2020 Calendar of Astronomical Events




    


2020 Phases of the Moon

Greenwich Mean 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.

2020 Phases of the Moon
Greenwich Mean Time
New Moon First Quarter Full Moon Last Quarter
- Jan 3 04:45 Jan 10 19:21 n Jan 17 12:58
Jan 24 21:42 Feb 2 01:42 Feb 9 07:33 Feb 15 22:17
Feb 23 15:32 Mar 2 19:57 Mar 9 17:48 Mar 16 09:34
Mar 24 09:28 Apr 1 10:21 Apr 8 02:35 Apr 14 22:56
Apr 23 02:26 Apr 30 20:38 May 7 10:45 May 14 14:03
May 22 17:39 May 30 03:30 Jun 5 19:12 n Jun 13 06:24
Jun 21 06:41 A Jun 28 08:16 Jul 5 04:44 n Jul 12 23:29
Jul 20 17:33 Jul 27 12:32 Aug 3 15:59 Aug 11 16:45
Aug 19 02:41 Aug 25 17:58 Sep 2 05:22 Sep 10 09:26
Sep 17 11:00 Sep 24 01:55 Oct 1 21:05 Oct 10 00:39
Oct 16 19:31 Oct 23 13:23 Oct 31 14:49 Nov 8 13:46
Nov 15 05:07 Nov 22 04:45 Nov 30 09:30 n Dec 8 00:37
Dec 14 16:17 T Dec 21 23:41 Dec 30 03:28 -

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.



2020 Calendar of Astronomical Events

Greenwich Mean 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.

2020 Calendar of Astronomical Events
January - June July - December
Date     GMT   Event
        (h:m)

Jan 02  01:30  Moon at Apogee: 404580 km
    03  04:45  FIRST QUARTER MOON 
    04  09     Quadrantid Meteor Shower
    05  08     Earth at Perihelion: 0.98324 AU
    07  21:09  Aldebaran 3.0°S of Moon
    09  23:29  Moon at Ascending Node 
    10  15     Mercury at Superior Conjunction 
    10  19:10  Pen. Lunar Eclipse; mag=0.896
    10  19:21  FULL MOON 
    11  02:26  Pollux 5.3°N of Moon
    11  23:54  Beehive 1.0°S of Moon
    13  11:37  Regulus 3.8°S of Moon
    13  14     Saturn in Conjunction with Sun 
    13  20:20  Moon at Perigee: 365964 km
    17  12:58  LAST QUARTER MOON 
    17  23:03  Mars 4.7°N of Antares
    20  19:13  Mars 2.3°S of Moon
    22  20:31  Moon at Descending Node 
    23  02:42  Jupiter 0.4°N of Moon: Occn.
    24  21:42  NEW MOON 
    28  07:29  Venus 4.1°N of Moon
    29  21:28  Moon at Apogee: 405390 km

Feb 02  01:42  FIRST QUARTER MOON 
    04  06:53  Aldebaran 3.1°S of Moon
    06  08:59  Moon at Ascending Node 
    07  12:58  Pollux 5.3°N of Moon
    08  10:16  Beehive 1.0°S of Moon
    09  07:33  FULL MOON 
    09  21:15  Regulus 3.8°S of Moon
    10  14     Mercury at Greatest Elong: 18.2°E
    10  20:31  Moon at Perigee: 360464 km
    12  05     Mercury at Perihelion 
    15  22:17  LAST QUARTER MOON 
    18  13:18  Mars 0.8°S of Moon: Occn.
    19  00:12  Moon at Descending Node 
    19  19:36  Jupiter 0.9°N of Moon: Occn.
    20  13:47  Saturn 1.7°N of Moon
    23  15:32  NEW MOON 
    26  02     Mercury at Inferior Conjunction 
    26  11:35  Moon at Apogee: 406277 km

Mar 02  15:16  Aldebaran 3.3°S of Moon
    02  19:57  FIRST QUARTER MOON 
    04  14:58  Moon at Ascending Node 
    05  23:26  Pollux 5.2°N of Moon
    06  21:08  Beehive 1.1°S of Moon
    08  08:23  Regulus 3.8°S of Moon
    08  12     Neptune in Conjunction with Sun 
    09  17:48  FULL MOON 
    10  06:33  Moon at Perigee: 357123 km
    16  09:34  LAST QUARTER MOON 
    17  01:00  Moon at Descending Node 
    18  08:19  Mars 0.7°N of Moon: Occn.
    18  10:18  Jupiter 1.5°N of Moon
    19  00:04  Saturn 2.1°N of Moon
    20  03:50  Vernal Equinox 
    20  04     Venus at Perihelion 
    21  17:48  Mercury 3.6°N of Moon
    24  02     Mercury at Greatest Elong: 27.8°W
    24  09:28  NEW MOON 
    24  15:23  Moon at Apogee: 406690 km
    24  22     Venus at Greatest Elong: 46.1°E
    27  05     Mercury at Aphelion 
    29  21:52  Aldebaran 3.6°S of Moon
    31  16:51  Moon at Ascending Node 

Apr 01  10:21  FIRST QUARTER MOON 
    02  07:59  Pollux 4.9°N of Moon
    03  06:25  Beehive 1.3°S of Moon
    03  14:36  Venus 0.3°S of Pleiades
    04  18:45  Regulus 3.9°S of Moon
    07  18:08  Moon at Perigee: 356909 km
    08  02:35  FULL MOON 
    13  02:58  Moon at Descending Node 
    14  22:56  LAST QUARTER MOON 
    14  23:04  Jupiter 2.0°N of Moon
    15  09:26  Saturn 2.5°N of Moon
    16  04:33  Mars 2.0°N of Moon
    20  19:01  Moon at Apogee: 406463 km
    22  06     Lyrid Meteor Shower
    23  02:26  NEW MOON 
    26  03:34  Aldebaran 3.8°S of Moon
    26  10     Uranus in Conjunction with Sun 
    27  17:54  Moon at Ascending Node 
    29  14:19  Pollux 4.7°N of Moon
    30  13:18  Beehive 1.6°S of Moon
    30  20:38  FIRST QUARTER MOON 

May 02  02:49  Regulus 4.2°S of Moon
    04  19     Eta-Aquarid Meteor Shower
    04  21     Mercury at Superior Conjunction 
    06  03:03  Moon at Perigee: 359656 km
    07  10:45  FULL MOON 
    08  21:40  Antares 6.5°S of Moon
    10  04     Mercury at Perihelion 
    10  09:01  Moon at Descending Node 
    12  09:40  Jupiter 2.3°N of Moon
    12  18:18  Saturn 2.7°N of Moon
    14  14:03  LAST QUARTER MOON 
    15  02:00  Mars 2.8°N of Moon
    18  07:45  Moon at Apogee: 405584 km
    22  10     Mercury 0.9° of Venus
    22  17:39  NEW MOON 
    24  02:40  Venus 3.7°N of Moon
    24  10:53  Mercury 2.8°N of Moon
    24  21:34  Moon at Ascending Node 
    26  19:43  Pollux 4.6°N of Moon
    27  18:44  Beehive 1.7°S of Moon
    29  08:44  Regulus 4.3°S of Moon
    30  03:30  FIRST QUARTER MOON 

Jun 03  03:36  Moon at Perigee: 364366 km
    03  18     Venus at Inferior Conjunction 
    04  13     Mercury at Greatest Elong: 23.6°E
    05  19:12  FULL MOON 
    05  19:25  Pen. Lunar Eclipse; mag=0.568
    06  18:10  Moon at Descending Node 
    08  17:19  Jupiter 2.2°N of Moon
    09  02:19  Saturn 2.7°N of Moon
    12  23:53  Mars 2.7°N of Moon
    13  06:24  LAST QUARTER MOON 
    15  00:56  Moon at Apogee: 404597 km
    19  08:52  Venus 0.7°S of Moon: Occn.
    20  21:43  Summer Solstice 
    21  04:24  Moon at Ascending Node 
    21  06:40  Annular Solar Eclipse; mag=0.994
    21  06:41  NEW MOON 
    23  01:53  Pollux 4.5°N of Moon
    24  00:33  Beehive 1.7°S of Moon
    25  14:09  Regulus 4.3°S of Moon
    28  08:16  FIRST QUARTER MOON 
    30  02:09  Moon at Perigee: 368958 km

Date     GMT   Event
        (h:m)

Jul 01  03     Mercury at Inferior Conjunction 
    04  03:18  Moon at Descending Node 
    04  13     Earth at Aphelion: 1.01669 AU
    05  04:30  Pen. Lunar Eclipse; mag=0.355
    05  04:44  FULL MOON 
    05  21:37  Jupiter 1.9°N of Moon
    06  08:45  Saturn 2.5°N of Moon
    10  12     Venus at Aphelion 
    11  12:10  Venus 1.0°N of Aldebaran
    11  19:36  Mars 2.0°N of Moon
    12  19:27  Moon at Apogee: 404201 km
    12  23:29  LAST QUARTER MOON 
    14  07     Jupiter at Opposition 
    17  01:21  Aldebaran 3.8°S of Moon
    17  07:26  Venus 3.1°S of Moon
    18  12:33  Moon at Ascending Node 
    19  03:54  Mercury 3.9°S of Moon
    20  17:33  NEW MOON 
    20  22     Saturn at Opposition 
    22  15     Mercury at Greatest Elong: 20.1°W
    22  20:50  Regulus 4.3°S of Moon
    25  04:54  Moon at Perigee: 368367 km
    27  12:32  FIRST QUARTER MOON 
    27  21     Delta-Aquarid Meteor Shower
    31  09:32  Moon at Descending Node 

Aug 01  20:14  Mercury 6.6°S of Pollux
    01  23:30  Jupiter 1.5°N of Moon
    02  13:17  Saturn 2.3°N of Moon
    03  12     Mars at Perihelion 
    03  15:59  FULL MOON 
    06  04     Mercury at Perihelion 
    09  07:57  Mars 0.8°N of Moon: Occn.
    09  13:51  Moon at Apogee: 404658 km
    11  16:45  LAST QUARTER MOON 
    12  13     Perseid Meteor Shower
    13  01     Venus at Greatest Elong: 45.8°W
    13  10:06  Aldebaran 4.0°S of Moon
    14  19:22  Moon at Ascending Node 
    15  13:01  Venus 4.0°S of Moon
    16  19:10  Pollux 4.5°N of Moon
    17  15     Mercury at Superior Conjunction 
    19  02:41  NEW MOON 
    21  10:59  Moon at Perigee: 363513 km
    25  17:58  FIRST QUARTER MOON 
    26  04:04  Antares 6.2°S of Moon
    27  11:52  Moon at Descending Node 
    29  01:33  Jupiter 1.4°N of Moon
    29  16:40  Saturn 2.2°N of Moon

Sep 02  05:22  FULL MOON 
    06  04:42  Mars 0.0°S of Moon: Occn.
    06  06:31  Moon at Apogee: 405606 km
    09  18:12  Aldebaran 4.2°S of Moon
    10  09:26  LAST QUARTER MOON 
    10  23:05  Moon at Ascending Node 
    11  19     Neptune at Opposition 
    13  00:10  Venus 2.5°S of Beehive
    13  04:50  Pollux 4.3°N of Moon
    14  03:19  Beehive 1.8°S of Moon
    14  04:43  Venus 4.5°S of Moon
    15  15:51  Regulus 4.3°S of Moon
    17  11:00  NEW MOON 
    18  13:44  Moon at Perigee: 359081 km
    19  03     Mercury at Aphelion 
    22  06:06  Mercury 0.3°N of Spica
    22  10:27  Antares 6.0°S of Moon
    22  13:31  Autumnal Equinox 
    23  12:33  Moon at Descending Node 
    24  01:55  FIRST QUARTER MOON 
    25  06:46  Jupiter 1.6°N of Moon
    25  20:46  Saturn 2.3°N of Moon

Oct 01  16     Mercury at Greatest Elong: 25.8°E
    01  21:05  FULL MOON 
    02  17:09  Venus 0.1°S of Regulus
    03  03:21  Mars 0.7°N of Moon: Occn.
    03  17:22  Moon at Apogee: 406321 km
    07  01:02  Aldebaran 4.5°S of Moon
    08  00:29  Moon at Ascending Node 
    10  00:39  LAST QUARTER MOON 
    10  13:18  Pollux 4.1°N of Moon
    11  12:27  Beehive 2.1°S of Moon
    13  01:59  Regulus 4.5°S of Moon
    13  23     Mars at Opposition 
    13  23:57  Venus 4.3°S of Moon
    16  19:31  NEW MOON 
    16  23:46  Moon at Perigee: 356913 km
    19  19:12  Antares 5.7°S of Moon
    20  15:53  Moon at Descending Node 
    21  05     Orionid Meteor Shower
    22  17:10  Jupiter 2.0°N of Moon
    23  03:49  Saturn 2.6°N of Moon
    23  13:23  FIRST QUARTER MOON 
    25  18     Mercury at Inferior Conjunction 
    29  16:13  Mars 3.0°N of Moon
    30  18:46  Moon at Apogee: 406393 km
    30  21     Venus at Perihelion 
    31  14:49  FULL MOON 
    31  16     Uranus at Opposition 

Nov 02  03     Mercury at Perihelion 
    03  06:58  Aldebaran 4.6°S of Moon
    04  02:39  Moon at Ascending Node 
    05  06     S Taurid Meteor Shower
    06  19:52  Pollux 3.9°N of Moon
    07  19:34  Beehive 2.3°S of Moon
    08  13:46  LAST QUARTER MOON 
    09  10:20  Regulus 4.7°S of Moon
    10  17     Mercury at Greatest Elong: 19.1°W
    12  05     N Taurid Meteor Shower
    12  21:30  Venus 3.1°S of Moon
    13  20:45  Mercury 1.7°S of Moon
    14  11:48  Moon at Perigee: 357839 km
    15  05:07  NEW MOON 
    16  13:27  Venus 3.6°N of Spica
    17  00:07  Moon at Descending Node 
    17  11     Leonid Meteor Shower
    19  08:54  Jupiter 2.5°N of Moon
    19  14:57  Saturn 2.9°N of Moon
    22  04:45  FIRST QUARTER MOON 
    25  19:45  Mars 4.9°N of Moon
    27  00:29  Moon at Apogee: 405891 km
    30  09:30  FULL MOON 
    30  09:43  Pen. Lunar Eclipse; mag=0.829
    30  13:07  Aldebaran 4.6°S of Moon

Dec 01  07:46  Moon at Ascending Node 
    04  01:24  Pollux 3.8°N of Moon
    05  01:10  Beehive 2.4°S of Moon
    06  16:28  Regulus 4.8°S of Moon
    08  00:37  LAST QUARTER MOON 
    12  20:40  Venus 0.8°S of Moon: Occn.
    12  20:42  Moon at Perigee: 361777 km
    14  01     Geminid Meteor Shower
    14  11:03  Moon at Descending Node 
    14  16:13  Total Solar Eclipse; mag=1.025
    14  16:17  NEW MOON 
    17  04:28  Jupiter 2.9°N of Moon
    17  05:25  Saturn 3.1°N of Moon
    20  03     Mercury at Superior Conjunction 
    21  10:03  Winter Solstice 
    21  23:41  FIRST QUARTER MOON 
    22  09     Ursid Meteor Shower
    23  14:48  Venus 5.5°N of Antares
    23  18:30  Mars 5.6°N of Moon
    24  16:32  Moon at Apogee: 405010 km
    27  20:20  Aldebaran 4.6°S of Moon
    28  15:03  Moon at Ascending Node 
    30  03:28  FULL MOON 
    31  07:41  Pollux 3.8°N 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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