2025 Calendar of Astronomical Events




    


2025 Phases of the Moon

Hawaiian 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
Hawaiian Standard Time
New Moon First Quarter Full Moon Last Quarter
- Jan 6 13:56 Jan 13 12:27 Jan 21 10:31
Jan 29 02:36 Feb 4 22:02 Feb 12 03:53 Feb 20 07:33
Feb 27 14:45 Mar 6 06:32 Mar 13 20:55 t Mar 22 01:30
Mar 29 00:58 P Apr 4 16:15 Apr 12 14:22 Apr 20 15:36
Apr 27 09:31 May 4 03:52 May 12 06:56 May 20 01:59
May 26 17:02 Jun 2 17:41 Jun 10 21:44 Jun 18 09:19
Jun 25 00:31 Jul 2 09:30 Jul 10 10:37 Jul 17 14:38
Jul 24 09:11 Aug 1 02:41 Aug 8 21:55 Aug 15 19:12
Aug 22 20:06 Aug 30 20:25 Sep 7 08:09 t Sep 14 00:33
Sep 21 09:54 P Sep 29 13:54 Oct 6 17:47 Oct 13 08:13
Oct 21 02:25 Oct 29 06:21 Nov 5 03:19 Nov 11 19:28
Nov 19 20:47 Nov 27 20:59 Dec 4 13:14 Dec 11 10:52
Dec 19 15:43 Dec 27 09:10 --

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

Hawaiian 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     HST   Event
        (h:m)

Jan 03  05:24  Venus 1.4°N of Moon
    03  05     Quadrantid Meteor Shower
    04  04     Earth at Perihelion: 0.98333 AU
    04  07:18  Saturn 0.7°S of Moon: Occn.
    05  09:46  Moon at Ascending Node 
    06  13:56  FIRST QUARTER MOON 
    07  13:34  Moon at Perigee: 370173 km
    09  15:01  Pleiades 0.3°S of Moon
    09  18     Venus at Greatest Elong: 47.2°E
    10  13:13  Jupiter 5.4°S of Moon
    13  11:45  Pollux 2.1°N of Moon
    13  12:27  FULL MOON 
    13  17:42  Mars 0.2°S of Moon: Occn.
    14  11:03  Beehive 2.6°S of Moon
    15  15     Mars at Opposition 
    16  04:57  Regulus 2.2°S of Moon
    18  15:48  Moon at Descending Node 
    19  04     Mercury at Aphelion 
    20  17:53  Spica 0.1°N of Moon
    20  18:55  Moon at Apogee: 404299 km
    21  10:31  LAST QUARTER MOON 
    23  07:07  Mars 2.3°S of Pollux
    24  13:34  Antares 0.3°N of Moon
    29  02:36  NEW MOON 
    31  10:27  Jupiter 5.1°N of Aldebaran
    31  18:46  Saturn 1.1°S of Moon: Occn.

Feb 01  10:27  Venus 2.3°N of Moon
    01  12:06  Moon at Ascending Node 
    01  16:43  Moon at Perigee: 367457 km
    04  22:02  FIRST QUARTER MOON 
    05  20:43  Pleiades 0.5°S of Moon
    06  17:35  Jupiter 5.5°S of Moon
    09  02     Mercury at Superior Conjunction 
    09  09:36  Mars 0.8°S of Moon: Occn.
    09  19:19  Pollux 2.1°N of Moon
    10  19:03  Beehive 2.6°S of Moon
    12  03:53  FULL MOON 
    12  13:21  Regulus 2.2°S of Moon
    14  20:53  Moon at Descending Node 
    17  02:01  Spica 0.3°N of Moon
    17  15:11  Moon at Apogee: 404882 km
    19  08     Venus at Perihelion 
    20  07:33  LAST QUARTER MOON 
    20  22:21  Antares 0.4°N of Moon
    24  23     Mercury 1.4° of Saturn
    27  14:45  NEW MOON 
    28  18:03  Mercury 0.4°N of Moon: Occn.
    28  19:40  Moon at Ascending Node 

Mar 01  11:18  Moon at Perigee: 361967 km
    04  04     Mercury at Perihelion 
    05  02:32  Pleiades 0.6°S of Moon
    06  01:31  Jupiter 5.6°S of Moon
    06  06:32  FIRST QUARTER MOON 
    07  20     Mercury at Greatest Elong: 18.2°E
    08  14:27  Mars 1.7°S of Moon
    09  01:06  Pollux 2.0°N of Moon
    10  01:10  Beehive 2.6°S of Moon
    11  20:07  Regulus 2.2°S of Moon
    12  00     Saturn in Conjunction with Sun 
    12  08     Mercury 5.5° of Venus
    13  20:55  FULL MOON 
    13  20:59  Total Lunar Eclipse; mag=1.178
    14  03:45  Moon at Descending Node 
    16  09:16  Spica 0.3°N of Moon
    17  06:37  Moon at Apogee: 405754 km
    19  12     Neptune in Conjunction with Sun 
    19  23:02  Vernal Equinox 
    20  05:58  Antares 0.5°N of Moon
    22  01:30  LAST QUARTER MOON 
    22  15     Venus at Inferior Conjunction 
    24  10     Mercury at Inferior Conjunction 
    28  06:29  Moon at Ascending Node 
    29  00:47  Partial Solar Eclipse; mag=0.938
    29  00:58  NEW MOON 
    29  09:29  Mars 3.9°S of Pollux
    29  19:26  Moon at Perigee: 358127 km

Apr 01  10:28  Pleiades 0.6°S of Moon
    02  14:24  Jupiter 5.5°S of Moon
    04  16:15  FIRST QUARTER MOON 
    05  06:46  Pollux 2.0°N of Moon
    05  09:04  Mars 2.2°S of Moon
    06  06:44  Beehive 2.6°S of Moon
    08  01:51  Regulus 2.2°S of Moon
    10  02     Mercury 2.1° of Saturn
    10  09:56  Moon at Descending Node 
    12  14:22  FULL MOON 
    12  15:39  Spica 0.3°N of Moon
    13  12:48  Moon at Apogee: 406295 km
    16  12:19  Antares 0.4°N of Moon
    16  13     Mars at Aphelion 
    20  15:36  LAST QUARTER MOON 
    21  09     Mercury at Greatest Elong: 27.4°W
    22  03     Lyrid Meteor Shower
    24  15:21  Venus 2.4°N of Moon
    24  16:23  Moon at Ascending Node 
    24  18:15  Saturn 2.3°S of Moon
    25  15:05  Mercury 4.4°S of Moon
    27  06:15  Moon at Perigee: 357119 km
    27  09:31  NEW MOON 
    28  20:35  Pleiades 0.5°S of Moon
    30  07:34  Jupiter 5.4°S of Moon

May 02  14:02  Pollux 2.1°N of Moon
    03  13:12  Mars 2.1°S of Moon
    03  13:27  Beehive 2.5°S of Moon
    04  02:03  Mars 0.3°N of Beehive
    04  03:52  FIRST QUARTER MOON 
    04  16     Eta-Aquarid Meteor Shower
    05  07:58  Regulus 2.0°S of Moon
    07  13:44  Moon at Descending Node 
    09  21:43  Spica 0.4°N of Moon
    10  14:49  Moon at Apogee: 406245 km
    12  06:56  FULL MOON 
    13  18:10  Antares 0.3°N of Moon
    17  15     Uranus in Conjunction with Sun 
    20  01:59  LAST QUARTER MOON 
    21  22:05  Moon at Ascending Node 
    22  07:51  Saturn 2.8°S of Moon
    23  13:52  Venus 4.0°S of Moon
    25  15:37  Moon at Perigee: 359023 km
    26  17:02  NEW MOON 
    29  18     Mercury at Superior Conjunction 
    29  23:13  Pollux 2.3°N of Moon
    30  22:00  Beehive 2.2°S of Moon
    31  03     Mercury at Perihelion 
    31  16     Venus at Greatest Elong: 45.9°W
    31  23:49  Mars 1.4°S of Moon

Jun 01  15:30  Regulus 1.8°S of Moon
    02  17:41  FIRST QUARTER MOON 
    03  15:33  Moon at Descending Node 
    06  04:15  Spica 0.5°N of Moon
    07  00:42  Moon at Apogee: 405553 km
    10  00:25  Antares 0.3°N of Moon
    10  21:44  FULL MOON 
    11  17     Venus at Aphelion 
    16  16:05  Mars 0.7°N of Regulus
    17  23:41  Moon at Ascending Node 
    18  09:19  LAST QUARTER MOON 
    18  17:47  Saturn 3.4°S of Moon
    20  16:42  Summer Solstice 
    21  09:51  Mercury 4.8°S of Pollux
    22  16:59  Pleiades 0.6°S of Moon
    22  18:43  Moon at Perigee: 363178 km
    24  05     Jupiter in Conjunction with Sun 
    25  00:31  NEW MOON 
    26  20:02  Mercury 2.9°S of Moon
    27  07:42  Beehive 2.0°S of Moon
    29  00:26  Regulus 1.5°S of Moon
    29  15:05  Mars 0.2°S of Moon: Occn.
    30  17:46  Moon at Descending Node 

Date     HST   Event
        (h:m)

Jul 02  07:36  Mercury 1.2°S of Beehive
    02  09:30  FIRST QUARTER MOON 
    03  11     Earth at Aphelion: 1.01664 AU
    03  11:39  Spica 0.8°N of Moon
    03  18     Mercury at Greatest Elong: 25.9°E
    04  05:44  Venus 6.5°S of Pleiades
    04  16:29  Moon at Apogee: 404627 km
    07  07:37  Antares 0.4°N of Moon
    10  10:37  FULL MOON 
    12  22:32  Venus 3.1°N of Aldebaran
    14  03     Mercury at Aphelion 
    15  00:42  Moon at Ascending Node 
    16  00:19  Saturn 3.8°S of Moon
    17  14:38  LAST QUARTER MOON 
    20  00:27  Pleiades 0.7°S of Moon
    20  03:52  Moon at Perigee: 368047 km
    22  18:20  Jupiter 4.9°S of Moon
    24  09:11  NEW MOON 
    26  09:44  Regulus 1.4°S of Moon
    27  18     Delta-Aquarid Meteor Shower
    27  22:30  Moon at Descending Node 
    28  09:45  Mars 1.3°N of Moon
    30  19:45  Spica 1.0°N of Moon
    31  14     Mercury at Inferior Conjunction 

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

Sep 07  08:09  FULL MOON 
    07  08:12  Total Lunar Eclipse; mag=1.362
    07  13:08  Moon at Ascending Node 
    08  10:09  Saturn 4.0°S of Moon
    10  02:09  Moon at Perigee: 364781 km
    12  11:48  Pleiades 1.0°S of Moon
    12  17:28  Mars 2.0°N of Spica
    13  01     Mercury at Superior Conjunction 
    14  00:33  LAST QUARTER MOON 
    16  01:06  Jupiter 4.6°S of Moon
    16  07:58  Pollux 2.4°N of Moon
    17  07:24  Beehive 2.0°S of Moon
    18  22:57  Venus 0.4°N of Regulus
    19  01:11  Regulus 1.3°S of Moon
    19  01:46  Venus 0.8°S of Moon: Occn.
    20  13:13  Moon at Descending Node 
    20  19     Saturn at Opposition 
    21  09:42  Partial Solar Eclipse; mag=0.855
    21  09:54  NEW MOON 
    22  08:20  Autumnal Equinox 
    23  01     Neptune at Opposition 
    23  11:31  Spica 1.1°N of Moon
    24  04:50  Mars 3.9°N of Moon
    25  23:46  Moon at Apogee: 405552 km
    27  07:34  Antares 0.6°N of Moon
    29  13:54  FIRST QUARTER MOON 

Oct 02  01     Venus at Perihelion 
    04  23:20  Moon at Ascending Node 
    05  16:46  Saturn 3.8°S of Moon
    06  17:47  FULL MOON 
    08  02:36  Moon at Perigee: 359819 km
    08  11:17  Jupiter 6.6°S of Pollux
    09  19:20  Pleiades 0.9°S of Moon
    13  08:13  LAST QUARTER MOON 
    13  12:31  Jupiter 4.3°S of Moon
    13  13:31  Pollux 2.5°N of Moon
    14  12:53  Beehive 1.9°S of Moon
    16  06:56  Regulus 1.3°S of Moon
    17  18:34  Moon at Descending Node 
    19  10     Mercury 2.0° of Mars
    19  11:37  Venus 3.7°N of Moon
    21  02     Orionid Meteor Shower
    21  02:25  NEW MOON 
    23  06:15  Mercury 2.3°N of Moon
    23  13:31  Moon at Apogee: 406445 km
    24  14:15  Antares 0.5°N of Moon
    29  06:21  FIRST QUARTER MOON 
    29  12     Mercury at Greatest Elong: 23.9°E

Nov 01  07:46  Moon at Ascending Node 
    01  15:02  Venus 3.3°N of Spica
    02  00:46  Saturn 3.7°S of Moon
    05  03     S Taurid Meteor Shower
    05  03:19  FULL MOON 
    05  12:29  Moon at Perigee: 356833 km
    06  05:26  Pleiades 0.8°S of Moon
    08  16:41  Mercury 2.6°N of Antares
    09  20:40  Pollux 2.7°N of Moon
    09  21:56  Jupiter 4.0°S of Moon
    10  19:27  Beehive 1.7°S of Moon
    11  19:28  LAST QUARTER MOON 
    12  02     N Taurid Meteor Shower
    12  12:51  Regulus 1.1°S of Moon
    12  18     Mercury 1.2° of Mars
    13  20:38  Moon at Descending Node 
    17  00:11  Spica 1.2°N of Moon
    17  08     Leonid Meteor Shower
    19  16:48  Moon at Apogee: 406693 km
    19  20:47  NEW MOON 
    19  23     Mercury at Inferior Conjunction 
    21  03     Uranus at Opposition 
    23  01     Mercury at Perihelion 
    27  20:59  FIRST QUARTER MOON 
    28  11:33  Moon at Ascending Node 
    29  09:08  Saturn 3.7°S of Moon

Dec 03  16:54  Pleiades 0.8°S of Moon
    04  01:06  Moon at Perigee: 356962 km
    04  13:14  FULL MOON 
    07  05:48  Jupiter 3.7°S of Moon
    07  06:21  Pollux 2.9°N of Moon
    07  11     Mercury at Greatest Elong: 20.7°W
    08  04:23  Beehive 1.5°S of Moon
    09  20:32  Regulus 0.8°S of Moon
    10  21:35  Moon at Descending Node 
    11  10:52  LAST QUARTER MOON 
    13  21     Geminid Meteor Shower
    14  06:27  Spica 1.4°N of Moon
    16  20:09  Moon at Apogee: 406324 km
    17  14:19  Jupiter 6.4°S of Pollux
    19  04:05  Mercury 5.4°N of Antares
    19  15:43  NEW MOON 
    21  05:03  Winter Solstice 
    22  06     Ursid Meteor Shower
    25  12:03  Moon at Ascending Node 
    26  17:24  Saturn 4.0°S of Moon
    27  09:10  FIRST QUARTER MOON 
    31  03:21  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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