2013 Calendar of Astronomical Events




    


2013 Phases of the Moon

Alaska 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
Alaska Standard Time
New Moon First Quarter Full Moon Last Quarter
--- Jan 4 18:58
Jan 11 10:44 Jan 18 14:45 Jan 26 19:38 Feb 3 04:56
Feb 9 22:20 Feb 17 11:31 Feb 25 11:26 Mar 4 12:53
Mar 11 10:51 Mar 19 08:27 Mar 27 00:27 Apr 2 19:37
Apr 10 00:35 Apr 18 03:31 Apr 25 10:57 p May 2 02:14
May 9 15:29 A May 17 19:35 May 24 19:25 n May 31 09:58
Jun 8 06:56 Jun 16 08:24 Jun 23 02:32 Jun 29 19:54
Jul 7 22:14 Jul 15 18:18 Jul 22 09:15 Jul 29 08:43
Aug 6 12:51 Aug 14 01:56 Aug 20 16:45 Aug 28 00:35
Sep 5 02:36 Sep 12 08:08 Sep 19 02:13 Sep 26 18:56
Oct 4 15:35 Oct 11 14:02 Oct 18 14:38 n Oct 26 14:41
Nov 3 03:50 H Nov 9 20:57 Nov 17 06:16 Nov 25 10:28
Dec 2 15:22 Dec 9 06:12 Dec 17 00:28 Dec 25 04:48

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

Alaska 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     AKST   Even
        (h:m)

Jan 01  12:13  Regulus 5.9°N of Moon
    01  20     Earth at Perihelion: 0.98329 AU
    03  05     Quadrantid Meteor Shower
    03  18     Mercury at Aphelion 
    04  18:58  LAST QUARTER MOON 
    05  10:54  Spica 0.6°N of Moon
    06  16:28  Saturn 3.7°N of Moon
    07  14:50  Moon at Ascending Node 
    08  13:55  Antares 5.9°S of Moon
    10  01:26  Moon at Perigee: 360048 km
    10  02:36  Venus 2.8°S of Moon
    11  10:44  NEW MOON 
    18  00     Mercury at Superior Conjunction 
    18  14:45  FIRST QUARTER MOON 
    20  16:19  Moon at Descending Node 
    21  17:57  Jupiter 0.5°N of Moon: Occn.
    22  01:52  Moon at Apogee: 405313 km
    22  02:13  Aldebaran 4.0°S of Moon
    24  03     Mars at Perihelion 
    26  19:38  FULL MOON 
    28  17:57  Regulus 5.8°N of Moon

Feb 01  16:25  Spica 0.3°N of Moon
    03  00:55  Saturn 3.5°N of Moon
    03  04:56  LAST QUARTER MOON 
    03  17:14  Moon at Ascending Node 
    04  21:39  Antares 6.1°S of Moon
    07  03:09  Moon at Perigee: 365314 km
    08  07     Mercury 0.3° of Mars
    09  22:20  NEW MOON 
    11  08:51  Mercury 5.2°S of Moon
    16  12     Mercury at Greatest Elong: 18.1°E
    16  17     Mercury at Perihelion 
    16  17:57  Moon at Descending Node 
    17  11:31  FIRST QUARTER MOON 
    18  02:31  Jupiter 0.9°N of Moon: Occn.
    18  09:49  Aldebaran 3.8°S of Moon
    18  21:30  Moon at Apogee: 404475 km
    20  17     Venus at Aphelion 
    20  22     Neptune in Conjunction with Sun 
    25  01:18  Regulus 5.7°N of Moon
    25  11:26  FULL MOON 
    25  13     Mercury 4.1° of Mars
    28  21:56  Spica 0.1°N of Moon

Mar 02  06:21  Saturn 3.3°N of Moon
    02  17:30  Moon at Ascending Node 
    04  03:11  Antares 6.4°S of Moon
    04  04     Mercury at Inferior Conjunction 
    04  12:53  LAST QUARTER MOON 
    05  14:20  Moon at Perigee: 369954 km
    11  10:51  NEW MOON 
    15  21:15  Moon at Descending Node 
    17  16:16  Jupiter 1.5°N of Moon
    17  16:24  Jupiter 5.0°N of Aldebaran
    17  17:56  Aldebaran 3.5°S of Moon
    18  18:13  Moon at Apogee: 404262 km
    19  08:27  FIRST QUARTER MOON 
    20  02:02  Vernal Equinox 
    24  10:17  Regulus 5.8°N of Moon
    27  00:27  FULL MOON 
    28  05:29  Spica 0.0°N of Moon
    28  08     Venus at Superior Conjunction 
    28  15     Uranus in Conjunction with Sun 
    29  11:18  Saturn 3.3°N of Moon
    29  20:55  Moon at Ascending Node 
    30  18:55  Moon at Perigee: 367494 km
    31  13     Mercury at Greatest Elong: 27.8°W

Apr 02  19:37  LAST QUARTER MOON 
    10  00:35  NEW MOON 
    12  03:12  Moon at Descending Node 
    14  01:51  Aldebaran 3.4°S of Moon
    14  09:23  Jupiter 2.1°N of Moon
    15  13:21  Moon at Apogee: 404865 km
    17  15     Mars in Conjunction with Sun 
    18  03:31  FIRST QUARTER MOON 
    20  19:44  Regulus 5.9°N of Moon
    22  02     Lyrid Meteor Shower
    24  15:10  Spica 0.0°N of Moon
    25  10:57  FULL MOON 
    25  11:07  Partial Lunar Eclipse; mag=0.015
    25  17:28  Saturn 3.5°N of Moon
    26  05:07  Moon at Ascending Node 
    27  10:48  Moon at Perigee: 362268 km
    27  23     Saturn at Opposition 

May 02  02:14  LAST QUARTER MOON 
    04  15     Eta-Aquarid Meteor Shower
    09  10:12  Moon at Descending Node 
    09  15:25  Annular Solar Eclipse; mag=0.954
    09  15:29  NEW MOON 
    11  12     Mercury at Superior Conjunction 
    12  04:03  Jupiter 2.6°N of Moon
    13  04:31  Moon at Apogee: 405827 km
    15  17     Mercury at Perihelion 
    17  19:35  FIRST QUARTER MOON 
    18  04:14  Regulus 5.9°N of Moon
    22  01:35  Spica 0.0°N of Moon
    23  00:55  Saturn 3.7°N of Moon
    23  15:40  Moon at Ascending Node 
    24  12     Mercury 1.4° of Venus
    24  19:10  Pen. Lunar Eclipse; mag=0.016
    24  19:25  FULL MOON 
    25  02:45  Antares 6.6°S of Moon
    25  16:45  Moon at Perigee: 358375 km
    26  21     Mercury 2.4° of Jupiter
    31  09:58  LAST QUARTER MOON 

Jun 05  15:59  Moon at Descending Node 
    08  06:56  NEW MOON 
    09  12:40  Moon at Apogee: 406487 km
    10  02:19  Venus 5.3°N of Moon
    12  08     Mercury at Greatest Elong: 24.3°E
    13  02     Venus at Perihelion 
    14  11:06  Regulus 5.8°N of Moon
    16  08:24  FIRST QUARTER MOON 
    18  03:57  Mercury 6.1°S of Pollux
    18  10:56  Spica 0.1°S of Moon
    19  06     Jupiter in Conjunction with Sun 
    19  08:45  Saturn 3.6°N of Moon
    19  22     Mercury 1.9° of Venus
    20  00:51  Moon at Ascending Node 
    20  20:04  Summer Solstice 
    21  19:49  Venus 5.1°S of Pollux
    23  02:09  Moon at Perigee: 356990 km
    23  02:32  FULL MOON 
    28  16     Mercury at Aphelion 
    29  19:54  LAST QUARTER MOON 

Date     AKST   Even
        (h:m)

Jul 02  19:15  Moon at Descending Node 
    03  06:26  Venus 0.1°N of Beehive
    04  21:09  Aldebaran 3.4°S of Moon
    05  06     Earth at Aphelion: 1.01671 AU
    06  15:36  Moon at Apogee: 406493 km
    07  22:14  NEW MOON 
    09  10     Mercury at Inferior Conjunction 
    11  16:45  Regulus 5.7°N of Moon
    15  18:13  Spica 0.3°S of Moon
    15  18:18  FIRST QUARTER MOON 
    16  16:19  Saturn 3.3°N of Moon
    17  05:58  Moon at Ascending Node 
    21  11:27  Moon at Perigee: 358402 km
    22  00:30  Venus 1.0°N of Regulus
    22  09:15  FULL MOON 
    27  17     Delta-Aquarid Meteor Shower
    28  10     Mercury 6.9° of Mars
    29  08:43  LAST QUARTER MOON 
    29  20:50  Moon at Descending Node 
    30  00     Mercury at Greatest Elong: 19.6°W

Aug 01  03:22  Aldebaran 3.2°S of Moon
    02  23:53  Moon at Apogee: 405834 km
    03  13:22  Jupiter 4.0°N of Moon
    04  13:31  Mercury 7.3°S of Pollux
    04  23:39  Mercury 4.4°N of Moon
    06  12:51  NEW MOON 
    09  17:19  Venus 5.1°N of Moon
    11  16     Mercury at Perihelion 
    11  23:46  Spica 0.6°S of Moon
    12  09     Perseid Meteor Shower
    12  23:51  Saturn 2.8°N of Moon
    13  07:20  Moon at Ascending Node 
    14  01:56  FIRST QUARTER MOON 
    17  08:03  Mars 5.8°S of Pollux
    18  16:26  Moon at Perigee: 362265 km
    20  16:45  FULL MOON 
    24  12     Mercury at Superior Conjunction 
    25  23:19  Moon at Descending Node 
    26  15     Neptune at Opposition 
    28  00:35  LAST QUARTER MOON 
    28  10:32  Aldebaran 2.9°S of Moon
    30  14:46  Moon at Apogee: 404883 km
    31  07:38  Jupiter 4.5°N of Moon

Sep 05  02:36  NEW MOON 
    05  15:37  Venus 1.5°N of Spica
    08  01:00  Mars 0.5°S of Beehive
    08  05:11  Spica 0.8°S of Moon
    08  12:04  Venus 0.4°N of Moon: Occn.
    09  08:29  Moon at Ascending Node 
    09  08:29  Saturn 2.3°N of Moon
    12  08:08  FIRST QUARTER MOON 
    15  07:34  Moon at Perigee: 367388 km
    19  02:13  FULL MOON 
    22  04:48  Moon at Descending Node 
    22  11:44  Autumnal Equinox 
    24  13:29  Mercury 0.7°N of Spica
    24  18:39  Aldebaran 2.7°S of Moon
    26  18:56  LAST QUARTER MOON 
    27  09:17  Moon at Apogee: 404309 km
    28  00:05  Jupiter 4.9°N of Moon

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

Nov 01  00     Venus at Greatest Elong: 47.1°E
    01  11     Mercury at Inferior Conjunction 
    02  21:52  Moon at Ascending Node 
    03  03:46  Hybrid Solar Eclipse; mag=1.016
    03  03:50  NEW MOON 
    05  02     S Taurid Meteor Shower
    06  00:28  Moon at Perigee: 365362 km
    06  02     Saturn in Conjunction with Sun 
    07  15     Mercury at Perihelion 
    08  06:08  Jupiter 6.1°S of Pollux
    09  20:57  FIRST QUARTER MOON 
    12  01     N Taurid Meteor Shower
    15  20:30  Moon at Descending Node 
    17  06:16  FULL MOON 
    17  07     Leonid Meteor Shower
    17  17     Mercury at Greatest Elong: 19.5°W
    18  11:00  Aldebaran 2.7°S of Moon
    21  20:21  Jupiter 5.1°N of Moon
    22  00:50  Moon at Apogee: 405446 km
    25  06:45  Regulus 5.6°N of Moon
    25  10:28  LAST QUARTER MOON 
    25  20     Mercury 0.3° of Saturn
    27  07:10  Mars 5.7°N of Moon
    29  07:43  Spica 0.9°S of Moon
    30  07:59  Moon at Ascending Node 

Dec 01  01:13  Saturn 1.2°N of Moon: Occn.
    02  15:22  NEW MOON 
    04  01:15  Moon at Perigee: 360065 km
    09  06:12  FIRST QUARTER MOON 
    13  01:10  Moon at Descending Node 
    13  20     Geminid Meteor Shower
    15  17:45  Aldebaran 2.7°S of Moon
    17  00:28  FULL MOON 
    18  22:11  Jupiter 5.0°N of Moon
    19  14:49  Moon at Apogee: 406269 km
    21  08:11  Winter Solstice 
    21  15     Mercury at Aphelion 
    22  05     Ursid Meteor Shower
    22  13:47  Regulus 5.4°N of Moon
    25  04:48  LAST QUARTER MOON 
    25  17:45  Mars 4.6°N of Moon
    26  17:10  Spica 1.0°S of Moon
    27  15:21  Moon at Ascending Node 
    28  16:42  Saturn 0.9°N of Moon: Occn.
    28  21     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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