2020 Calendar of Astronomical Events




    


2020 Phases of the Moon

Eastern 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.

2020 Phases of the Moon
Eastern Standard Time
New Moon First Quarter Full Moon Last Quarter
- Jan 2 23:45 Jan 10 14:21 n Jan 17 07:58
Jan 24 16:42 Feb 1 20:42 Feb 9 02:33 Feb 15 17:17
Feb 23 10:32 Mar 2 14:57 Mar 9 12:48 Mar 16 04:34
Mar 24 04:28 Apr 1 05:21 Apr 7 21:35 Apr 14 17:56
Apr 22 21:26 Apr 30 15:38 May 7 05:45 May 14 09:03
May 22 12:39 May 29 22:30 Jun 5 14:12 n Jun 13 01:24
Jun 21 01:41 A Jun 28 03:16 Jul 4 23:44 n Jul 12 18:29
Jul 20 12:33 Jul 27 07:32 Aug 3 10:59 Aug 11 11:45
Aug 18 21:41 Aug 25 12:58 Sep 2 00:22 Sep 10 04:26
Sep 17 06:00 Sep 23 20:55 Oct 1 16:05 Oct 9 19:39
Oct 16 14:31 Oct 23 08:23 Oct 31 09:49 Nov 8 08:46
Nov 15 00:07 Nov 21 23:45 Nov 30 04:30 n Dec 7 19:37
Dec 14 11:17 T Dec 21 18:41 Dec 29 22:28 -

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

Eastern 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.

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

Jan 01  20:30  Moon at Apogee: 404580 km
    02  23:45  FIRST QUARTER MOON 
    04  04     Quadrantid Meteor Shower
    05  03     Earth at Perihelion: 0.98324 AU
    07  16:09  Aldebaran 3.0°S of Moon
    09  18:29  Moon at Ascending Node 
    10  10     Mercury at Superior Conjunction 
    10  14:10  Pen. Lunar Eclipse; mag=0.896
    10  14:21  FULL MOON 
    10  21:26  Pollux 5.3°N of Moon
    11  18:54  Beehive 1.0°S of Moon
    13  06:37  Regulus 3.8°S of Moon
    13  09     Saturn in Conjunction with Sun 
    13  15:20  Moon at Perigee: 365964 km
    17  07:58  LAST QUARTER MOON 
    17  18:03  Mars 4.7°N of Antares
    20  14:13  Mars 2.3°S of Moon
    22  15:31  Moon at Descending Node 
    22  21:42  Jupiter 0.4°N of Moon: Occn.
    24  16:42  NEW MOON 
    28  02:29  Venus 4.1°N of Moon
    29  16:28  Moon at Apogee: 405390 km

Feb 01  20:42  FIRST QUARTER MOON 
    04  01:53  Aldebaran 3.1°S of Moon
    06  03:59  Moon at Ascending Node 
    07  07:58  Pollux 5.3°N of Moon
    08  05:16  Beehive 1.0°S of Moon
    09  02:33  FULL MOON 
    09  16:15  Regulus 3.8°S of Moon
    10  09     Mercury at Greatest Elong: 18.2°E
    10  15:31  Moon at Perigee: 360464 km
    12  00     Mercury at Perihelion 
    15  17:17  LAST QUARTER MOON 
    18  08:18  Mars 0.8°S of Moon: Occn.
    18  19:12  Moon at Descending Node 
    19  14:36  Jupiter 0.9°N of Moon: Occn.
    20  08:47  Saturn 1.7°N of Moon
    23  10:32  NEW MOON 
    25  21     Mercury at Inferior Conjunction 
    26  06:35  Moon at Apogee: 406277 km

Mar 02  10:16  Aldebaran 3.3°S of Moon
    02  14:57  FIRST QUARTER MOON 
    04  09:58  Moon at Ascending Node 
    05  18:26  Pollux 5.2°N of Moon
    06  16:08  Beehive 1.1°S of Moon
    08  03:23  Regulus 3.8°S of Moon
    08  07     Neptune in Conjunction with Sun 
    09  12:48  FULL MOON 
    10  01:33  Moon at Perigee: 357123 km
    16  04:34  LAST QUARTER MOON 
    16  20:00  Moon at Descending Node 
    18  03:19  Mars 0.7°N of Moon: Occn.
    18  05:18  Jupiter 1.5°N of Moon
    18  19:04  Saturn 2.1°N of Moon
    19  22:50  Vernal Equinox 
    19  23     Venus at Perihelion 
    21  12:48  Mercury 3.6°N of Moon
    23  21     Mercury at Greatest Elong: 27.8°W
    24  04:28  NEW MOON 
    24  10:23  Moon at Apogee: 406690 km
    24  17     Venus at Greatest Elong: 46.1°E
    27  00     Mercury at Aphelion 
    29  16:52  Aldebaran 3.6°S of Moon
    31  11:51  Moon at Ascending Node 

Apr 01  05:21  FIRST QUARTER MOON 
    02  02:59  Pollux 4.9°N of Moon
    03  01:25  Beehive 1.3°S of Moon
    03  09:36  Venus 0.3°S of Pleiades
    04  13:45  Regulus 3.9°S of Moon
    07  13:08  Moon at Perigee: 356909 km
    07  21:35  FULL MOON 
    12  21:58  Moon at Descending Node 
    14  17:56  LAST QUARTER MOON 
    14  18:04  Jupiter 2.0°N of Moon
    15  04:26  Saturn 2.5°N of Moon
    15  23:33  Mars 2.0°N of Moon
    20  14:01  Moon at Apogee: 406463 km
    22  01     Lyrid Meteor Shower
    22  21:26  NEW MOON 
    25  22:34  Aldebaran 3.8°S of Moon
    26  05     Uranus in Conjunction with Sun 
    27  12:54  Moon at Ascending Node 
    29  09:19  Pollux 4.7°N of Moon
    30  08:18  Beehive 1.6°S of Moon
    30  15:38  FIRST QUARTER MOON 

May 01  21:49  Regulus 4.2°S of Moon
    04  14     Eta-Aquarid Meteor Shower
    04  16     Mercury at Superior Conjunction 
    05  22:03  Moon at Perigee: 359656 km
    07  05:45  FULL MOON 
    08  16:40  Antares 6.5°S of Moon
    09  23     Mercury at Perihelion 
    10  04:01  Moon at Descending Node 
    12  04:40  Jupiter 2.3°N of Moon
    12  13:18  Saturn 2.7°N of Moon
    14  09:03  LAST QUARTER MOON 
    14  21:00  Mars 2.8°N of Moon
    18  02:45  Moon at Apogee: 405584 km
    22  05     Mercury 0.9° of Venus
    22  12:39  NEW MOON 
    23  21:40  Venus 3.7°N of Moon
    24  05:53  Mercury 2.8°N of Moon
    24  16:34  Moon at Ascending Node 
    26  14:43  Pollux 4.6°N of Moon
    27  13:44  Beehive 1.7°S of Moon
    29  03:44  Regulus 4.3°S of Moon
    29  22:30  FIRST QUARTER MOON 

Jun 02  22:36  Moon at Perigee: 364366 km
    03  13     Venus at Inferior Conjunction 
    04  08     Mercury at Greatest Elong: 23.6°E
    05  14:12  FULL MOON 
    05  14:25  Pen. Lunar Eclipse; mag=0.568
    06  13:10  Moon at Descending Node 
    08  12:19  Jupiter 2.2°N of Moon
    08  21:19  Saturn 2.7°N of Moon
    12  18:53  Mars 2.7°N of Moon
    13  01:24  LAST QUARTER MOON 
    14  19:56  Moon at Apogee: 404597 km
    19  03:52  Venus 0.7°S of Moon: Occn.
    20  16:43  Summer Solstice 
    20  23:24  Moon at Ascending Node 
    21  01:40  Annular Solar Eclipse; mag=0.994
    21  01:41  NEW MOON 
    22  20:53  Pollux 4.5°N of Moon
    23  19:33  Beehive 1.7°S of Moon
    25  09:09  Regulus 4.3°S of Moon
    28  03:16  FIRST QUARTER MOON 
    29  21:09  Moon at Perigee: 368958 km
    30  22     Mercury at Inferior Conjunction 

Date     EST   Event
        (h:m)

Jul 03  22:18  Moon at Descending Node 
    04  08     Earth at Aphelion: 1.01669 AU
    04  23:30  Pen. Lunar Eclipse; mag=0.355
    04  23:44  FULL MOON 
    05  16:37  Jupiter 1.9°N of Moon
    06  03:45  Saturn 2.5°N of Moon
    10  07     Venus at Aphelion 
    11  07:10  Venus 1.0°N of Aldebaran
    11  14:36  Mars 2.0°N of Moon
    12  14:27  Moon at Apogee: 404201 km
    12  18:29  LAST QUARTER MOON 
    14  02     Jupiter at Opposition 
    16  20:21  Aldebaran 3.8°S of Moon
    17  02:26  Venus 3.1°S of Moon
    18  07:33  Moon at Ascending Node 
    18  22:54  Mercury 3.9°S of Moon
    20  12:33  NEW MOON 
    20  17     Saturn at Opposition 
    22  10     Mercury at Greatest Elong: 20.1°W
    22  15:50  Regulus 4.3°S of Moon
    24  23:54  Moon at Perigee: 368367 km
    27  07:32  FIRST QUARTER MOON 
    27  16     Delta-Aquarid Meteor Shower
    31  04:32  Moon at Descending Node 

Aug 01  15:14  Mercury 6.6°S of Pollux
    01  18:30  Jupiter 1.5°N of Moon
    02  08:17  Saturn 2.3°N of Moon
    03  07     Mars at Perihelion 
    03  10:59  FULL MOON 
    05  23     Mercury at Perihelion 
    09  02:57  Mars 0.8°N of Moon: Occn.
    09  08:51  Moon at Apogee: 404658 km
    11  11:45  LAST QUARTER MOON 
    12  08     Perseid Meteor Shower
    12  20     Venus at Greatest Elong: 45.8°W
    13  05:06  Aldebaran 4.0°S of Moon
    14  14:22  Moon at Ascending Node 
    15  08:01  Venus 4.0°S of Moon
    16  14:10  Pollux 4.5°N of Moon
    17  10     Mercury at Superior Conjunction 
    18  21:41  NEW MOON 
    21  05:59  Moon at Perigee: 363513 km
    25  12:58  FIRST QUARTER MOON 
    25  23:04  Antares 6.2°S of Moon
    27  06:52  Moon at Descending Node 
    28  20:33  Jupiter 1.4°N of Moon
    29  11:40  Saturn 2.2°N of Moon

Sep 02  00:22  FULL MOON 
    05  23:42  Mars 0.0°S of Moon: Occn.
    06  01:31  Moon at Apogee: 405606 km
    09  13:12  Aldebaran 4.2°S of Moon
    10  04:26  LAST QUARTER MOON 
    10  18:05  Moon at Ascending Node 
    11  14     Neptune at Opposition 
    12  19:10  Venus 2.5°S of Beehive
    12  23:50  Pollux 4.3°N of Moon
    13  22:19  Beehive 1.8°S of Moon
    13  23:43  Venus 4.5°S of Moon
    15  10:51  Regulus 4.3°S of Moon
    17  06:00  NEW MOON 
    18  08:44  Moon at Perigee: 359081 km
    18  22     Mercury at Aphelion 
    22  01:06  Mercury 0.3°N of Spica
    22  05:27  Antares 6.0°S of Moon
    22  08:31  Autumnal Equinox 
    23  07:33  Moon at Descending Node 
    23  20:55  FIRST QUARTER MOON 
    25  01:46  Jupiter 1.6°N of Moon
    25  15:46  Saturn 2.3°N of Moon

Oct 01  11     Mercury at Greatest Elong: 25.8°E
    01  16:05  FULL MOON 
    02  12:09  Venus 0.1°S of Regulus
    02  22:21  Mars 0.7°N of Moon: Occn.
    03  12:22  Moon at Apogee: 406321 km
    06  20:02  Aldebaran 4.5°S of Moon
    07  19:29  Moon at Ascending Node 
    09  19:39  LAST QUARTER MOON 
    10  08:18  Pollux 4.1°N of Moon
    11  07:27  Beehive 2.1°S of Moon
    12  20:59  Regulus 4.5°S of Moon
    13  18     Mars at Opposition 
    13  18:57  Venus 4.3°S of Moon
    16  14:31  NEW MOON 
    16  18:46  Moon at Perigee: 356913 km
    19  14:12  Antares 5.7°S of Moon
    20  10:53  Moon at Descending Node 
    21  00     Orionid Meteor Shower
    22  12:10  Jupiter 2.0°N of Moon
    22  22:49  Saturn 2.6°N of Moon
    23  08:23  FIRST QUARTER MOON 
    25  13     Mercury at Inferior Conjunction 
    29  11:13  Mars 3.0°N of Moon
    30  13:46  Moon at Apogee: 406393 km
    30  16     Venus at Perihelion 
    31  09:49  FULL MOON 
    31  11     Uranus at Opposition 

Nov 01  22     Mercury at Perihelion 
    03  01:58  Aldebaran 4.6°S of Moon
    03  21:39  Moon at Ascending Node 
    05  01     S Taurid Meteor Shower
    06  14:52  Pollux 3.9°N of Moon
    07  14:34  Beehive 2.3°S of Moon
    08  08:46  LAST QUARTER MOON 
    09  05:20  Regulus 4.7°S of Moon
    10  12     Mercury at Greatest Elong: 19.1°W
    12  00     N Taurid Meteor Shower
    12  16:30  Venus 3.1°S of Moon
    13  15:45  Mercury 1.7°S of Moon
    14  06:48  Moon at Perigee: 357839 km
    15  00:07  NEW MOON 
    16  08:27  Venus 3.6°N of Spica
    16  19:07  Moon at Descending Node 
    17  06     Leonid Meteor Shower
    19  03:54  Jupiter 2.5°N of Moon
    19  09:57  Saturn 2.9°N of Moon
    21  23:45  FIRST QUARTER MOON 
    25  14:45  Mars 4.9°N of Moon
    26  19:29  Moon at Apogee: 405891 km
    30  04:30  FULL MOON 
    30  04:43  Pen. Lunar Eclipse; mag=0.829
    30  08:07  Aldebaran 4.6°S of Moon

Dec 01  02:46  Moon at Ascending Node 
    03  20:24  Pollux 3.8°N of Moon
    04  20:10  Beehive 2.4°S of Moon
    06  11:28  Regulus 4.8°S of Moon
    07  19:37  LAST QUARTER MOON 
    12  15:40  Venus 0.8°S of Moon: Occn.
    12  15:42  Moon at Perigee: 361777 km
    13  20     Geminid Meteor Shower
    14  06:03  Moon at Descending Node 
    14  11:13  Total Solar Eclipse; mag=1.025
    14  11:17  NEW MOON 
    16  23:28  Jupiter 2.9°N of Moon
    17  00:25  Saturn 3.1°N of Moon
    19  22     Mercury at Superior Conjunction 
    21  05:03  Winter Solstice 
    21  18:41  FIRST QUARTER MOON 
    22  04     Ursid Meteor Shower
    23  09:48  Venus 5.5°N of Antares
    23  13:30  Mars 5.6°N of Moon
    24  11:32  Moon at Apogee: 405010 km
    27  15:20  Aldebaran 4.6°S of Moon
    28  10:03  Moon at Ascending Node 
    29  22:28  FULL MOON 
    31  02:41  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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