2013 Calendar of Astronomical Events




    


2013 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.

2013 Phases of the Moon
Greenwich Mean Time
New Moon First Quarter Full Moon Last Quarter
--- Jan 5 03:58
Jan 11 19:44 Jan 18 23:45 Jan 27 04:38 Feb 3 13:56
Feb 10 07:20 Feb 17 20:31 Feb 25 20:26 Mar 4 21:53
Mar 11 19:51 Mar 19 17:27 Mar 27 09:27 Apr 3 04:37
Apr 10 09:35 Apr 18 12:31 Apr 25 19:57 p May 2 11:14
May 10 00:29 A May 18 04:35 May 25 04:25 n May 31 18:58
Jun 8 15:56 Jun 16 17:24 Jun 23 11:32 Jun 30 04:54
Jul 8 07:14 Jul 16 03:18 Jul 22 18:15 Jul 29 17:43
Aug 6 21:51 Aug 14 10:56 Aug 21 01:45 Aug 28 09:35
Sep 5 11:36 Sep 12 17:08 Sep 19 11:13 Sep 27 03:56
Oct 5 00:35 Oct 11 23:02 Oct 18 23:38 n Oct 26 23:41
Nov 3 12:50 H Nov 10 05:57 Nov 17 15:16 Nov 25 19:28
Dec 3 00:22 Dec 9 15:12 Dec 17 09:28 Dec 25 13:48

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.



2013 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.

2013 Calendar of Astronomical Events
January - June July - December
Date     GMT   Event
        (h:m)

Jan 01  21:13  Regulus 5.9°N of Moon
    02  05     Earth at Perihelion: 0.98329 AU
    03  14     Quadrantid Meteor Shower
    04  03     Mercury at Aphelion 
    05  03:58  LAST QUARTER MOON 
    05  19:54  Spica 0.6°N of Moon
    07  01:28  Saturn 3.7°N of Moon
    07  23:50  Moon at Ascending Node 
    08  22:55  Antares 5.9°S of Moon
    10  10:26  Moon at Perigee: 360048 km
    10  11:36  Venus 2.8°S of Moon
    11  19:44  NEW MOON 
    18  09     Mercury at Superior Conjunction 
    18  23:45  FIRST QUARTER MOON 
    21  01:19  Moon at Descending Node 
    22  02:57  Jupiter 0.5°N of Moon: Occn.
    22  10:52  Moon at Apogee: 405313 km
    22  11:13  Aldebaran 4.0°S of Moon
    24  12     Mars at Perihelion 
    27  04:38  FULL MOON 
    29  02:57  Regulus 5.8°N of Moon

Feb 02  01:25  Spica 0.3°N of Moon
    03  09:55  Saturn 3.5°N of Moon
    03  13:56  LAST QUARTER MOON 
    04  02:14  Moon at Ascending Node 
    05  06:39  Antares 6.1°S of Moon
    07  12:09  Moon at Perigee: 365314 km
    08  16     Mercury 0.3° of Mars
    10  07:20  NEW MOON 
    11  17:51  Mercury 5.2°S of Moon
    16  21     Mercury at Greatest Elong: 18.1°E
    17  02     Mercury at Perihelion 
    17  02:57  Moon at Descending Node 
    17  20:31  FIRST QUARTER MOON 
    18  11:31  Jupiter 0.9°N of Moon: Occn.
    18  18:49  Aldebaran 3.8°S of Moon
    19  06:30  Moon at Apogee: 404475 km
    21  02     Venus at Aphelion 
    21  07     Neptune in Conjunction with Sun 
    25  10:18  Regulus 5.7°N of Moon
    25  20:26  FULL MOON 
    25  22     Mercury 4.1° of Mars

Mar 01  06:56  Spica 0.1°N of Moon
    02  15:21  Saturn 3.3°N of Moon
    03  02:30  Moon at Ascending Node 
    04  12:11  Antares 6.4°S of Moon
    04  13     Mercury at Inferior Conjunction 
    04  21:53  LAST QUARTER MOON 
    05  23:20  Moon at Perigee: 369954 km
    11  19:51  NEW MOON 
    16  06:15  Moon at Descending Node 
    18  01:16  Jupiter 1.5°N of Moon
    18  01:24  Jupiter 5.0°N of Aldebaran
    18  02:56  Aldebaran 3.5°S of Moon
    19  03:13  Moon at Apogee: 404262 km
    19  17:27  FIRST QUARTER MOON 
    20  11:02  Vernal Equinox 
    24  19:17  Regulus 5.8°N of Moon
    27  09:27  FULL MOON 
    28  14:29  Spica 0.0°N of Moon
    28  17     Venus at Superior Conjunction 
    29  00     Uranus in Conjunction with Sun 
    29  20:18  Saturn 3.3°N of Moon
    30  05:55  Moon at Ascending Node 
    31  03:55  Moon at Perigee: 367494 km
    31  22     Mercury at Greatest Elong: 27.8°W

Apr 03  04:37  LAST QUARTER MOON 
    10  09:35  NEW MOON 
    12  12:12  Moon at Descending Node 
    14  10:51  Aldebaran 3.4°S of Moon
    14  18:23  Jupiter 2.1°N of Moon
    15  22:21  Moon at Apogee: 404865 km
    18  00     Mars in Conjunction with Sun 
    18  12:31  FIRST QUARTER MOON 
    21  04:44  Regulus 5.9°N of Moon
    22  11     Lyrid Meteor Shower
    25  00:10  Spica 0.0°N of Moon
    25  19:57  FULL MOON 
    25  20:07  Partial Lunar Eclipse; mag=0.015
    26  02:28  Saturn 3.5°N of Moon
    26  14:07  Moon at Ascending Node 
    27  19:48  Moon at Perigee: 362268 km
    28  08     Saturn at Opposition 

May 02  11:14  LAST QUARTER MOON 
    05  00     Eta-Aquarid Meteor Shower
    09  19:12  Moon at Descending Node 
    10  00:25  Annular Solar Eclipse; mag=0.954
    10  00:29  NEW MOON 
    11  21     Mercury at Superior Conjunction 
    12  13:03  Jupiter 2.6°N of Moon
    13  13:31  Moon at Apogee: 405827 km
    16  02     Mercury at Perihelion 
    18  04:35  FIRST QUARTER MOON 
    18  13:14  Regulus 5.9°N of Moon
    22  10:35  Spica 0.0°N of Moon
    23  09:55  Saturn 3.7°N of Moon
    24  00:40  Moon at Ascending Node 
    24  21     Mercury 1.4° of Venus
    25  04:10  Pen. Lunar Eclipse; mag=0.016
    25  04:25  FULL MOON 
    25  11:45  Antares 6.6°S of Moon
    26  01:45  Moon at Perigee: 358375 km
    27  06     Mercury 2.4° of Jupiter
    31  18:58  LAST QUARTER MOON 

Jun 06  00:59  Moon at Descending Node 
    08  15:56  NEW MOON 
    09  21:40  Moon at Apogee: 406487 km
    10  11:19  Venus 5.3°N of Moon
    12  17     Mercury at Greatest Elong: 24.3°E
    13  11     Venus at Perihelion 
    14  20:06  Regulus 5.8°N of Moon
    16  17:24  FIRST QUARTER MOON 
    18  12:57  Mercury 6.1°S of Pollux
    18  19:56  Spica 0.1°S of Moon
    19  15     Jupiter in Conjunction with Sun 
    19  17:45  Saturn 3.6°N of Moon
    20  07     Mercury 1.9° of Venus
    20  09:51  Moon at Ascending Node 
    21  05:04  Summer Solstice 
    22  04:49  Venus 5.1°S of Pollux
    23  11:09  Moon at Perigee: 356990 km
    23  11:32  FULL MOON 
    29  01     Mercury at Aphelion 
    30  04:54  LAST QUARTER MOON 

Date     GMT   Event
        (h:m)

Jul 03  04:15  Moon at Descending Node 
    03  15:26  Venus 0.1°N of Beehive
    05  06:09  Aldebaran 3.4°S of Moon
    05  15     Earth at Aphelion: 1.01671 AU
    07  00:36  Moon at Apogee: 406493 km
    08  07:14  NEW MOON 
    09  19     Mercury at Inferior Conjunction 
    12  01:45  Regulus 5.7°N of Moon
    16  03:13  Spica 0.3°S of Moon
    16  03:18  FIRST QUARTER MOON 
    17  01:19  Saturn 3.3°N of Moon
    17  14:58  Moon at Ascending Node 
    21  20:27  Moon at Perigee: 358402 km
    22  09:30  Venus 1.0°N of Regulus
    22  18:15  FULL MOON 
    28  02     Delta-Aquarid Meteor Shower
    28  19     Mercury 6.9° of Mars
    29  17:43  LAST QUARTER MOON 
    30  05:50  Moon at Descending Node 
    30  09     Mercury at Greatest Elong: 19.6°W

Aug 01  12:22  Aldebaran 3.2°S of Moon
    03  08:53  Moon at Apogee: 405834 km
    03  22:22  Jupiter 4.0°N of Moon
    04  22:31  Mercury 7.3°S of Pollux
    05  08:39  Mercury 4.4°N of Moon
    06  21:51  NEW MOON 
    10  02:19  Venus 5.1°N of Moon
    12  01     Mercury at Perihelion 
    12  08:46  Spica 0.6°S of Moon
    12  18     Perseid Meteor Shower
    13  08:51  Saturn 2.8°N of Moon
    13  16:20  Moon at Ascending Node 
    14  10:56  FIRST QUARTER MOON 
    17  17:03  Mars 5.8°S of Pollux
    19  01:26  Moon at Perigee: 362265 km
    21  01:45  FULL MOON 
    24  21     Mercury at Superior Conjunction 
    26  08:19  Moon at Descending Node 
    27  00     Neptune at Opposition 
    28  09:35  LAST QUARTER MOON 
    28  19:32  Aldebaran 2.9°S of Moon
    30  23:46  Moon at Apogee: 404883 km
    31  16:38  Jupiter 4.5°N of Moon

Sep 05  11:36  NEW MOON 
    06  00:37  Venus 1.5°N of Spica
    08  10:00  Mars 0.5°S of Beehive
    08  14:11  Spica 0.8°S of Moon
    08  21:04  Venus 0.4°N of Moon: Occn.
    09  17:29  Moon at Ascending Node 
    09  17:29  Saturn 2.3°N of Moon
    12  17:08  FIRST QUARTER MOON 
    15  16:34  Moon at Perigee: 367388 km
    19  11:13  FULL MOON 
    22  13:48  Moon at Descending Node 
    22  20:44  Autumnal Equinox 
    24  22:29  Mercury 0.7°N of Spica
    25  03:39  Aldebaran 2.7°S of Moon
    27  03:56  LAST QUARTER MOON 
    27  18:17  Moon at Apogee: 404309 km
    28  09:05  Jupiter 4.9°N of Moon

Oct 01  22:19  Regulus 5.6°N of Moon
    03  13     Uranus at Opposition 
    03  19     Venus at Aphelion 
    05  00:35  NEW MOON 
    06  22:08  Moon at Ascending Node 
    06  22:28  Mercury 2.8°S of Moon
    07  04:30  Saturn 1.9°N of Moon
    08  12:07  Venus 4.7°S of Moon
    08  13     Mercury 5.0° of Saturn
    09  10     Mercury at Greatest Elong: 25.3°E
    10  23:06  Moon at Perigee: 369813 km
    11  23:02  FIRST QUARTER MOON 
    15  03:51  Mars 0.9°N of Regulus
    16  18:26  Venus 1.5°N of Antares
    18  23:38  FULL MOON 
    18  23:50  Pen. Lunar Eclipse; mag=0.765
    19  21:47  Moon at Descending Node 
    21  10     Orionid Meteor Shower
    22  12:06  Aldebaran 2.7°S of Moon
    25  14:25  Moon at Apogee: 404561 km
    25  21:55  Jupiter 5.1°N of Moon
    26  23:41  LAST QUARTER MOON 
    29  07:17  Regulus 5.7°N of Moon

Nov 01  09     Venus at Greatest Elong: 47.1°E
    01  20     Mercury at Inferior Conjunction 
    03  06:52  Moon at Ascending Node 
    03  12:46  Hybrid Solar Eclipse; mag=1.016
    03  12:50  NEW MOON 
    05  11     S Taurid Meteor Shower
    06  09:28  Moon at Perigee: 365362 km
    06  11     Saturn in Conjunction with Sun 
    08  00     Mercury at Perihelion 
    08  15:08  Jupiter 6.1°S of Pollux
    10  05:57  FIRST QUARTER MOON 
    12  10     N Taurid Meteor Shower
    16  05:30  Moon at Descending Node 
    17  15:16  FULL MOON 
    17  16     Leonid Meteor Shower
    18  02     Mercury at Greatest Elong: 19.5°W
    18  20:00  Aldebaran 2.7°S of Moon
    22  05:21  Jupiter 5.1°N of Moon
    22  09:50  Moon at Apogee: 405446 km
    25  15:45  Regulus 5.6°N of Moon
    25  19:28  LAST QUARTER MOON 
    26  05     Mercury 0.3° of Saturn
    27  16:10  Mars 5.7°N of Moon
    29  16:43  Spica 0.9°S of Moon
    30  16:59  Moon at Ascending Node 

Dec 01  10:13  Saturn 1.2°N of Moon: Occn.
    03  00:22  NEW MOON 
    04  10:15  Moon at Perigee: 360065 km
    09  15:12  FIRST QUARTER MOON 
    13  10:10  Moon at Descending Node 
    14  05     Geminid Meteor Shower
    16  02:45  Aldebaran 2.7°S of Moon
    17  09:28  FULL MOON 
    19  07:11  Jupiter 5.0°N of Moon
    19  23:49  Moon at Apogee: 406269 km
    21  17:11  Winter Solstice 
    22  00     Mercury at Aphelion 
    22  14     Ursid Meteor Shower
    22  22:47  Regulus 5.4°N of Moon
    25  13:48  LAST QUARTER MOON 
    26  02:45  Mars 4.6°N of Moon
    27  02:10  Spica 1.0°S of Moon
    28  00:21  Moon at Ascending Node 
    29  01:42  Saturn 0.9°N of Moon: Occn.
    29  06     Mercury at Superior Conjunction 

    

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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