2013 Sky Event Almanac

Mountain Standard Time

The following table gives the date and time of the important astronomical events for the year. The times listed are for Mountain Standard Time (Coordinated Universal Time − 7 hours) . This time zone may have different names in different countries. If Daylight Saving Time is in effect, add one hour to the times listed. A key to astronomical terms appears below the almanac.

2013 Sky Event Almanac
Mountain Standard Time
January - June July - December
Date     MST   Event
        (h:m)

Jan 01  22     Earth at Perihelion: 0.98329 AU
    03  07     Quadrantid Meteor Shower
    03  20     Mercury at Aphelion 
    04  20:58  LAST QUARTER MOON 
    05  12:54  Spica 0.6°N of Moon
    06  18:28  Saturn 3.7°N of Moon
    07  16:50  Moon at Ascending Node 
    10  03:26  Moon at Perigee: 360048 km
    10  04:36  Venus 2.8°S of Moon
    11  12:44  NEW MOON 
    18  02     Mercury at Superior Conjunction 
    18  16:45  FIRST QUARTER MOON 
    20  18:19  Moon at Descending Node 
    21  19:57  Jupiter 0.5°N of Moon: Occn.
    22  03:52  Moon at Apogee: 405313 km
    22  04:13  Aldebaran 4.0°S of Moon
    24  02     Mars at Perihelion:  1.38149 AU
    26  21:38  FULL MOON 

Feb 01  18:25  Spica 0.3°N of Moon
    03  02:55  Saturn 3.5°N of Moon
    03  06:56  LAST QUARTER MOON 
    03  19:14  Moon at Ascending Node 
    07  05:09  Moon at Perigee: 365314 km
    08  09     Mercury 0.3°N of Mars
    10  00:20  NEW MOON 
    16  14     Mercury at Greatest Elong: 18.1°E
    16  19     Mercury at Perihelion 
    16  19:57  Moon at Descending Node 
    17  13:31  FIRST QUARTER MOON 
    18  04:31  Jupiter 0.9°N of Moon: Occn.
    18  11:49  Aldebaran 3.8°S of Moon
    18  23:30  Moon at Apogee: 404475 km
    20  19     Venus at Aphelion 
    21  00     Neptune in Conjunction with Sun 
    25  13:26  FULL MOON 
    28  23:56  Spica 0.1°N of Moon

Mar 02  08:21  Saturn 3.3°N of Moon
    02  19:30  Moon at Ascending Node 
    04  06     Mercury at Inferior Conjunction 
    04  14:53  LAST QUARTER MOON 
    05  16:20  Moon at Perigee: 369954 km
    11  12:51  NEW MOON 
    15  23:15  Moon at Descending Node 
    17  18:16  Jupiter 1.5°N of Moon
    17  19:56  Aldebaran 3.5°S of Moon
    18  20:13  Moon at Apogee: 404262 km
    19  10:27  FIRST QUARTER MOON 
    20  04:02  Vernal Equinox 
    27  02:27  FULL MOON 
    28  07:29  Spica 0.0°N of Moon
    28  10     Venus at Superior Conjunction 
    28  17     Uranus in Conjunction with Sun 
    29  13:18  Saturn 3.3°N of Moon
    29  22:55  Moon at Ascending Node 
    30  20:55  Moon at Perigee: 367494 km
    31  15     Mercury at Greatest Elong: 27.8°W

Apr 02  21:37  LAST QUARTER MOON 
    10  02:35  NEW MOON 
    12  05:12  Moon at Descending Node 
    14  03:51  Aldebaran 3.4°S of Moon
    14  11:23  Jupiter 2.1°N of Moon
    15  15:21  Moon at Apogee: 404865 km
    17  17     Mars in Conjunction with Sun 
    18  05:31  FIRST QUARTER MOON 
    22  04     Lyrid Meteor Shower
    24  17:10  Spica 0.0°N of Moon
    25  12:57  FULL MOON 
    25  13:07  Partial Lunar Eclipse; mag=0.015
    25  19:28  Saturn 3.5°N of Moon
    26  07:07  Moon at Ascending Node 
    27  12:48  Moon at Perigee: 362268 km
    28  01     Saturn at Opposition 

May 02  04:14  LAST QUARTER MOON 
    04  17     Eta-Aquarid Meteor Shower
    09  12:12  Moon at Descending Node 
    09  17:25  Annular Solar Eclipse; mag=0.954
    09  17:29  NEW MOON 
    11  11:00  Aldebaran 3.4°S of Moon
    11  14     Mercury at Superior Conjunction 
    12  06:03  Jupiter 2.6°N of Moon
    13  06:31  Moon at Apogee: 405827 km
    15  19     Mercury at Perihelion 
    17  21:35  FIRST QUARTER MOON 
    22  03:35  Spica 0.0°N of Moon
    23  02:55  Saturn 3.7°N of Moon
    23  17:40  Moon at Ascending Node 
    24  21:10  Pen. Lunar Eclipse; mag=0.016
    24  21:25  FULL MOON 
    25  18:45  Moon at Perigee: 358375 km
    26  23     Mercury 2.4°N of Jupiter
    28  10     Venus 1.0°N of Jupiter
    31  11:58  LAST QUARTER MOON 

Jun 05  17:59  Moon at Descending Node 
    08  08:56  NEW MOON 
    09  14:40  Moon at Apogee: 406487 km
    12  10     Mercury at Greatest Elong: 24.3°E
    13  04     Venus at Perihelion 
    16  10:24  FIRST QUARTER MOON 
    18  12:56  Spica 0.1°S of Moon
    19  08     Jupiter in Conjunction with Sun 
    19  10:45  Saturn 3.6°N of Moon
    20  00     Mercury 1.9°S of Venus
    20  02:51  Moon at Ascending Node 
    20  22:04  Summer Solstice 
    23  04:09  Moon at Perigee: 356990 km
    23  04:32  FULL MOON 
    28  18     Mercury at Aphelion 
    29  21:54  LAST QUARTER MOON 

Date     MST   Event
        (h:m)

Jul 02  21:15  Moon at Descending Node 
    04  23:09  Aldebaran 3.4°S of Moon
    05  08     Earth at Aphelion: 1.01671 AU
    06  05:13  Mars 3.7°N of Moon
    06  17:36  Moon at Apogee: 406493 km
    08  00:14  NEW MOON 
    09  12     Mercury at Inferior Conjunction 
    15  20:13  Spica 0.3°S of Moon
    15  20:18  FIRST QUARTER MOON 
    16  18:19  Saturn 3.3°N of Moon
    17  07:58  Moon at Ascending Node 
    21  13:27  Moon at Perigee: 358402 km
    21  22     Mars 0.8°N of Jupiter
    22  02:30  Venus 1.0°N of Regulus
    22  11:15  FULL MOON 
    27  19     Delta-Aquarid Meteor Shower
    29  10:43  LAST QUARTER MOON 
    29  22:50  Moon at Descending Node 
    30  02     Mercury at Greatest Elong: 19.6°W

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

Sep 05  04:36  NEW MOON 
    05  17:37  Venus 1.5°N of Spica
    08  07:11  Spica 0.8°S of Moon
    08  14:04  Venus 0.4°N of Moon: Occn.
    09  10:29  Moon at Ascending Node 
    09  10:29  Saturn 2.3°N of Moon
    12  10:08  FIRST QUARTER MOON 
    15  09:34  Moon at Perigee: 367388 km
    18  13     Venus 3.5°S of Saturn
    19  04:13  FULL MOON 
    22  06:48  Moon at Descending Node 
    22  13:44  Autumnal Equinox 
    24  15:29  Mercury 0.7°N of Spica
    24  20:39  Aldebaran 2.7°S of Moon
    26  20:56  LAST QUARTER MOON 
    27  11:17  Moon at Apogee: 404309 km

Oct 03  06     Uranus at Opposition 
    03  12     Venus at Aphelion 
    04  17:35  NEW MOON 
    06  15:08  Moon at Ascending Node 
    06  15:28  Mercury 2.8°S of Moon
    06  21:30  Saturn 1.9°N of Moon
    08  05:07  Venus 4.7°S of Moon
    08  06     Mercury 5.0°S of Saturn
    09  03     Mercury at Greatest Elong: 25.3°E
    10  16:06  Moon at Perigee: 369813 km
    11  16:02  FIRST QUARTER MOON 
    14  20:51  Mars 0.9°N of Regulus
    16  11:26  Venus 1.5°N of Antares
    18  16:38  FULL MOON 
    18  16:50  Pen. Lunar Eclipse; mag=0.765
    19  14:47  Moon at Descending Node 
    21  03     Orionid Meteor Shower
    22  05:06  Aldebaran 2.7°S of Moon
    25  07:25  Moon at Apogee: 404561 km
    26  16:41  LAST QUARTER MOON 

Nov 01  02     Venus at Greatest Elong: 47.1°E
    01  13     Mercury at Inferior Conjunction 
    01  23:23  Spica 0.8°S of Moon
    02  23:52  Moon at Ascending Node 
    03  05:46  Hybrid Solar Eclipse; mag=1.016
    03  05:50  NEW MOON 
    05  04     S Taurid Meteor Shower
    06  02:28  Moon at Perigee: 365362 km
    06  04     Saturn in Conjunction with Sun 
    07  17     Mercury at Perihelion 
    09  22:57  FIRST QUARTER MOON 
    12  03     N Taurid Meteor Shower
    15  22:30  Moon at Descending Node 
    17  08:16  FULL MOON 
    17  09     Leonid Meteor Shower
    17  19     Mercury at Greatest Elong: 19.5°W
    18  13:00  Aldebaran 2.7°S of Moon
    22  02:50  Moon at Apogee: 405446 km
    25  12:28  LAST QUARTER MOON 
    25  22     Mercury 0.3°S of Saturn
    29  09:43  Spica 0.9°S of Moon
    30  09:59  Moon at Ascending Node 

Dec 01  03:13  Saturn 1.2°N of Moon: Occn.
    02  17:22  NEW MOON 
    04  03:15  Moon at Perigee: 360065 km
    09  08:12  FIRST QUARTER MOON 
    13  03:10  Moon at Descending Node 
    13  22     Geminid Meteor Shower
    15  19:45  Aldebaran 2.7°S of Moon
    17  02:28  FULL MOON 
    19  16:49  Moon at Apogee: 406269 km
    21  10:11  Winter Solstice 
    21  17     Mercury at Aphelion 
    22  07     Ursid Meteor Shower
    25  06:48  LAST QUARTER MOON 
    25  19:45  Mars 4.6°N of Moon
    26  19:10  Spica 1.0°S of Moon
    27  17:21  Moon at Ascending Node 
    28  18:42  Saturn 0.9°N of Moon: Occn.
    28  23     Mercury at Superior Conjunction 

    

Terms Used in Sky Event Almanac

  • Perihelion - instant when a planet is closest to the Sun
  • Aphelion - instant when a planet is furthest from the Sun
  • Perigee - instant when the Moon is closest to Earth
  • Apogee - instant when the Moon is furthest from Earth
  • Inferior Conjunction - instant when a planet (Mercury or Venus) passes between Earth and the Sun
  • Superior Conjunction - instant when a planet (Mercury or Venus) passes on the opposite side of the Sun from Earth
  • Greatest Elongation - the maximum angular separation between the Sun and the planet (Mercury or Venus) 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 - instant when a planet appears opposite the Sun as seen from Earth
  • Conjunction - instant when a planet appears closest the Sun as seen from Earth
  • Occultation - the Moon occults or eclipses a star or planet
  • Ascending Node - point where the Moon crosses from the southern to northern portion of its orbit
  • Descending Node - point where the Moon crosses from the northern to the southern portion of its orbit

  • Aldebaran - bright star in the constellation Taurus
  • Pollux - bright star in the constellation Gemini
  • Regulus - bright star in the constellation Leo
  • Spica - bright star in the constellation Virgo
  • Antares - bright star in the constellation Scorpius
  • Pleiades - bright star cluster in the constellation Taurus

2013 Phases of the Moon

Mountain Standard Time

The following table gives the date and time of the Moon's phases for the year. The times listed are for Mountain Standard Time (Coordinated Universal Time − 7 hours) . This time zone may have different names in different countries. If Daylight Saving Time is in effect, add one hour to the times listed.

2013 Phases of the Moon
Mountain Standard Time
New Moon First Quarter Full Moon Last Quarter
--- Jan 04 20:58
Jan 11 12:44 Jan 18 16:45 Jan 26 21:38 Feb 03 06:56
Feb 10 00:20 Feb 17 13:31 Feb 25 13:26 Mar 04 14:53
Mar 11 12:51 Mar 19 10:27 Mar 27 02:27 Apr 02 21:37
Apr 10 02:35 Apr 18 05:31 Apr 25 12:57 p May 02 04:14
May 09 17:29 A May 17 21:35 May 24 21:25 n May 31 11:58
Jun 08 08:56 Jun 16 10:24 Jun 23 04:32 Jun 29 21:54
Jul 08 00:14 Jul 15 20:18 Jul 22 11:15 Jul 29 10:43
Aug 06 14:51 Aug 14 03:56 Aug 20 18:45 Aug 28 02:35
Sep 05 04:36 Sep 12 10:08 Sep 19 04:13 Sep 26 20:56
Oct 04 17:35 Oct 11 16:02 Oct 18 16:38 n Oct 26 16:41
Nov 03 05:50 H Nov 09 22:57 Nov 17 08:16 Nov 25 12:28
Dec 02 17:22 Dec 09 08:12 Dec 17 02:28 Dec 25 06:48

For a collection of images showing the Moon's phases see: Phases of the Moon Photo Gallery.

The Phases of the Moon table also shows when an eclipse takes place. 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 Phases of the Moon table. 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.


Solar Eclipses

The following table contains links to a series of web pages covering the 21st Century. Each one summarizes ten years of solar eclipses. Every eclipse has links to a global visibility map, an interactive Google map, tables, and additional information.

Decade Pages of Solar Eclipses
Decades
2001-2010 2011-2020 2021-2030 2031-2040 2041-2050
2051-2060 2061-2070 2071-2080 2081-2090 2091-2100

Lunar Eclipses

The following table contains links to a series of web pages covering the 21st Century. Each one summarizes ten years of lunar eclipses. Every eclipse has links to an eclipse diagram, a global visibility map, tables, and additional information.

Decade Pages of Lunar Eclipses
Decades
2001-2010 2011-2020 2021-2030 2031-2040 2041-2050
2051-2060 2061-2070 2071-2080 2081-2090 2091-2100


Sky Event Almanacs: 2011 to 2020

The Americas

Below are links to sky event almanacs from 2011 to 2020 for eight time zones in the Americas.
Choose a time zone and click on a year to get a sky event almanac for that year.

Sky Event Almanacs - The Americas
ART 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
AST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
EST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
CST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
MST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
PST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
AKST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
HST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

        Time Zones Abbreviations
        • ART = Argentina Time (= UTC - 3 hours)
        • AST = Atlantic Standard Time (= UTC - 4 hours)
        • EST = Eastern Standard Time (= UTC - 5 hours)
        • CST = Central Standard Time (= UTC - 6 hours)
        • MST = Mountain Standard Time (= UTC - 7 hours)
        • PST = Pacific Standard Time (= UTC - 8 hours)
        • AKST = Alaskan Standard Time (= UTC - 9 hours)
        • HST = Hawaiian Standard Time (= UTC - 10 hours)
          (where UTC = Coordinated Universal Time)

A time zone may have a different name in different countries. Note the difference in hours between a given time zone and Coordinated Universal Time to help in identification.

For other years and other time zones, visit: Sky Event Almanacs.

Accuracy of the Sky Event Almanacs

The goal of the Sky Event Almanacs is to present a wide range of solar system phenomena with reasonable accuracy. In general, events listed to the nearest hour are accurate to ± 30 minutes. Events listed with a precision in hours and minutes (i.e., hh:mm) are typically accurate to ± 5 minutes or less.

The following table gives a more detailed breakdown of the accuracy of times for various astronomical events.

Accuracy of the Sky Event Almanacs
Solstice/Equinox (Earth) ± 0.5 minute
Aphelion/Perihelion (Earth) ± 30 minutes; ± 0.00001 AU
Solar and Lunar Eclipses ± 0.5 minute
Phases of the Moon ± 0.5 minute
Moon at Nodes ± 2 minutes
Apogee/Perigee of Moon ± 5 minutes; ± 5 kilometers
Conjunctions of Moon with Star or Planet ± 10 minutes
Conjunctions of Planet with Planet ± 3 hours
Inferior/Superior Conjunctions (Mercury & Venus) ± 30 minutes
Greatest Elongation (Mercury & Venus) ± 30 minutes
Opposition/Conjunction (Outer Planets) ± 3 hours
Aphelion/Perihelion of Planets ± 30 minutes

Fifty Year Almanac of Astronomical Events - 2021 to 2070

book

Acknowledgements

All calculations are by Fred Espenak and he assumes full responsibility for their accuracy. Algorithms used in predicting many of the astronomical events 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:

    "Sky Event Almanacs Courtesy of Fred Espenak, www.AstroPixels.com".


Return to: Sky Event Almanacs

Return to: Planetary Ephemeris Data


Useful External Links

Interactive Sky Chart (Sky and Telescope)
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Astronomy Tools (Astronomy Tools)