2013 Calendar of Astronomical Events




    


2013 Phases of the Moon

Pacific 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
Pacific Standard Time
New Moon First Quarter Full Moon Last Quarter
--- Jan 4 19:58
Jan 11 11:44 Jan 18 15:45 Jan 26 20:38 Feb 3 05:56
Feb 9 23:20 Feb 17 12:31 Feb 25 12:26 Mar 4 13:53
Mar 11 11:51 Mar 19 09:27 Mar 27 01:27 Apr 2 20:37
Apr 10 01:35 Apr 18 04:31 Apr 25 11:57 p May 2 03:14
May 9 16:29 A May 17 20:35 May 24 20:25 n May 31 10:58
Jun 8 07:56 Jun 16 09:24 Jun 23 03:32 Jun 29 20:54
Jul 7 23:14 Jul 15 19:18 Jul 22 10:15 Jul 29 09:43
Aug 6 13:51 Aug 14 02:56 Aug 20 17:45 Aug 28 01:35
Sep 5 03:36 Sep 12 09:08 Sep 19 03:13 Sep 26 19:56
Oct 4 16:35 Oct 11 15:02 Oct 18 15:38 n Oct 26 15:41
Nov 3 04:50 H Nov 9 21:57 Nov 17 07:16 Nov 25 11:28
Dec 2 16:22 Dec 9 07:12 Dec 17 01:28 Dec 25 05:48

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

Pacific 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     PST   Event
        (h:m)

Jan 01  13:13  Regulus 5.9°N of Moon
    01  21     Earth at Perihelion: 0.98329 AU
    03  06     Quadrantid Meteor Shower
    03  19     Mercury at Aphelion 
    04  19:58  LAST QUARTER MOON 
    05  11:54  Spica 0.6°N of Moon
    06  17:28  Saturn 3.7°N of Moon
    07  15:50  Moon at Ascending Node 
    08  14:55  Antares 5.9°S of Moon
    10  02:26  Moon at Perigee: 360048 km
    10  03:36  Venus 2.8°S of Moon
    11  11:44  NEW MOON 
    18  01     Mercury at Superior Conjunction 
    18  15:45  FIRST QUARTER MOON 
    20  17:19  Moon at Descending Node 
    21  18:57  Jupiter 0.5°N of Moon: Occn.
    22  02:52  Moon at Apogee: 405313 km
    22  03:13  Aldebaran 4.0°S of Moon
    24  04     Mars at Perihelion 
    26  20:38  FULL MOON 
    28  18:57  Regulus 5.8°N of Moon

Feb 01  17:25  Spica 0.3°N of Moon
    03  01:55  Saturn 3.5°N of Moon
    03  05:56  LAST QUARTER MOON 
    03  18:14  Moon at Ascending Node 
    04  22:39  Antares 6.1°S of Moon
    07  04:09  Moon at Perigee: 365314 km
    08  08     Mercury 0.3° of Mars
    09  23:20  NEW MOON 
    11  09:51  Mercury 5.2°S of Moon
    16  13     Mercury at Greatest Elong: 18.1°E
    16  18     Mercury at Perihelion 
    16  18:57  Moon at Descending Node 
    17  12:31  FIRST QUARTER MOON 
    18  03:31  Jupiter 0.9°N of Moon: Occn.
    18  10:49  Aldebaran 3.8°S of Moon
    18  22:30  Moon at Apogee: 404475 km
    20  18     Venus at Aphelion 
    20  23     Neptune in Conjunction with Sun 
    25  02:18  Regulus 5.7°N of Moon
    25  12:26  FULL MOON 
    25  14     Mercury 4.1° of Mars
    28  22:56  Spica 0.1°N of Moon

Mar 02  07:21  Saturn 3.3°N of Moon
    02  18:30  Moon at Ascending Node 
    04  04:11  Antares 6.4°S of Moon
    04  05     Mercury at Inferior Conjunction 
    04  13:53  LAST QUARTER MOON 
    05  15:20  Moon at Perigee: 369954 km
    11  11:51  NEW MOON 
    15  22:15  Moon at Descending Node 
    17  17:16  Jupiter 1.5°N of Moon
    17  17:24  Jupiter 5.0°N of Aldebaran
    17  18:56  Aldebaran 3.5°S of Moon
    18  19:13  Moon at Apogee: 404262 km
    19  09:27  FIRST QUARTER MOON 
    20  03:02  Vernal Equinox 
    24  11:17  Regulus 5.8°N of Moon
    27  01:27  FULL MOON 
    28  06:29  Spica 0.0°N of Moon
    28  09     Venus at Superior Conjunction 
    28  16     Uranus in Conjunction with Sun 
    29  12:18  Saturn 3.3°N of Moon
    29  21:55  Moon at Ascending Node 
    30  19:55  Moon at Perigee: 367494 km
    31  14     Mercury at Greatest Elong: 27.8°W

Apr 02  20:37  LAST QUARTER MOON 
    10  01:35  NEW MOON 
    12  04:12  Moon at Descending Node 
    14  02:51  Aldebaran 3.4°S of Moon
    14  10:23  Jupiter 2.1°N of Moon
    15  14:21  Moon at Apogee: 404865 km
    17  16     Mars in Conjunction with Sun 
    18  04:31  FIRST QUARTER MOON 
    20  20:44  Regulus 5.9°N of Moon
    22  03     Lyrid Meteor Shower
    24  16:10  Spica 0.0°N of Moon
    25  11:57  FULL MOON 
    25  12:07  Partial Lunar Eclipse; mag=0.015
    25  18:28  Saturn 3.5°N of Moon
    26  06:07  Moon at Ascending Node 
    27  11:48  Moon at Perigee: 362268 km
    28  00     Saturn at Opposition 

May 02  03:14  LAST QUARTER MOON 
    04  16     Eta-Aquarid Meteor Shower
    09  11:12  Moon at Descending Node 
    09  16:25  Annular Solar Eclipse; mag=0.954
    09  16:29  NEW MOON 
    11  13     Mercury at Superior Conjunction 
    12  05:03  Jupiter 2.6°N of Moon
    13  05:31  Moon at Apogee: 405827 km
    15  18     Mercury at Perihelion 
    17  20:35  FIRST QUARTER MOON 
    18  05:14  Regulus 5.9°N of Moon
    22  02:35  Spica 0.0°N of Moon
    23  01:55  Saturn 3.7°N of Moon
    23  16:40  Moon at Ascending Node 
    24  13     Mercury 1.4° of Venus
    24  20:10  Pen. Lunar Eclipse; mag=0.016
    24  20:25  FULL MOON 
    25  03:45  Antares 6.6°S of Moon
    25  17:45  Moon at Perigee: 358375 km
    26  22     Mercury 2.4° of Jupiter
    31  10:58  LAST QUARTER MOON 

Jun 05  16:59  Moon at Descending Node 
    08  07:56  NEW MOON 
    09  13:40  Moon at Apogee: 406487 km
    10  03:19  Venus 5.3°N of Moon
    12  09     Mercury at Greatest Elong: 24.3°E
    13  03     Venus at Perihelion 
    14  12:06  Regulus 5.8°N of Moon
    16  09:24  FIRST QUARTER MOON 
    18  04:57  Mercury 6.1°S of Pollux
    18  11:56  Spica 0.1°S of Moon
    19  07     Jupiter in Conjunction with Sun 
    19  09:45  Saturn 3.6°N of Moon
    19  23     Mercury 1.9° of Venus
    20  01:51  Moon at Ascending Node 
    20  21:04  Summer Solstice 
    21  20:49  Venus 5.1°S of Pollux
    23  03:09  Moon at Perigee: 356990 km
    23  03:32  FULL MOON 
    28  17     Mercury at Aphelion 
    29  20:54  LAST QUARTER MOON 

Date     PST   Event
        (h:m)

Jul 02  20:15  Moon at Descending Node 
    03  07:26  Venus 0.1°N of Beehive
    04  22:09  Aldebaran 3.4°S of Moon
    05  07     Earth at Aphelion: 1.01671 AU
    06  16:36  Moon at Apogee: 406493 km
    07  23:14  NEW MOON 
    09  11     Mercury at Inferior Conjunction 
    11  17:45  Regulus 5.7°N of Moon
    15  19:13  Spica 0.3°S of Moon
    15  19:18  FIRST QUARTER MOON 
    16  17:19  Saturn 3.3°N of Moon
    17  06:58  Moon at Ascending Node 
    21  12:27  Moon at Perigee: 358402 km
    22  01:30  Venus 1.0°N of Regulus
    22  10:15  FULL MOON 
    27  18     Delta-Aquarid Meteor Shower
    28  11     Mercury 6.9° of Mars
    29  09:43  LAST QUARTER MOON 
    29  21:50  Moon at Descending Node 
    30  01     Mercury at Greatest Elong: 19.6°W

Aug 01  04:22  Aldebaran 3.2°S of Moon
    03  00:53  Moon at Apogee: 405834 km
    03  14:22  Jupiter 4.0°N of Moon
    04  14:31  Mercury 7.3°S of Pollux
    05  00:39  Mercury 4.4°N of Moon
    06  13:51  NEW MOON 
    09  18:19  Venus 5.1°N of Moon
    11  17     Mercury at Perihelion 
    12  00:46  Spica 0.6°S of Moon
    12  10     Perseid Meteor Shower
    13  00:51  Saturn 2.8°N of Moon
    13  08:20  Moon at Ascending Node 
    14  02:56  FIRST QUARTER MOON 
    17  09:03  Mars 5.8°S of Pollux
    18  17:26  Moon at Perigee: 362265 km
    20  17:45  FULL MOON 
    24  13     Mercury at Superior Conjunction 
    26  00:19  Moon at Descending Node 
    26  16     Neptune at Opposition 
    28  01:35  LAST QUARTER MOON 
    28  11:32  Aldebaran 2.9°S of Moon
    30  15:46  Moon at Apogee: 404883 km
    31  08:38  Jupiter 4.5°N of Moon

Sep 05  03:36  NEW MOON 
    05  16:37  Venus 1.5°N of Spica
    08  02:00  Mars 0.5°S of Beehive
    08  06:11  Spica 0.8°S of Moon
    08  13:04  Venus 0.4°N of Moon: Occn.
    09  09:29  Moon at Ascending Node 
    09  09:29  Saturn 2.3°N of Moon
    12  09:08  FIRST QUARTER MOON 
    15  08:34  Moon at Perigee: 367388 km
    19  03:13  FULL MOON 
    22  05:48  Moon at Descending Node 
    22  12:44  Autumnal Equinox 
    24  14:29  Mercury 0.7°N of Spica
    24  19:39  Aldebaran 2.7°S of Moon
    26  19:56  LAST QUARTER MOON 
    27  10:17  Moon at Apogee: 404309 km
    28  01:05  Jupiter 4.9°N of Moon

Oct 01  14:19  Regulus 5.6°N of Moon
    03  05     Uranus at Opposition 
    03  11     Venus at Aphelion 
    04  16:35  NEW MOON 
    06  14:08  Moon at Ascending Node 
    06  14:28  Mercury 2.8°S of Moon
    06  20:30  Saturn 1.9°N of Moon
    08  04:07  Venus 4.7°S of Moon
    08  05     Mercury 5.0° of Saturn
    09  02     Mercury at Greatest Elong: 25.3°E
    10  15:06  Moon at Perigee: 369813 km
    11  15:02  FIRST QUARTER MOON 
    14  19:51  Mars 0.9°N of Regulus
    16  10:26  Venus 1.5°N of Antares
    18  15:38  FULL MOON 
    18  15:50  Pen. Lunar Eclipse; mag=0.765
    19  13:47  Moon at Descending Node 
    21  02     Orionid Meteor Shower
    22  04:06  Aldebaran 2.7°S of Moon
    25  06:25  Moon at Apogee: 404561 km
    25  13:55  Jupiter 5.1°N of Moon
    26  15:41  LAST QUARTER MOON 
    28  23:17  Regulus 5.7°N of Moon

Nov 01  01     Venus at Greatest Elong: 47.1°E
    01  12     Mercury at Inferior Conjunction 
    02  22:52  Moon at Ascending Node 
    03  04:46  Hybrid Solar Eclipse; mag=1.016
    03  04:50  NEW MOON 
    05  03     S Taurid Meteor Shower
    06  01:28  Moon at Perigee: 365362 km
    06  03     Saturn in Conjunction with Sun 
    07  16     Mercury at Perihelion 
    08  07:08  Jupiter 6.1°S of Pollux
    09  21:57  FIRST QUARTER MOON 
    12  02     N Taurid Meteor Shower
    15  21:30  Moon at Descending Node 
    17  07:16  FULL MOON 
    17  08     Leonid Meteor Shower
    17  18     Mercury at Greatest Elong: 19.5°W
    18  12:00  Aldebaran 2.7°S of Moon
    21  21:21  Jupiter 5.1°N of Moon
    22  01:50  Moon at Apogee: 405446 km
    25  07:45  Regulus 5.6°N of Moon
    25  11:28  LAST QUARTER MOON 
    25  21     Mercury 0.3° of Saturn
    27  08:10  Mars 5.7°N of Moon
    29  08:43  Spica 0.9°S of Moon
    30  08:59  Moon at Ascending Node 

Dec 01  02:13  Saturn 1.2°N of Moon: Occn.
    02  16:22  NEW MOON 
    04  02:15  Moon at Perigee: 360065 km
    09  07:12  FIRST QUARTER MOON 
    13  02:10  Moon at Descending Node 
    13  21     Geminid Meteor Shower
    15  18:45  Aldebaran 2.7°S of Moon
    17  01:28  FULL MOON 
    18  23:11  Jupiter 5.0°N of Moon
    19  15:49  Moon at Apogee: 406269 km
    21  09:11  Winter Solstice 
    21  16     Mercury at Aphelion 
    22  06     Ursid Meteor Shower
    22  14:47  Regulus 5.4°N of Moon
    25  05:48  LAST QUARTER MOON 
    25  18:45  Mars 4.6°N of Moon
    26  18:10  Spica 1.0°S of Moon
    27  16:21  Moon at Ascending Node 
    28  17:42  Saturn 0.9°N of Moon: Occn.
    28  22     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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