2025 Calendar of Astronomical Events




    


2025 Phases of the Moon

Mountain 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
Mountain Standard Time
New Moon First Quarter Full Moon Last Quarter
- Jan 6 16:56 Jan 13 15:27 Jan 21 13:31
Jan 29 05:36 Feb 5 01:02 Feb 12 06:53 Feb 20 10:33
Feb 27 17:45 Mar 6 09:32 Mar 13 23:55 t Mar 22 04:30
Mar 29 03:58 P Apr 4 19:15 Apr 12 17:22 Apr 20 18:36
Apr 27 12:31 May 4 06:52 May 12 09:56 May 20 04:59
May 26 20:02 Jun 2 20:41 Jun 11 00:44 Jun 18 12:19
Jun 25 03:31 Jul 2 12:30 Jul 10 13:37 Jul 17 17:38
Jul 24 12:11 Aug 1 05:41 Aug 9 00:55 Aug 15 22:12
Aug 22 23:06 Aug 30 23:25 Sep 7 11:09 t Sep 14 03:33
Sep 21 12:54 P Sep 29 16:54 Oct 6 20:47 Oct 13 11:13
Oct 21 05:25 Oct 29 09:21 Nov 5 06:19 Nov 11 22:28
Nov 19 23:47 Nov 27 23:59 Dec 4 16:14 Dec 11 13:52
Dec 19 18:43 Dec 27 12:10 --

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

Mountain 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     MST   Event
        (h:m)

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

Feb 01  13:27  Venus 2.3°N of Moon
    01  15:06  Moon at Ascending Node 
    01  19:43  Moon at Perigee: 367457 km
    05  01:02  FIRST QUARTER MOON 
    05  23:43  Pleiades 0.5°S of Moon
    06  20:35  Jupiter 5.5°S of Moon
    09  05     Mercury at Superior Conjunction 
    09  12:36  Mars 0.8°S of Moon: Occn.
    09  22:19  Pollux 2.1°N of Moon
    10  22:03  Beehive 2.6°S of Moon
    12  06:53  FULL MOON 
    12  16:21  Regulus 2.2°S of Moon
    14  23:53  Moon at Descending Node 
    17  05:01  Spica 0.3°N of Moon
    17  18:11  Moon at Apogee: 404882 km
    19  11     Venus at Perihelion 
    20  10:33  LAST QUARTER MOON 
    21  01:21  Antares 0.4°N of Moon
    25  02     Mercury 1.4° of Saturn
    27  17:45  NEW MOON 
    28  21:03  Mercury 0.4°N of Moon: Occn.
    28  22:40  Moon at Ascending Node 

Mar 01  14:18  Moon at Perigee: 361967 km
    04  07     Mercury at Perihelion 
    05  05:32  Pleiades 0.6°S of Moon
    06  04:31  Jupiter 5.6°S of Moon
    06  09:32  FIRST QUARTER MOON 
    07  23     Mercury at Greatest Elong: 18.2°E
    08  17:27  Mars 1.7°S of Moon
    09  04:06  Pollux 2.0°N of Moon
    10  04:10  Beehive 2.6°S of Moon
    11  23:07  Regulus 2.2°S of Moon
    12  03     Saturn in Conjunction with Sun 
    12  11     Mercury 5.5° of Venus
    13  23:55  FULL MOON 
    13  23:59  Total Lunar Eclipse; mag=1.178
    14  06:45  Moon at Descending Node 
    16  12:16  Spica 0.3°N of Moon
    17  09:37  Moon at Apogee: 405754 km
    19  15     Neptune in Conjunction with Sun 
    20  02:02  Vernal Equinox 
    20  08:58  Antares 0.5°N of Moon
    22  04:30  LAST QUARTER MOON 
    22  18     Venus at Inferior Conjunction 
    24  13     Mercury at Inferior Conjunction 
    28  09:29  Moon at Ascending Node 
    29  03:47  Partial Solar Eclipse; mag=0.938
    29  03:58  NEW MOON 
    29  12:29  Mars 3.9°S of Pollux
    29  22:26  Moon at Perigee: 358127 km

Apr 01  13:28  Pleiades 0.6°S of Moon
    02  17:24  Jupiter 5.5°S of Moon
    04  19:15  FIRST QUARTER MOON 
    05  09:46  Pollux 2.0°N of Moon
    05  12:04  Mars 2.2°S of Moon
    06  09:44  Beehive 2.6°S of Moon
    08  04:51  Regulus 2.2°S of Moon
    10  05     Mercury 2.1° of Saturn
    10  12:56  Moon at Descending Node 
    12  17:22  FULL MOON 
    12  18:39  Spica 0.3°N of Moon
    13  15:48  Moon at Apogee: 406295 km
    16  15:19  Antares 0.4°N of Moon
    16  16     Mars at Aphelion 
    20  18:36  LAST QUARTER MOON 
    21  12     Mercury at Greatest Elong: 27.4°W
    22  06     Lyrid Meteor Shower
    24  18:21  Venus 2.4°N of Moon
    24  19:23  Moon at Ascending Node 
    24  21:15  Saturn 2.3°S of Moon
    25  18:05  Mercury 4.4°S of Moon
    27  09:15  Moon at Perigee: 357119 km
    27  12:31  NEW MOON 
    28  23:35  Pleiades 0.5°S of Moon
    30  10:34  Jupiter 5.4°S of Moon

May 02  17:02  Pollux 2.1°N of Moon
    03  16:12  Mars 2.1°S of Moon
    03  16:27  Beehive 2.5°S of Moon
    04  05:03  Mars 0.3°N of Beehive
    04  06:52  FIRST QUARTER MOON 
    04  19     Eta-Aquarid Meteor Shower
    05  10:58  Regulus 2.0°S of Moon
    07  16:44  Moon at Descending Node 
    10  00:43  Spica 0.4°N of Moon
    10  17:49  Moon at Apogee: 406245 km
    12  09:56  FULL MOON 
    13  21:10  Antares 0.3°N of Moon
    17  18     Uranus in Conjunction with Sun 
    20  04:59  LAST QUARTER MOON 
    22  01:05  Moon at Ascending Node 
    22  10:51  Saturn 2.8°S of Moon
    23  16:52  Venus 4.0°S of Moon
    25  18:37  Moon at Perigee: 359023 km
    26  20:02  NEW MOON 
    29  21     Mercury at Superior Conjunction 
    30  02:13  Pollux 2.3°N of Moon
    31  01:00  Beehive 2.2°S of Moon
    31  06     Mercury at Perihelion 
    31  19     Venus at Greatest Elong: 45.9°W

Jun 01  02:49  Mars 1.4°S of Moon
    01  18:30  Regulus 1.8°S of Moon
    02  20:41  FIRST QUARTER MOON 
    03  18:33  Moon at Descending Node 
    06  07:15  Spica 0.5°N of Moon
    07  03:42  Moon at Apogee: 405553 km
    10  03:25  Antares 0.3°N of Moon
    11  00:44  FULL MOON 
    11  20     Venus at Aphelion 
    16  19:05  Mars 0.7°N of Regulus
    18  02:41  Moon at Ascending Node 
    18  12:19  LAST QUARTER MOON 
    18  20:47  Saturn 3.4°S of Moon
    20  19:42  Summer Solstice 
    21  12:51  Mercury 4.8°S of Pollux
    22  19:59  Pleiades 0.6°S of Moon
    22  21:43  Moon at Perigee: 363178 km
    24  08     Jupiter in Conjunction with Sun 
    25  03:31  NEW MOON 
    26  23:02  Mercury 2.9°S of Moon
    27  10:42  Beehive 2.0°S of Moon
    29  03:26  Regulus 1.5°S of Moon
    29  18:05  Mars 0.2°S of Moon: Occn.
    30  20:46  Moon at Descending Node 

Date     MST   Event
        (h:m)

Jul 02  10:36  Mercury 1.2°S of Beehive
    02  12:30  FIRST QUARTER MOON 
    03  14     Earth at Aphelion: 1.01664 AU
    03  14:39  Spica 0.8°N of Moon
    03  21     Mercury at Greatest Elong: 25.9°E
    04  08:44  Venus 6.5°S of Pleiades
    04  19:29  Moon at Apogee: 404627 km
    07  10:37  Antares 0.4°N of Moon
    10  13:37  FULL MOON 
    13  01:32  Venus 3.1°N of Aldebaran
    14  06     Mercury at Aphelion 
    15  03:42  Moon at Ascending Node 
    16  03:19  Saturn 3.8°S of Moon
    17  17:38  LAST QUARTER MOON 
    20  03:27  Pleiades 0.7°S of Moon
    20  06:52  Moon at Perigee: 368047 km
    22  21:20  Jupiter 4.9°S of Moon
    24  12:11  NEW MOON 
    26  12:44  Regulus 1.4°S of Moon
    27  21     Delta-Aquarid Meteor Shower
    28  01:30  Moon at Descending Node 
    28  12:45  Mars 1.3°N of Moon
    30  22:45  Spica 1.0°N of Moon
    31  17     Mercury at Inferior Conjunction 

Aug 01  05:41  FIRST QUARTER MOON 
    01  13:37  Moon at Apogee: 404164 km
    03  18:40  Antares 0.6°N of Moon
    09  00:55  FULL MOON 
    11  07:53  Moon at Ascending Node 
    12  08:05  Saturn 4.0°S of Moon
    12  13     Perseid Meteor Shower
    14  11:01  Moon at Perigee: 369287 km
    15  22:12  LAST QUARTER MOON 
    16  09:09  Pleiades 0.9°S of Moon
    18  21:58  Mercury 2.6°S of Beehive
    19  03     Mercury at Greatest Elong: 18.6°W
    19  14:05  Jupiter 4.8°S of Moon
    19  23:15  Venus 7.1°S of Pollux
    20  03:51  Venus 4.9°S of Moon
    20  05:07  Pollux 2.4°N of Moon
    21  04:09  Beehive 2.0°S of Moon
    21  09:14  Mercury 3.7°S of Moon
    22  23:06  NEW MOON 
    24  08:41  Moon at Descending Node 
    26  09:41  Mars 2.8°N of Moon
    27  05     Mercury at Perihelion 
    27  06:57  Spica 1.1°N of Moon
    29  08:34  Moon at Apogee: 404552 km
    30  23:25  FIRST QUARTER MOON 
    31  02:55  Antares 0.7°N of Moon
    31  10:57  Venus 1.4°S of Beehive

Sep 07  11:09  FULL MOON 
    07  11:12  Total Lunar Eclipse; mag=1.362
    07  16:08  Moon at Ascending Node 
    08  13:09  Saturn 4.0°S of Moon
    10  05:09  Moon at Perigee: 364781 km
    12  14:48  Pleiades 1.0°S of Moon
    12  20:28  Mars 2.0°N of Spica
    13  04     Mercury at Superior Conjunction 
    14  03:33  LAST QUARTER MOON 
    16  04:06  Jupiter 4.6°S of Moon
    16  10:58  Pollux 2.4°N of Moon
    17  10:24  Beehive 2.0°S of Moon
    19  01:57  Venus 0.4°N of Regulus
    19  04:11  Regulus 1.3°S of Moon
    19  04:46  Venus 0.8°S of Moon: Occn.
    20  16:13  Moon at Descending Node 
    20  22     Saturn at Opposition 
    21  12:42  Partial Solar Eclipse; mag=0.855
    21  12:54  NEW MOON 
    22  11:20  Autumnal Equinox 
    23  04     Neptune at Opposition 
    23  14:31  Spica 1.1°N of Moon
    24  07:50  Mars 3.9°N of Moon
    26  02:46  Moon at Apogee: 405552 km
    27  10:34  Antares 0.6°N of Moon
    29  16:54  FIRST QUARTER MOON 

Oct 02  04     Venus at Perihelion 
    05  02:20  Moon at Ascending Node 
    05  19:46  Saturn 3.8°S of Moon
    06  20:47  FULL MOON 
    08  05:36  Moon at Perigee: 359819 km
    08  14:17  Jupiter 6.6°S of Pollux
    09  22:20  Pleiades 0.9°S of Moon
    13  11:13  LAST QUARTER MOON 
    13  15:31  Jupiter 4.3°S of Moon
    13  16:31  Pollux 2.5°N of Moon
    14  15:53  Beehive 1.9°S of Moon
    16  09:56  Regulus 1.3°S of Moon
    17  21:34  Moon at Descending Node 
    19  13     Mercury 2.0° of Mars
    19  14:37  Venus 3.7°N of Moon
    21  05     Orionid Meteor Shower
    21  05:25  NEW MOON 
    23  09:15  Mercury 2.3°N of Moon
    23  16:31  Moon at Apogee: 406445 km
    24  17:15  Antares 0.5°N of Moon
    29  09:21  FIRST QUARTER MOON 
    29  15     Mercury at Greatest Elong: 23.9°E

Nov 01  10:46  Moon at Ascending Node 
    01  18:02  Venus 3.3°N of Spica
    02  03:46  Saturn 3.7°S of Moon
    05  06     S Taurid Meteor Shower
    05  06:19  FULL MOON 
    05  15:29  Moon at Perigee: 356833 km
    06  08:26  Pleiades 0.8°S of Moon
    08  19:41  Mercury 2.6°N of Antares
    09  23:40  Pollux 2.7°N of Moon
    10  00:56  Jupiter 4.0°S of Moon
    10  22:27  Beehive 1.7°S of Moon
    11  22:28  LAST QUARTER MOON 
    12  05     N Taurid Meteor Shower
    12  15:51  Regulus 1.1°S of Moon
    12  21     Mercury 1.2° of Mars
    13  23:38  Moon at Descending Node 
    17  03:11  Spica 1.2°N of Moon
    17  11     Leonid Meteor Shower
    19  19:48  Moon at Apogee: 406693 km
    19  23:47  NEW MOON 
    20  02     Mercury at Inferior Conjunction 
    21  06     Uranus at Opposition 
    23  04     Mercury at Perihelion 
    27  23:59  FIRST QUARTER MOON 
    28  14:33  Moon at Ascending Node 
    29  12:08  Saturn 3.7°S of Moon

Dec 03  19:54  Pleiades 0.8°S of Moon
    04  04:06  Moon at Perigee: 356962 km
    04  16:14  FULL MOON 
    07  08:48  Jupiter 3.7°S of Moon
    07  09:21  Pollux 2.9°N of Moon
    07  14     Mercury at Greatest Elong: 20.7°W
    08  07:23  Beehive 1.5°S of Moon
    09  23:32  Regulus 0.8°S of Moon
    11  00:35  Moon at Descending Node 
    11  13:52  LAST QUARTER MOON 
    14  00     Geminid Meteor Shower
    14  09:27  Spica 1.4°N of Moon
    16  23:09  Moon at Apogee: 406324 km
    17  17:19  Jupiter 6.4°S of Pollux
    19  07:05  Mercury 5.4°N of Antares
    19  18:43  NEW MOON 
    21  08:03  Winter Solstice 
    22  09     Ursid Meteor Shower
    25  15:03  Moon at Ascending Node 
    26  20:24  Saturn 4.0°S of Moon
    27  12:10  FIRST QUARTER MOON 
    31  06:21  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:


Return to: Planetary Ephemeris Data