2012Calendar of Astronomical Events

    

2012Phases of the Moon

Alaska Standard Time

The following table gives the date and time of the Moon's phases for the year. The times listed are for Alaska Standard Time(Greenwich Mean Time - 9 hours).If Daylight Saving Time is in effect, add one hour to the times listed.

2012 Phases of the Moon
Alaska Standard Time
New Moon First Quarter Full Moon Last Quarter
- Dec 31 21:15 Jan 8 22:30 Jan 16 00:08
Jan 22 22:39 Jan 30 19:10 Feb 7 12:54 Feb 14 08:04
Feb 21 13:35 Feb 29 16:22 Mar 8 00:40 Mar 14 16:25
Mar 22 05:37 Mar 30 10:41 Apr 6 10:19 Apr 13 01:50
Apr 20 22:18 Apr 29 00:58 May 5 18:35 May 12 12:47
May 20 14:47 A May 28 11:16 Jun 4 02:12 p Jun 11 01:41
Jun 19 06:02 Jun 26 18:30 Jul 3 09:52 Jul 10 16:48
Jul 18 19:24 Jul 25 23:56 Aug 1 18:27 Aug 9 09:55
Aug 17 06:54 Aug 24 04:54 Aug 31 04:58 Sep 8 04:15
Sep 15 17:11 Sep 22 10:41 Sep 29 18:19 Oct 7 22:33
Oct 15 03:02 Oct 21 18:32 Oct 29 10:50 Nov 6 15:36
Nov 13 13:08 T Nov 20 05:31 Nov 28 05:46 n Dec 6 06:32
Dec 12 23:42 Dec 19 20:19 Dec 28 01:21 -

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.


2012Calendar of Astronomical Events

Alaska Standard Time

The following table gives the date and time of the important astronomical events for the year. The times listed are for Alaska Standard Time(Greenwich Mean Time - 9 hours).If Daylight Saving Time is in effect, add one hour to the times listed. A key to astronomical terms appears below the calendar.

2012Calendar of Astronomical Events
Alaska Standard Time
January - June July - December
Date     AKST   Even        (h:m)Jan 02  11:19  Moon at Apogee: 404580 km    02  17:46  Jupiter 5.0°S of Moon    03  22     Quadrantid Meteor Shower    04  16     Earth at Perihelion: 0.98328 AU    05  00:17  Pleiades 2.8°N of Moon    05  22:43  Aldebaran 5.8°S of Moon    06  05:30  Moon at Descending Node     08  22:30  FULL MOON     12  04:04  Regulus 5.9°N of Moon    15  22:21  Spica 2.0°N of Moon    16  00:08  LAST QUARTER MOON     16  10:07  Saturn 6.4°N of Moon    17  12:28  Moon at Perigee: 369883 km    17  21     Mercury at Aphelion     19  01:59  Antares 4.2°S of Moon    19  09:26  Moon at Ascending Node     22  22:39  NEW MOON     30  05:38  Jupiter 4.5°S of Moon    30  08:42  Moon at Apogee: 404325 km    30  19:10  FIRST QUARTER MOON Feb 01  08:42  Pleiades 3.0°N of Moon    02  07:22  Aldebaran 5.7°S of Moon    02  11:02  Moon at Descending Node     07  00     Mercury at Superior Conjunction     07  12:54  FULL MOON     08  11:43  Regulus 5.8°N of Moon    11  09:32  Moon at Perigee: 367920 km    12  03:47  Spica 1.8°N of Moon    12  16:08  Saturn 6.2°N of Moon    14  08:04  LAST QUARTER MOON     15  07:35  Antares 4.4°S of Moon    15  11:16  Moon at Ascending Node     15  12     Mars at Aphelion:  1.66598 AU    19  11     Neptune in Conjunction with Sun     21  13:35  NEW MOON     25  12:44  Venus 3.3°S of Moon    26  21:16  Jupiter 3.8°S of Moon    27  05:01  Moon at Apogee: 404864 km    28  16:46  Pleiades 3.3°N of Moon    29  13:37  Moon at Descending Node     29  15:45  Aldebaran 5.4°S of Moon    29  16:22  FIRST QUARTER MOON Mar 01  20     Mercury at Perihelion     03  10     Mars at Opposition     05  00     Mercury at Greatest Elong: 18.2°E    06  21:36  Regulus 5.8°N of Moon    08  00:40  FULL MOON     10  01:02  Moon at Perigee: 362401 km    10  11:20  Spica 1.5°N of Moon    10  22:00  Saturn 6.2°N of Moon    13  11:41  Moon at Ascending Node     13  13     Venus 3.0°N of Jupiter    13  13:10  Antares 4.7°S of Moon    14  16:25  LAST QUARTER MOON     19  20:15  Vernal Equinox     20  16     Venus at Perihelion     21  10     Mercury at Inferior Conjunction     22  05:37  NEW MOON     24  09     Uranus in Conjunction with Sun     25  14:57  Jupiter 3.1°S of Moon    25  21:04  Moon at Apogee: 405780 km    26  09:21  Venus 1.8°N of Moon    26  22     Venus at Greatest Elong: 46.0°E    26  23:56  Pleiades 3.5°N of Moon    27  15:19  Moon at Descending Node     27  23:07  Aldebaran 5.2°S of Moon    30  10:41  FIRST QUARTER MOON Apr 03  04:18  Venus 0.4°S of Pleiades    03  08:10  Regulus 5.9°N of Moon    06  10:19  FULL MOON     06  21:24  Spica 1.5°N of Moon    07  05:07  Saturn 6.3°N of Moon    07  07:59  Moon at Perigee: 358314 km    09  15:47  Moon at Ascending Node     09  20:54  Antares 4.9°S of Moon    13  01:50  LAST QUARTER MOON     15  09     Saturn at Opposition     15  17:18  Mars 0.7°N of Regulus    18  08     Mercury at Greatest Elong: 27.5°W    20  22:18  NEW MOON     21  20     Lyrid Meteor Shower    22  04:49  Moon at Apogee: 406422 km    23  06:15  Pleiades 3.6°N of Moon    23  18:43  Moon at Descending Node     24  05:27  Aldebaran 5.0°S of Moon    24  17:21  Venus 5.7°N of Moon    29  00:58  FIRST QUARTER MOON     30  17:31  Regulus 6.1°N of MoonMay 04  08:26  Spica 1.5°N of Moon    04  09     Eta-Aquarid Meteor Shower    04  13:04  Saturn 6.4°N of Moon    05  18:33  Moon at Perigee: 356954 km    05  18:35  FULL MOON     07  00:43  Moon at Ascending Node     07  06:57  Antares 5.0°S of Moon    12  12:47  LAST QUARTER MOON     13  04     Jupiter in Conjunction with Sun     19  07:13  Moon at Apogee: 406451 km    20  14:47  NEW MOON     20  14:53  Annular Solar Eclipse; mag=0.944    21  00:20  Moon at Descending Node     22  11:52  Venus 4.7°N of Moon    27  02     Mercury at Superior Conjunction     28  00:43  Regulus 6.2°N of Moon    28  11:16  FIRST QUARTER MOON     28  20     Mercury at Perihelion     31  18:24  Spica 1.5°N of Moon    31  20:45  Saturn 6.5°N of MoonJun 03  04:19  Moon at Perigee: 358483 km    03  11:38  Moon at Ascending Node     03  17:51  Antares 5.0°S of Moon    04  02:03  Partial Lunar Eclipse; mag=0.370    04  02:12  FULL MOON     05  16     Venus at Inferior Conjunction     11  00:30  Jupiter 4.7°S of Pleiades    11  01:41  LAST QUARTER MOON     15  16:24  Moon at Apogee: 405791 km    16  18:34  Pleiades 3.6°N of Moon    16  23:23  Jupiter 1.1°S of Moon: Occn.    17  06:43  Moon at Descending Node     17  15:47  Venus 2.1°S of Moon    19  06:02  NEW MOON     20  08:50  Mercury 4.9°S of Pollux    20  14:08  Summer Solstice     21  01:33  Venus 2.2°N of Aldebaran    24  06:18  Regulus 6.1°N of Moon    26  06:02  Mars 5.8°N of Moon    26  18:30  FIRST QUARTER MOON     28  02:04  Spica 1.4°N of Moon    28  03:40  Saturn 6.3°N of Moon    30  17     Mercury at Greatest Elong: 25.7°E    30  20:45  Moon at Ascending Node     30  23     Venus 4.8°S of Jupiter
Date     AKST   Even        (h:m)Jul 01  03:42  Antares 5.0°S of Moon    01  09:01  Moon at Perigee: 362363 km    02  05:57  Mercury 1.6°S of Beehive    03  09:52  FULL MOON     04  19     Earth at Aphelion: 1.01668 AU    08  19:13  Venus 0.9°N of Aldebaran    10  16:48  LAST QUARTER MOON     11  01     Venus at Aphelion     11  19     Mercury at Aphelion     13  07:47  Moon at Apogee: 404783 km    14  01:34  Pleiades 3.7°N of Moon    14  11:55  Moon at Descending Node     14  18:02  Jupiter 0.5°S of Moon: Occn.    15  00:40  Aldebaran 4.9°S of Moon    15  06:29  Venus 3.8°S of Moon    18  19:24  NEW MOON     21  11:52  Regulus 5.9°N of Moon    24  13:07  Mars 4.2°N of Moon    25  07:43  Spica 1.2°N of Moon    25  10:29  Saturn 6.0°N of Moon    25  23:56  FIRST QUARTER MOON     27  11     Delta-Aquarid Meteor Shower    28  01:34  Moon at Ascending Node     28  11     Mercury at Inferior Conjunction     28  11:21  Antares 5.2°S of Moon    28  23:30  Moon at Perigee: 367318 km    29  02:45  Jupiter 4.6°N of AldebaranAug 01  18:27  FULL MOON     02  04:36  Saturn 4.0°N of Spica    09  09:55  LAST QUARTER MOON     10  01:52  Moon at Apogee: 404125 km    10  09:12  Pleiades 3.9°N of Moon    10  15:04  Moon at Descending Node     11  08:25  Aldebaran 4.8°S of Moon    11  11:25  Jupiter 0.1°N of Moon: Occn.    12  03     Perseid Meteor Shower    13  10:41  Venus 0.6°S of Moon: Occn.    13  13:45  Mars 1.6°N of Spica    15  01     Venus at Greatest Elong: 45.8°W    15  09     Mars 2.7°S of Saturn    15  20:06  Mercury 3.6°N of Moon    16  03     Mercury at Greatest Elong: 18.7°W    17  06:55  NEW MOON     18  06:33  Mercury 2.1°S of Beehive    21  13:04  Spica 1.0°N of Moon    21  18:43  Saturn 5.5°N of Moon    21  22:50  Mars 2.3°N of Moon    23  10:39  Moon at Perigee: 369731 km    24  02     Neptune at Opposition     24  02:38  Moon at Ascending Node     24  04:54  FIRST QUARTER MOON     24  17:02  Antares 5.4°S of Moon    24  19     Mercury at Perihelion     31  04:58  FULL MOON Sep 06  17:08  Moon at Descending Node     06  21:00  Moon at Apogee: 404296 km    07  16:23  Aldebaran 4.5°S of Moon    08  01:59  Jupiter 0.6°N of Moon: Occn.    08  04:15  LAST QUARTER MOON     10  04     Mercury at Superior Conjunction     12  08:09  Venus 3.7°N of Moon    12  23:52  Venus 2.6°S of Beehive    14  03:51  Regulus 5.9°N of Moon    15  17:11  NEW MOON     17  20:05  Spica 0.8°N of Moon    18  05:45  Saturn 5.0°N of Moon    18  17:52  Moon at Perigee: 365749 km    19  11:36  Mars 0.2°N of Moon: Occn.    20  03:54  Moon at Ascending Node     20  22:30  Antares 5.6°S of Moon    22  05:49  Autumnal Equinox     22  10:41  FIRST QUARTER MOON     28  22     Uranus at Opposition     29  18:19  FULL MOON Oct 01  01:56  Mercury 1.5°N of Spica    02  18:35  Venus 0.1°S of Regulus    03  20:15  Moon at Descending Node     04  15:43  Moon at Apogee: 405162 km    04  23     Mercury 3.2°S of Saturn    04  23:58  Aldebaran 4.3°S of Moon    05  11:50  Jupiter 0.9°N of Moon: Occn.    07  22:33  LAST QUARTER MOON     11  13:52  Regulus 6.0°N of Moon    12  10:10  Venus 6.3°N of Moon    15  03:02  NEW MOON     16  16:02  Moon at Perigee: 360673 km    16  16:43  Mercury 1.3°S of Moon    17  09:27  Moon at Ascending Node     18  04:06  Mars 2.0°S of Moon    18  05:50  Antares 5.8°S of Moon    20  11:07  Mars 3.5°N of Antares    20  19     Orionid Meteor Shower    21  18:32  FIRST QUARTER MOON     24  23     Saturn in Conjunction with Sun     26  13     Mercury at Greatest Elong: 24.1°E    29  10:50  FULL MOON     31  01:36  Moon at Descending Node     31  09     Venus at Perihelion Nov 01  06:30  Moon at Apogee: 406050 km    01  06:49  Aldebaran 4.2°S of Moon    01  15:58  Jupiter 0.9°N of Moon: Occn.    04  20     S Taurid Meteor Shower    06  05:32  Mercury 3.0°N of Antares    06  15:36  LAST QUARTER MOON     07  23:13  Regulus 6.1°N of Moon    11  08:52  Venus 5.3°N of Moon    11  16:42  Spica 0.8°N of Moon    11  19     N Taurid Meteor Shower    13  13:08  NEW MOON     13  13:12  Total Solar Eclipse; mag=1.050    13  19:37  Moon at Ascending Node     14  01:21  Moon at Perigee: 357361 km    16  00:40  Mars 4.0°S of Moon    16  16:22  Venus 3.6°N of Spica    17  01     Leonid Meteor Shower    17  07     Mercury at Inferior Conjunction     20  05:31  FIRST QUARTER MOON     20  18     Mercury at Perihelion     26  20     Venus 0.5°S of Saturn    27  08:05  Moon at Descending Node     28  05:33  Pen. Lunar Eclipse; mag=0.915    28  05:46  FULL MOON     28  10:35  Moon at Apogee: 406366 km    28  13:06  Aldebaran 4.2°S of Moon    28  15:46  Jupiter 0.6°N of Moon: Occn.Dec 02  16     Jupiter at Opposition     04  14     Mercury at Greatest Elong: 20.6°W    05  06:35  Regulus 6.1°N of Moon    06  06:32  LAST QUARTER MOON     09  00     Mercury 6.3°S of Venus    09  03:04  Spica 0.8°N of Moon    10  03:46  Saturn 4.0°N of Moon    11  04:48  Venus 1.6°N of Moon    11  06:57  Moon at Ascending Node     11  15:44  Mercury 1.1°N of Moon: Occn.    12  14:14  Moon at Perigee: 357074 km    12  20:18  Jupiter 4.7°N of Aldebaran    12  23:42  NEW MOON     13  14     Geminid Meteor Shower    18  00:57  Mercury 5.2°N of Antares    19  20:19  FIRST QUARTER MOON     21  02:12  Winter Solstice     21  23     Ursid Meteor Shower    23  18:19  Venus 5.5°N of Antares    24  13:27  Moon at Descending Node     25  12:19  Moon at Apogee: 406101 km    25  15:02  Jupiter 0.4°N of Moon: Occn.    25  19:23  Aldebaran 4.2°S of Moon    28  01:21  FULL MOON     

Terms Used in Astronomical Events Calendar

  • 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
  • Beehive - bright star cluster in the constellation Cancer

Calendars of Astronomical Events: 2011 to 2020

The Americas

Below are links to calendars of astronomical events from 2011 to 2020 for seven time zones in the Americas.
Choose a time zone and click on a year to get a calendar of astronomical events for that year.

Calendars of Astronomical Events - The Americas
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
        • AST = Atlantic Standard Time (= GMT - 4 hours)
        • EST = Eastern Standard Time (= GMT - 5 hours)
        • CST = Central Standard Time (= GMT - 6 hours)
        • MST = Mountain Standard Time (= GMT - 7 hours)
        • PST = Pacific Standard Time (= GMT - 8 hours)
        • AKST = Alaskan Standard Time (= GMT - 9 hours)
        • HST = Hawaiian Standard Time (= GMT - 10 hours)
          (where GMT = Greenwich Mean Time)

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

For other years and other time zones, visit: Calendars of Astronomical Events.

Accuracy of the Astronomical Events Calendars

The goal of the Astronomical Events Calendars 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 Astronomical Events Calendars
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

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:


Return to: Calendars of Astronomical Events

Return to: Planetary Ephemeris Data