2013 Calendar of Astronomical Events




    


2013 Phases of the Moon

Atlantic 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.

2013 Phases of the Moon
Atlantic Standard Time
New Moon First Quarter Full Moon Last Quarter
--- Jan 4 23:58
Jan 11 15:44 Jan 18 19:45 Jan 27 00:38 Feb 3 09:56
Feb 10 03:20 Feb 17 16:31 Feb 25 16:26 Mar 4 17:53
Mar 11 15:51 Mar 19 13:27 Mar 27 05:27 Apr 3 00:37
Apr 10 05:35 Apr 18 08:31 Apr 25 15:57 p May 2 07:14
May 9 20:29 A May 18 00:35 May 25 00:25 n May 31 14:58
Jun 8 11:56 Jun 16 13:24 Jun 23 07:32 Jun 30 00:54
Jul 8 03:14 Jul 15 23:18 Jul 22 14:15 Jul 29 13:43
Aug 6 17:51 Aug 14 06:56 Aug 20 21:45 Aug 28 05:35
Sep 5 07:36 Sep 12 13:08 Sep 19 07:13 Sep 26 23:56
Oct 4 20:35 Oct 11 19:02 Oct 18 19:38 n Oct 26 19:41
Nov 3 08:50 H Nov 10 01:57 Nov 17 11:16 Nov 25 15:28
Dec 2 20:22 Dec 9 11:12 Dec 17 05:28 Dec 25 09:48

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

Atlantic 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.

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

Jan 01  17:13  Regulus 5.9°N of Moon
    02  01     Earth at Perihelion: 0.98329 AU
    03  10     Quadrantid Meteor Shower
    03  23     Mercury at Aphelion 
    04  23:58  LAST QUARTER MOON 
    05  15:54  Spica 0.6°N of Moon
    06  21:28  Saturn 3.7°N of Moon
    07  19:50  Moon at Ascending Node 
    08  18:55  Antares 5.9°S of Moon
    10  06:26  Moon at Perigee: 360048 km
    10  07:36  Venus 2.8°S of Moon
    11  15:44  NEW MOON 
    18  05     Mercury at Superior Conjunction 
    18  19:45  FIRST QUARTER MOON 
    20  21:19  Moon at Descending Node 
    21  22:57  Jupiter 0.5°N of Moon: Occn.
    22  06:52  Moon at Apogee: 405313 km
    22  07:13  Aldebaran 4.0°S of Moon
    24  08     Mars at Perihelion 
    27  00:38  FULL MOON 
    28  22:57  Regulus 5.8°N of Moon

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

Mar 01  02:56  Spica 0.1°N of Moon
    02  11:21  Saturn 3.3°N of Moon
    02  22:30  Moon at Ascending Node 
    04  08:11  Antares 6.4°S of Moon
    04  09     Mercury at Inferior Conjunction 
    04  17:53  LAST QUARTER MOON 
    05  19:20  Moon at Perigee: 369954 km
    11  15:51  NEW MOON 
    16  02:15  Moon at Descending Node 
    17  21:16  Jupiter 1.5°N of Moon
    17  21:24  Jupiter 5.0°N of Aldebaran
    17  22:56  Aldebaran 3.5°S of Moon
    18  23:13  Moon at Apogee: 404262 km
    19  13:27  FIRST QUARTER MOON 
    20  07:02  Vernal Equinox 
    24  15:17  Regulus 5.8°N of Moon
    27  05:27  FULL MOON 
    28  10:29  Spica 0.0°N of Moon
    28  13     Venus at Superior Conjunction 
    28  20     Uranus in Conjunction with Sun 
    29  16:18  Saturn 3.3°N of Moon
    30  01:55  Moon at Ascending Node 
    30  23:55  Moon at Perigee: 367494 km
    31  18     Mercury at Greatest Elong: 27.8°W

Apr 03  00:37  LAST QUARTER MOON 
    10  05:35  NEW MOON 
    12  08:12  Moon at Descending Node 
    14  06:51  Aldebaran 3.4°S of Moon
    14  14:23  Jupiter 2.1°N of Moon
    15  18:21  Moon at Apogee: 404865 km
    17  20     Mars in Conjunction with Sun 
    18  08:31  FIRST QUARTER MOON 
    21  00:44  Regulus 5.9°N of Moon
    22  07     Lyrid Meteor Shower
    24  20:10  Spica 0.0°N of Moon
    25  15:57  FULL MOON 
    25  16:07  Partial Lunar Eclipse; mag=0.015
    25  22:28  Saturn 3.5°N of Moon
    26  10:07  Moon at Ascending Node 
    27  15:48  Moon at Perigee: 362268 km
    28  04     Saturn at Opposition 

May 02  07:14  LAST QUARTER MOON 
    04  20     Eta-Aquarid Meteor Shower
    09  15:12  Moon at Descending Node 
    09  20:25  Annular Solar Eclipse; mag=0.954
    09  20:29  NEW MOON 
    11  17     Mercury at Superior Conjunction 
    12  09:03  Jupiter 2.6°N of Moon
    13  09:31  Moon at Apogee: 405827 km
    15  22     Mercury at Perihelion 
    18  00:35  FIRST QUARTER MOON 
    18  09:14  Regulus 5.9°N of Moon
    22  06:35  Spica 0.0°N of Moon
    23  05:55  Saturn 3.7°N of Moon
    23  20:40  Moon at Ascending Node 
    24  17     Mercury 1.4° of Venus
    25  00:10  Pen. Lunar Eclipse; mag=0.016
    25  00:25  FULL MOON 
    25  07:45  Antares 6.6°S of Moon
    25  21:45  Moon at Perigee: 358375 km
    27  02     Mercury 2.4° of Jupiter
    31  14:58  LAST QUARTER MOON 

Jun 05  20:59  Moon at Descending Node 
    08  11:56  NEW MOON 
    09  17:40  Moon at Apogee: 406487 km
    10  07:19  Venus 5.3°N of Moon
    12  13     Mercury at Greatest Elong: 24.3°E
    13  07     Venus at Perihelion 
    14  16:06  Regulus 5.8°N of Moon
    16  13:24  FIRST QUARTER MOON 
    18  08:57  Mercury 6.1°S of Pollux
    18  15:56  Spica 0.1°S of Moon
    19  11     Jupiter in Conjunction with Sun 
    19  13:45  Saturn 3.6°N of Moon
    20  03     Mercury 1.9° of Venus
    20  05:51  Moon at Ascending Node 
    21  01:04  Summer Solstice 
    22  00:49  Venus 5.1°S of Pollux
    23  07:09  Moon at Perigee: 356990 km
    23  07:32  FULL MOON 
    28  21     Mercury at Aphelion 
    30  00:54  LAST QUARTER MOON 

Date     AST   Event
        (h:m)

Jul 03  00:15  Moon at Descending Node 
    03  11:26  Venus 0.1°N of Beehive
    05  02:09  Aldebaran 3.4°S of Moon
    05  11     Earth at Aphelion: 1.01671 AU
    06  20:36  Moon at Apogee: 406493 km
    08  03:14  NEW MOON 
    09  15     Mercury at Inferior Conjunction 
    11  21:45  Regulus 5.7°N of Moon
    15  23:13  Spica 0.3°S of Moon
    15  23:18  FIRST QUARTER MOON 
    16  21:19  Saturn 3.3°N of Moon
    17  10:58  Moon at Ascending Node 
    21  16:27  Moon at Perigee: 358402 km
    22  05:30  Venus 1.0°N of Regulus
    22  14:15  FULL MOON 
    27  22     Delta-Aquarid Meteor Shower
    28  15     Mercury 6.9° of Mars
    29  13:43  LAST QUARTER MOON 
    30  01:50  Moon at Descending Node 
    30  05     Mercury at Greatest Elong: 19.6°W

Aug 01  08:22  Aldebaran 3.2°S of Moon
    03  04:53  Moon at Apogee: 405834 km
    03  18:22  Jupiter 4.0°N of Moon
    04  18:31  Mercury 7.3°S of Pollux
    05  04:39  Mercury 4.4°N of Moon
    06  17:51  NEW MOON 
    09  22:19  Venus 5.1°N of Moon
    11  21     Mercury at Perihelion 
    12  04:46  Spica 0.6°S of Moon
    12  14     Perseid Meteor Shower
    13  04:51  Saturn 2.8°N of Moon
    13  12:20  Moon at Ascending Node 
    14  06:56  FIRST QUARTER MOON 
    17  13:03  Mars 5.8°S of Pollux
    18  21:26  Moon at Perigee: 362265 km
    20  21:45  FULL MOON 
    24  17     Mercury at Superior Conjunction 
    26  04:19  Moon at Descending Node 
    26  20     Neptune at Opposition 
    28  05:35  LAST QUARTER MOON 
    28  15:32  Aldebaran 2.9°S of Moon
    30  19:46  Moon at Apogee: 404883 km
    31  12:38  Jupiter 4.5°N of Moon

Sep 05  07:36  NEW MOON 
    05  20:37  Venus 1.5°N of Spica
    08  06:00  Mars 0.5°S of Beehive
    08  10:11  Spica 0.8°S of Moon
    08  17:04  Venus 0.4°N of Moon: Occn.
    09  13:29  Moon at Ascending Node 
    09  13:29  Saturn 2.3°N of Moon
    12  13:08  FIRST QUARTER MOON 
    15  12:34  Moon at Perigee: 367388 km
    19  07:13  FULL MOON 
    22  09:48  Moon at Descending Node 
    22  16:44  Autumnal Equinox 
    24  18:29  Mercury 0.7°N of Spica
    24  23:39  Aldebaran 2.7°S of Moon
    26  23:56  LAST QUARTER MOON 
    27  14:17  Moon at Apogee: 404309 km
    28  05:05  Jupiter 4.9°N of Moon

Oct 01  18:19  Regulus 5.6°N of Moon
    03  09     Uranus at Opposition 
    03  15     Venus at Aphelion 
    04  20:35  NEW MOON 
    06  18:08  Moon at Ascending Node 
    06  18:28  Mercury 2.8°S of Moon
    07  00:30  Saturn 1.9°N of Moon
    08  08:07  Venus 4.7°S of Moon
    08  09     Mercury 5.0° of Saturn
    09  06     Mercury at Greatest Elong: 25.3°E
    10  19:06  Moon at Perigee: 369813 km
    11  19:02  FIRST QUARTER MOON 
    14  23:51  Mars 0.9°N of Regulus
    16  14:26  Venus 1.5°N of Antares
    18  19:38  FULL MOON 
    18  19:50  Pen. Lunar Eclipse; mag=0.765
    19  17:47  Moon at Descending Node 
    21  06     Orionid Meteor Shower
    22  08:06  Aldebaran 2.7°S of Moon
    25  10:25  Moon at Apogee: 404561 km
    25  17:55  Jupiter 5.1°N of Moon
    26  19:41  LAST QUARTER MOON 
    29  03:17  Regulus 5.7°N of Moon

Nov 01  05     Venus at Greatest Elong: 47.1°E
    01  16     Mercury at Inferior Conjunction 
    03  02:52  Moon at Ascending Node 
    03  08:46  Hybrid Solar Eclipse; mag=1.016
    03  08:50  NEW MOON 
    05  07     S Taurid Meteor Shower
    06  05:28  Moon at Perigee: 365362 km
    06  07     Saturn in Conjunction with Sun 
    07  20     Mercury at Perihelion 
    08  11:08  Jupiter 6.1°S of Pollux
    10  01:57  FIRST QUARTER MOON 
    12  06     N Taurid Meteor Shower
    16  01:30  Moon at Descending Node 
    17  11:16  FULL MOON 
    17  12     Leonid Meteor Shower
    17  22     Mercury at Greatest Elong: 19.5°W
    18  16:00  Aldebaran 2.7°S of Moon
    22  01:21  Jupiter 5.1°N of Moon
    22  05:50  Moon at Apogee: 405446 km
    25  11:45  Regulus 5.6°N of Moon
    25  15:28  LAST QUARTER MOON 
    26  01     Mercury 0.3° of Saturn
    27  12:10  Mars 5.7°N of Moon
    29  12:43  Spica 0.9°S of Moon
    30  12:59  Moon at Ascending Node 

Dec 01  06:13  Saturn 1.2°N of Moon: Occn.
    02  20:22  NEW MOON 
    04  06:15  Moon at Perigee: 360065 km
    09  11:12  FIRST QUARTER MOON 
    13  06:10  Moon at Descending Node 
    14  01     Geminid Meteor Shower
    15  22:45  Aldebaran 2.7°S of Moon
    17  05:28  FULL MOON 
    19  03:11  Jupiter 5.0°N of Moon
    19  19:49  Moon at Apogee: 406269 km
    21  13:11  Winter Solstice 
    21  20     Mercury at Aphelion 
    22  10     Ursid Meteor Shower
    22  18:47  Regulus 5.4°N of Moon
    25  09:48  LAST QUARTER MOON 
    25  22:45  Mars 4.6°N of Moon
    26  22:10  Spica 1.0°S of Moon
    27  20:21  Moon at Ascending Node 
    28  21:42  Saturn 0.9°N of Moon: Occn.
    29  02     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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