2013 Calendar of Astronomical Events




    


2013 Phases of the Moon

Hawaiian 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
Hawaiian Standard Time
New Moon First Quarter Full Moon Last Quarter
--- Jan 4 17:58
Jan 11 09:44 Jan 18 13:45 Jan 26 18:38 Feb 3 03:56
Feb 9 21:20 Feb 17 10:31 Feb 25 10:26 Mar 4 11:53
Mar 11 09:51 Mar 19 07:27 Mar 26 23:27 Apr 2 18:37
Apr 9 23:35 Apr 18 02:31 Apr 25 09:57 p May 2 01:14
May 9 14:29 A May 17 18:35 May 24 18:25 n May 31 08:58
Jun 8 05:56 Jun 16 07:24 Jun 23 01:32 Jun 29 18:54
Jul 7 21:14 Jul 15 17:18 Jul 22 08:15 Jul 29 07:43
Aug 6 11:51 Aug 14 00:56 Aug 20 15:45 Aug 27 23:35
Sep 5 01:36 Sep 12 07:08 Sep 19 01:13 Sep 26 17:56
Oct 4 14:35 Oct 11 13:02 Oct 18 13:38 n Oct 26 13:41
Nov 3 02:50 H Nov 9 19:57 Nov 17 05:16 Nov 25 09:28
Dec 2 14:22 Dec 9 05:12 Dec 16 23:28 Dec 25 03:48

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

Hawaiian 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     HST   Event
        (h:m)

Jan 01  11:13  Regulus 5.9°N of Moon
    01  19     Earth at Perihelion: 0.98329 AU
    03  04     Quadrantid Meteor Shower
    03  17     Mercury at Aphelion 
    04  17:58  LAST QUARTER MOON 
    05  09:54  Spica 0.6°N of Moon
    06  15:28  Saturn 3.7°N of Moon
    07  13:50  Moon at Ascending Node 
    08  12:55  Antares 5.9°S of Moon
    10  00:26  Moon at Perigee: 360048 km
    10  01:36  Venus 2.8°S of Moon
    11  09:44  NEW MOON 
    17  23     Mercury at Superior Conjunction 
    18  13:45  FIRST QUARTER MOON 
    20  15:19  Moon at Descending Node 
    21  16:57  Jupiter 0.5°N of Moon: Occn.
    22  00:52  Moon at Apogee: 405313 km
    22  01:13  Aldebaran 4.0°S of Moon
    24  02     Mars at Perihelion 
    26  18:38  FULL MOON 
    28  16:57  Regulus 5.8°N of Moon

Feb 01  15:25  Spica 0.3°N of Moon
    02  23:55  Saturn 3.5°N of Moon
    03  03:56  LAST QUARTER MOON 
    03  16:14  Moon at Ascending Node 
    04  20:39  Antares 6.1°S of Moon
    07  02:09  Moon at Perigee: 365314 km
    08  06     Mercury 0.3° of Mars
    09  21:20  NEW MOON 
    11  07:51  Mercury 5.2°S of Moon
    16  11     Mercury at Greatest Elong: 18.1°E
    16  16     Mercury at Perihelion 
    16  16:57  Moon at Descending Node 
    17  10:31  FIRST QUARTER MOON 
    18  01:31  Jupiter 0.9°N of Moon: Occn.
    18  08:49  Aldebaran 3.8°S of Moon
    18  20:30  Moon at Apogee: 404475 km
    20  16     Venus at Aphelion 
    20  21     Neptune in Conjunction with Sun 
    25  00:18  Regulus 5.7°N of Moon
    25  10:26  FULL MOON 
    25  12     Mercury 4.1° of Mars
    28  20:56  Spica 0.1°N of Moon

Mar 02  05:21  Saturn 3.3°N of Moon
    02  16:30  Moon at Ascending Node 
    04  02:11  Antares 6.4°S of Moon
    04  03     Mercury at Inferior Conjunction 
    04  11:53  LAST QUARTER MOON 
    05  13:20  Moon at Perigee: 369954 km
    11  09:51  NEW MOON 
    15  20:15  Moon at Descending Node 
    17  15:16  Jupiter 1.5°N of Moon
    17  15:24  Jupiter 5.0°N of Aldebaran
    17  16:56  Aldebaran 3.5°S of Moon
    18  17:13  Moon at Apogee: 404262 km
    19  07:27  FIRST QUARTER MOON 
    20  01:02  Vernal Equinox 
    24  09:17  Regulus 5.8°N of Moon
    26  23:27  FULL MOON 
    28  04:29  Spica 0.0°N of Moon
    28  07     Venus at Superior Conjunction 
    28  14     Uranus in Conjunction with Sun 
    29  10:18  Saturn 3.3°N of Moon
    29  19:55  Moon at Ascending Node 
    30  17:55  Moon at Perigee: 367494 km
    31  12     Mercury at Greatest Elong: 27.8°W

Apr 02  18:37  LAST QUARTER MOON 
    09  23:35  NEW MOON 
    12  02:12  Moon at Descending Node 
    14  00:51  Aldebaran 3.4°S of Moon
    14  08:23  Jupiter 2.1°N of Moon
    15  12:21  Moon at Apogee: 404865 km
    17  14     Mars in Conjunction with Sun 
    18  02:31  FIRST QUARTER MOON 
    20  18:44  Regulus 5.9°N of Moon
    22  01     Lyrid Meteor Shower
    24  14:10  Spica 0.0°N of Moon
    25  09:57  FULL MOON 
    25  10:07  Partial Lunar Eclipse; mag=0.015
    25  16:28  Saturn 3.5°N of Moon
    26  04:07  Moon at Ascending Node 
    27  09:48  Moon at Perigee: 362268 km
    27  22     Saturn at Opposition 

May 02  01:14  LAST QUARTER MOON 
    04  14     Eta-Aquarid Meteor Shower
    09  09:12  Moon at Descending Node 
    09  14:25  Annular Solar Eclipse; mag=0.954
    09  14:29  NEW MOON 
    11  11     Mercury at Superior Conjunction 
    12  03:03  Jupiter 2.6°N of Moon
    13  03:31  Moon at Apogee: 405827 km
    15  16     Mercury at Perihelion 
    17  18:35  FIRST QUARTER MOON 
    18  03:14  Regulus 5.9°N of Moon
    22  00:35  Spica 0.0°N of Moon
    22  23:55  Saturn 3.7°N of Moon
    23  14:40  Moon at Ascending Node 
    24  11     Mercury 1.4° of Venus
    24  18:10  Pen. Lunar Eclipse; mag=0.016
    24  18:25  FULL MOON 
    25  01:45  Antares 6.6°S of Moon
    25  15:45  Moon at Perigee: 358375 km
    26  20     Mercury 2.4° of Jupiter
    31  08:58  LAST QUARTER MOON 

Jun 05  14:59  Moon at Descending Node 
    08  05:56  NEW MOON 
    09  11:40  Moon at Apogee: 406487 km
    10  01:19  Venus 5.3°N of Moon
    12  07     Mercury at Greatest Elong: 24.3°E
    13  01     Venus at Perihelion 
    14  10:06  Regulus 5.8°N of Moon
    16  07:24  FIRST QUARTER MOON 
    18  02:57  Mercury 6.1°S of Pollux
    18  09:56  Spica 0.1°S of Moon
    19  05     Jupiter in Conjunction with Sun 
    19  07:45  Saturn 3.6°N of Moon
    19  21     Mercury 1.9° of Venus
    19  23:51  Moon at Ascending Node 
    20  19:04  Summer Solstice 
    21  18:49  Venus 5.1°S of Pollux
    23  01:09  Moon at Perigee: 356990 km
    23  01:32  FULL MOON 
    28  15     Mercury at Aphelion 
    29  18:54  LAST QUARTER MOON 

Date     HST   Event
        (h:m)

Jul 02  18:15  Moon at Descending Node 
    03  05:26  Venus 0.1°N of Beehive
    04  20:09  Aldebaran 3.4°S of Moon
    05  05     Earth at Aphelion: 1.01671 AU
    06  14:36  Moon at Apogee: 406493 km
    07  21:14  NEW MOON 
    09  09     Mercury at Inferior Conjunction 
    11  15:45  Regulus 5.7°N of Moon
    15  17:13  Spica 0.3°S of Moon
    15  17:18  FIRST QUARTER MOON 
    16  15:19  Saturn 3.3°N of Moon
    17  04:58  Moon at Ascending Node 
    21  10:27  Moon at Perigee: 358402 km
    21  23:30  Venus 1.0°N of Regulus
    22  08:15  FULL MOON 
    27  16     Delta-Aquarid Meteor Shower
    28  09     Mercury 6.9° of Mars
    29  07:43  LAST QUARTER MOON 
    29  19:50  Moon at Descending Node 
    29  23     Mercury at Greatest Elong: 19.6°W

Aug 01  02:22  Aldebaran 3.2°S of Moon
    02  22:53  Moon at Apogee: 405834 km
    03  12:22  Jupiter 4.0°N of Moon
    04  12:31  Mercury 7.3°S of Pollux
    04  22:39  Mercury 4.4°N of Moon
    06  11:51  NEW MOON 
    09  16:19  Venus 5.1°N of Moon
    11  15     Mercury at Perihelion 
    11  22:46  Spica 0.6°S of Moon
    12  08     Perseid Meteor Shower
    12  22:51  Saturn 2.8°N of Moon
    13  06:20  Moon at Ascending Node 
    14  00:56  FIRST QUARTER MOON 
    17  07:03  Mars 5.8°S of Pollux
    18  15:26  Moon at Perigee: 362265 km
    20  15:45  FULL MOON 
    24  11     Mercury at Superior Conjunction 
    25  22:19  Moon at Descending Node 
    26  14     Neptune at Opposition 
    27  23:35  LAST QUARTER MOON 
    28  09:32  Aldebaran 2.9°S of Moon
    30  13:46  Moon at Apogee: 404883 km
    31  06:38  Jupiter 4.5°N of Moon

Sep 05  01:36  NEW MOON 
    05  14:37  Venus 1.5°N of Spica
    08  00:00  Mars 0.5°S of Beehive
    08  04:11  Spica 0.8°S of Moon
    08  11:04  Venus 0.4°N of Moon: Occn.
    09  07:29  Moon at Ascending Node 
    09  07:29  Saturn 2.3°N of Moon
    12  07:08  FIRST QUARTER MOON 
    15  06:34  Moon at Perigee: 367388 km
    19  01:13  FULL MOON 
    22  03:48  Moon at Descending Node 
    22  10:44  Autumnal Equinox 
    24  12:29  Mercury 0.7°N of Spica
    24  17:39  Aldebaran 2.7°S of Moon
    26  17:56  LAST QUARTER MOON 
    27  08:17  Moon at Apogee: 404309 km
    27  23:05  Jupiter 4.9°N of Moon

Oct 01  12:19  Regulus 5.6°N of Moon
    03  03     Uranus at Opposition 
    03  09     Venus at Aphelion 
    04  14:35  NEW MOON 
    06  12:08  Moon at Ascending Node 
    06  12:28  Mercury 2.8°S of Moon
    06  18:30  Saturn 1.9°N of Moon
    08  02:07  Venus 4.7°S of Moon
    08  03     Mercury 5.0° of Saturn
    09  00     Mercury at Greatest Elong: 25.3°E
    10  13:06  Moon at Perigee: 369813 km
    11  13:02  FIRST QUARTER MOON 
    14  17:51  Mars 0.9°N of Regulus
    16  08:26  Venus 1.5°N of Antares
    18  13:38  FULL MOON 
    18  13:50  Pen. Lunar Eclipse; mag=0.765
    19  11:47  Moon at Descending Node 
    21  00     Orionid Meteor Shower
    22  02:06  Aldebaran 2.7°S of Moon
    25  04:25  Moon at Apogee: 404561 km
    25  11:55  Jupiter 5.1°N of Moon
    26  13:41  LAST QUARTER MOON 
    28  21:17  Regulus 5.7°N of Moon
    31  23     Venus at Greatest Elong: 47.1°E

Nov 01  10     Mercury at Inferior Conjunction 
    02  20:52  Moon at Ascending Node 
    03  02:46  Hybrid Solar Eclipse; mag=1.016
    03  02:50  NEW MOON 
    05  01     S Taurid Meteor Shower
    05  23:28  Moon at Perigee: 365362 km
    06  01     Saturn in Conjunction with Sun 
    07  14     Mercury at Perihelion 
    08  05:08  Jupiter 6.1°S of Pollux
    09  19:57  FIRST QUARTER MOON 
    12  00     N Taurid Meteor Shower
    15  19:30  Moon at Descending Node 
    17  05:16  FULL MOON 
    17  06     Leonid Meteor Shower
    17  16     Mercury at Greatest Elong: 19.5°W
    18  10:00  Aldebaran 2.7°S of Moon
    21  19:21  Jupiter 5.1°N of Moon
    21  23:50  Moon at Apogee: 405446 km
    25  05:45  Regulus 5.6°N of Moon
    25  09:28  LAST QUARTER MOON 
    25  19     Mercury 0.3° of Saturn
    27  06:10  Mars 5.7°N of Moon
    29  06:43  Spica 0.9°S of Moon
    30  06:59  Moon at Ascending Node 

Dec 01  00:13  Saturn 1.2°N of Moon: Occn.
    02  14:22  NEW MOON 
    04  00:15  Moon at Perigee: 360065 km
    09  05:12  FIRST QUARTER MOON 
    13  00:10  Moon at Descending Node 
    13  19     Geminid Meteor Shower
    15  16:45  Aldebaran 2.7°S of Moon
    16  23:28  FULL MOON 
    18  21:11  Jupiter 5.0°N of Moon
    19  13:49  Moon at Apogee: 406269 km
    21  07:11  Winter Solstice 
    21  14     Mercury at Aphelion 
    22  04     Ursid Meteor Shower
    22  12:47  Regulus 5.4°N of Moon
    25  03:48  LAST QUARTER MOON 
    25  16:45  Mars 4.6°N of Moon
    26  16:10  Spica 1.0°S of Moon
    27  14:21  Moon at Ascending Node 
    28  15:42  Saturn 0.9°N of Moon: Occn.
    28  20     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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