehive

Sep 07  09:09  FULL MOON 
    07  09:12  Total Lunar Eclipse; mag=1.362
    07  14:08  Moon at Ascending Node 
    08  11:09  Saturn 4.0°S of Moon
    10  03:09  Moon at Perigee: 364781 km
    12  12:48  Pleiades 1.0°S of Moon
    12  18:28  Mars 2.0°N of Spica
    13  02     Mercury at Superior Conjunction 
    14  01:33  LAST QUARTER MOON 
    16  02:06  Jupiter 4.6°S of Moon
    16  08:58  Pollux 2.4°N of Moon
    17  08:24  Beehive 2.0°S of Moon
    18  23:57  Venus 0.4°N of Regulus
    19  02:11  Regulus 1.3°S of Moon
    19  02:46  Venus 0.8°S of Moon: Occn.
    20  14:13  Moon at Descending Node 
    20  20     Saturn at Opposition 
    21  10:42  Partial Solar Eclipse; mag=0.855
    21  10:54  NEW MOON 
    22  09:20  Autumnal Equinox 
    23  02     Neptune at Opposition 
    23  12:31  Spica 1.1°N of Moon
    24  05:50  Mars 3.9°N of Moon
    26  00:46  Moon at Apogee: 405552 km
    27  08:34  Antares 0.6°N of Moon
    29  14:54  FIRST QUARTER MOON 

Oct 02  02     Venus at Perihelion 
    05  00:20  Moon at Ascending Node 
    05  17:46  Saturn 3.8°S of Moon
    06  18:47  FULL MOON 
    08  03:36  Moon at Perigee: 359819 km
    08  12:17  Jupiter 6.6°S of Pollux
    09  20:20  Pleiades 0.9°S of Moon
    13  09:13  LAST QUARTER MOON 
    13  13:31  Jupiter 4.3°S of Moon
    13  14:31  Pollux 2.5°N of Moon
    14  13:53  Beehive 1.9°S of Moon
    16  07:56  Regulus 1.3°S of Moon
    17  19:34  Moon at Descending Node 
    19  11     Mercury 2.0° of Mars
    19  12:37  Venus 3.7°N of Moon
    21  03     Orionid Meteor Shower
    21  03:25  NEW MOON 
    23  07:15  Mercury 2.3°N of Moon
    23  14:31  Moon at Apogee: 406445 km
    24  15:15  Antares 0.5°N of Moon
    29  07:21  FIRST QUARTER MOON 
    29  13     Mercury at Greatest Elong: 23.9°E

Nov 01  08:46  Moon at Ascending Node 
    01  16:02  Venus 3.3°N of Spica
    02  01:46  Saturn 3.7°S of Moon
    05  04     S Taurid Meteor Shower
    05  04:19  FULL MOON 
    05  13:29  Moon at Perigee: 356833 km
    06  06:26  Pleiades 0.8°S of Moon
    08  17:41  Mercury 2.6°N of Antares
    09  21:40  Pollux 2.7°N of Moon
    09  22:56  Jupiter 4.0°S of Moon
    10  20:27  Beehive 1.7°S of Moon
    11  20:28  LAST QUARTER MOON 
    12  03     N Taurid Meteor Shower
    12  13:51  Regulus 1.1°S of Moon
    12  19     Mercury 1.2° of Mars
    13  21:38  Moon at Descending Node 
    17  01:11  Spica 1.2°N of Moon
    17  09     Leonid Meteor Shower
    19  17:48  Moon at Apogee: 406693 km
    19  21:47  NEW MOON 
    20  00     Mercury at Inferior Conjunction 
    21  04     Uranus at Opposition 
    23  02     Mercury at Perihelion 
    27  21:59  FIRST QUARTER MOON 
    28  12:33  Moon at Ascending Node 
    29  10:08  Saturn 3.7°S of Moon

Dec 03  17:54  Pleiades 0.8°S of Moon
    04  02:06  Moon at Perigee: 356962 km
    04  14:14  FULL MOON 
    07  06:48  Jupiter 3.7°S of Moon
    07  07:21  Pollux 2.9°N of Moon
    07  12     Mercury at Greatest Elong: 20.7°W
    08  05:23  Beehive 1.5°S of Moon
    09  21:32  Regulus 0.8°S of Moon
    10  22:35  Moon at Descending Node 
    11  11:52  LAST QUARTER MOON 
    13  22     Geminid Meteor Shower
    14  07:27  Spica 1.4°N of Moon
    16  21:09  Moon at Apogee: 406324 km
    17  15:19  Jupiter 6.4°S of Pollux
    19  05:05  Mercury 5.4°N of Antares
    19  16:43  NEW MOON 
    21  06:03  Winter Solstice 
    22  07     Ursid Meteor Shower
    25  13:03  Moon at Ascending Node 
    26  18:24  Saturn 4.0°S of Moon
    27  10:10  FIRST QUARTER MOON 
    31  04:21  Pleiades 0.9°S of Moon

    

Astronomical Definitions

  • Perihelion - the instant when a planet is closest to the Sun
  • Aphelion - the instant when a planet is furthest from the Sun
  • Perigee - the instant when the Moon is closest to Earth
  • Apogee - the instant when the Moon is furthest from Earth
  • Inferior Conjunction - the instant when a planet passes between Earth and the Sun (Mercury or Venus)
  • Superior Conjunction - the instant when a planet passes on the opposite side of the Sun from Earth (Mercury or Venus)
  • Greatest Elongation - elongation is the apparent angle between a planet and the Sun 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 - the instant when a planet appears opposite the Sun as seen from Earth
  • Conjunction - the instant when a planet appears closest the Sun as seen from Earth
  • Occultation - the Moon occults or eclipses a star or planet
  • Ascending Node - the point where a planet crosses from the southern to northern portion of its orbit
  • Descending Node - the point where a planet crosses from the northern to the southern portion of its orbit



Calendars for Other Years and Time Zones

The table below contains links to astronomical events calendars for a range of years and Time Zones. Abbreviations for the time zones are: GMT = Greenwich Mean Time, AST = Atlantic Standard Time, EST = Eastern Standard Time, CST = Central Standard Time, MST = Mountain Standard Time, PST = Pacific Standard Time, AKST = Alaskan Standard Time, and HST = Hawaiian Standard Time.

Calendar of Astronomical Events
GMT 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
AST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
EST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
CST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
MST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
PST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
AKST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
HST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

For years or time zones not covered above, please visit SKYCAL the astronomical events calendar generator.

Accuracy

The times of astronomical events listed with a precision in hours and minutes (i.e., hh:mm) are accurate to the nearest minute. Similarly, the times of astronomical events listed with a precision in hours (i.e., hh) are accurate to the nearest hour.

A simplified solar ephemeris results an accuracy of ±0.5 hours for the perihelion and aphelion of Earth. The algorithm used in the perihelion and aphelion of the other planets is based on unperturbed elliptical orbits. For Mars, the accuracy is about 2 hours. Due to mutual planetary perturbations, the times for Jupiter may be in error by several weeks, while Saturn's times may be in error by a month. The times for Uranus and Neptune may be in error by several months. In the future, we plan to develop algorithms to improve the computed times of perihelion and aphelion of the planets.

Acknowledgements

All calculations are by Fred Espenak, and he assumes full responsibility for their accuracy. Algorithms used in predicting the phases of the Moon, eclipses and other sky phenomena 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:


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