2012Calendar of Astronomical Events

    

2012Phases of the Moon

Eastern Standard Time

The following table gives the date and time of the Moon's phases for the year. The times listed are for Eastern Standard Time(Greenwich Mean Time - 5 hours).If Daylight Saving Time is in effect, add one hour to the times listed.

2012 Phases of the Moon
Eastern Standard Time
New Moon First Quarter Full Moon Last Quarter
- Jan 1 01:15 Jan 9 02:30 Jan 16 04:08
Jan 23 02:39 Jan 30 23:10 Feb 7 16:54 Feb 14 12:04
Feb 21 17:35 Feb 29 20:22 Mar 8 04:40 Mar 14 20:25
Mar 22 09:37 Mar 30 14:41 Apr 6 14:19 Apr 13 05:50
Apr 21 02:18 Apr 29 04:58 May 5 22:35 May 12 16:47
May 20 18:47 A May 28 15:16 Jun 4 06:12 p Jun 11 05:41
Jun 19 10:02 Jun 26 22:30 Jul 3 13:52 Jul 10 20:48
Jul 18 23:24 Jul 26 03:56 Aug 1 22:27 Aug 9 13:55
Aug 17 10:54 Aug 24 08:54 Aug 31 08:58 Sep 8 08:15
Sep 15 21:11 Sep 22 14:41 Sep 29 22:19 Oct 8 02:33
Oct 15 07:02 Oct 21 22:32 Oct 29 14:50 Nov 6 19:36
Nov 13 17:08 T Nov 20 09:31 Nov 28 09:46 n Dec 6 10:32
Dec 13 03:42 Dec 20 00:19 Dec 28 05:21 -

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

Eastern Standard Time

The following table gives the date and time of the important astronomical events for the year. The times listed are for Eastern Standard Time(Greenwich Mean Time - 5 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
Eastern Standard Time
January - June July - December
Date     EST   Event        (h:m)Jan 01  01:15  FIRST QUARTER MOON     02  15:19  Moon at Apogee: 404580 km    02  21:46  Jupiter 5.0°S of Moon    04  02     Quadrantid Meteor Shower    04  20     Earth at Perihelion: 0.98328 AU    05  04:17  Pleiades 2.8°N of Moon    06  02:43  Aldebaran 5.8°S of Moon    06  09:30  Moon at Descending Node     09  02:30  FULL MOON     12  08:04  Regulus 5.9°N of Moon    16  02:21  Spica 2.0°N of Moon    16  04:08  LAST QUARTER MOON     16  14:07  Saturn 6.4°N of Moon    17  16:28  Moon at Perigee: 369883 km    18  01     Mercury at Aphelion     19  05:59  Antares 4.2°S of Moon    19  13:26  Moon at Ascending Node     23  02:39  NEW MOON     30  09:38  Jupiter 4.5°S of Moon    30  12:42  Moon at Apogee: 404325 km    30  23:10  FIRST QUARTER MOON Feb 01  12:42  Pleiades 3.0°N of Moon    02  11:22  Aldebaran 5.7°S of Moon    02  15:02  Moon at Descending Node     07  04     Mercury at Superior Conjunction     07  16:54  FULL MOON     08  15:43  Regulus 5.8°N of Moon    11  13:32  Moon at Perigee: 367920 km    12  07:47  Spica 1.8°N of Moon    12  20:08  Saturn 6.2°N of Moon    14  12:04  LAST QUARTER MOON     15  11:35  Antares 4.4°S of Moon    15  15:16  Moon at Ascending Node     15  16     Mars at Aphelion:  1.66598 AU    19  15     Neptune in Conjunction with Sun     21  17:35  NEW MOON     25  16:44  Venus 3.3°S of Moon    27  01:16  Jupiter 3.8°S of Moon    27  09:01  Moon at Apogee: 404864 km    28  20:46  Pleiades 3.3°N of Moon    29  17:37  Moon at Descending Node     29  19:45  Aldebaran 5.4°S of Moon    29  20:22  FIRST QUARTER MOON Mar 02  00     Mercury at Perihelion     03  14     Mars at Opposition     05  04     Mercury at Greatest Elong: 18.2°E    07  01:36  Regulus 5.8°N of Moon    08  04:40  FULL MOON     10  05:02  Moon at Perigee: 362401 km    10  15:20  Spica 1.5°N of Moon    11  02:00  Saturn 6.2°N of Moon    13  15:41  Moon at Ascending Node     13  17     Venus 3.0°N of Jupiter    13  17:10  Antares 4.7°S of Moon    14  20:25  LAST QUARTER MOON     20  00:15  Vernal Equinox     20  20     Venus at Perihelion     21  14     Mercury at Inferior Conjunction     22  09:37  NEW MOON     24  13     Uranus in Conjunction with Sun     25  18:57  Jupiter 3.1°S of Moon    26  01:04  Moon at Apogee: 405780 km    26  13:21  Venus 1.8°N of Moon    27  02     Venus at Greatest Elong: 46.0°E    27  03:56  Pleiades 3.5°N of Moon    27  19:19  Moon at Descending Node     28  03:07  Aldebaran 5.2°S of Moon    30  14:41  FIRST QUARTER MOON Apr 03  08:18  Venus 0.4°S of Pleiades    03  12:10  Regulus 5.9°N of Moon    06  14:19  FULL MOON     07  01:24  Spica 1.5°N of Moon    07  09:07  Saturn 6.3°N of Moon    07  11:59  Moon at Perigee: 358314 km    09  19:47  Moon at Ascending Node     10  00:54  Antares 4.9°S of Moon    13  05:50  LAST QUARTER MOON     15  13     Saturn at Opposition     15  21:18  Mars 0.7°N of Regulus    18  12     Mercury at Greatest Elong: 27.5°W    21  02:18  NEW MOON     22  00     Lyrid Meteor Shower    22  08:49  Moon at Apogee: 406422 km    23  10:15  Pleiades 3.6°N of Moon    23  22:43  Moon at Descending Node     24  09:27  Aldebaran 5.0°S of Moon    24  21:21  Venus 5.7°N of Moon    29  04:58  FIRST QUARTER MOON     30  21:31  Regulus 6.1°N of MoonMay 04  12:26  Spica 1.5°N of Moon    04  13     Eta-Aquarid Meteor Shower    04  17:04  Saturn 6.4°N of Moon    05  22:33  Moon at Perigee: 356954 km    05  22:35  FULL MOON     07  04:43  Moon at Ascending Node     07  10:57  Antares 5.0°S of Moon    12  16:47  LAST QUARTER MOON     13  08     Jupiter in Conjunction with Sun     19  11:13  Moon at Apogee: 406451 km    20  18:47  NEW MOON     20  18:53  Annular Solar Eclipse; mag=0.944    21  04:20  Moon at Descending Node     22  15:52  Venus 4.7°N of Moon    27  06     Mercury at Superior Conjunction     28  04:43  Regulus 6.2°N of Moon    28  15:16  FIRST QUARTER MOON     29  00     Mercury at Perihelion     31  22:24  Spica 1.5°N of MoonJun 01  00:45  Saturn 6.5°N of Moon    03  08:19  Moon at Perigee: 358483 km    03  15:38  Moon at Ascending Node     03  21:51  Antares 5.0°S of Moon    04  06:03  Partial Lunar Eclipse; mag=0.370    04  06:12  FULL MOON     05  20     Venus at Inferior Conjunction     11  04:30  Jupiter 4.7°S of Pleiades    11  05:41  LAST QUARTER MOON     15  20:24  Moon at Apogee: 405791 km    16  22:34  Pleiades 3.6°N of Moon    17  03:23  Jupiter 1.1°S of Moon: Occn.    17  10:43  Moon at Descending Node     17  19:47  Venus 2.1°S of Moon    19  10:02  NEW MOON     20  12:50  Mercury 4.9°S of Pollux    20  18:08  Summer Solstice     21  05:33  Venus 2.2°N of Aldebaran    24  10:18  Regulus 6.1°N of Moon    26  10:02  Mars 5.8°N of Moon    26  22:30  FIRST QUARTER MOON     28  06:04  Spica 1.4°N of Moon    28  07:40  Saturn 6.3°N of Moon    30  21     Mercury at Greatest Elong: 25.7°E
Date     EST   Event        (h:m)Jul 01  00:45  Moon at Ascending Node     01  03     Venus 4.8°S of Jupiter    01  07:42  Antares 5.0°S of Moon    01  13:01  Moon at Perigee: 362363 km    02  09:57  Mercury 1.6°S of Beehive    03  13:52  FULL MOON     04  23     Earth at Aphelion: 1.01668 AU    08  23:13  Venus 0.9°N of Aldebaran    10  20:48  LAST QUARTER MOON     11  05     Venus at Aphelion     11  23     Mercury at Aphelion     13  11:47  Moon at Apogee: 404783 km    14  05:34  Pleiades 3.7°N of Moon    14  15:55  Moon at Descending Node     14  22:02  Jupiter 0.5°S of Moon: Occn.    15  04:40  Aldebaran 4.9°S of Moon    15  10:29  Venus 3.8°S of Moon    18  23:24  NEW MOON     21  15:52  Regulus 5.9°N of Moon    24  17:07  Mars 4.2°N of Moon    25  11:43  Spica 1.2°N of Moon    25  14:29  Saturn 6.0°N of Moon    26  03:56  FIRST QUARTER MOON     27  15     Delta-Aquarid Meteor Shower    28  05:34  Moon at Ascending Node     28  15     Mercury at Inferior Conjunction     28  15:21  Antares 5.2°S of Moon    29  03:30  Moon at Perigee: 367318 km    29  06:45  Jupiter 4.6°N of AldebaranAug 01  22:27  FULL MOON     02  08:36  Saturn 4.0°N of Spica    09  13:55  LAST QUARTER MOON     10  05:52  Moon at Apogee: 404125 km    10  13:12  Pleiades 3.9°N of Moon    10  19:04  Moon at Descending Node     11  12:25  Aldebaran 4.8°S of Moon    11  15:25  Jupiter 0.1°N of Moon: Occn.    12  07     Perseid Meteor Shower    13  14:41  Venus 0.6°S of Moon: Occn.    13  17:45  Mars 1.6°N of Spica    15  05     Venus at Greatest Elong: 45.8°W    15  13     Mars 2.7°S of Saturn    16  00:06  Mercury 3.6°N of Moon    16  07     Mercury at Greatest Elong: 18.7°W    17  10:55  NEW MOON     18  10:33  Mercury 2.1°S of Beehive    21  17:04  Spica 1.0°N of Moon    21  22:43  Saturn 5.5°N of Moon    22  02:50  Mars 2.3°N of Moon    23  14:39  Moon at Perigee: 369731 km    24  06     Neptune at Opposition     24  06:38  Moon at Ascending Node     24  08:54  FIRST QUARTER MOON     24  21:02  Antares 5.4°S of Moon    24  23     Mercury at Perihelion     31  08:58  FULL MOON Sep 06  21:08  Moon at Descending Node     07  01:00  Moon at Apogee: 404296 km    07  20:23  Aldebaran 4.5°S of Moon    08  05:59  Jupiter 0.6°N of Moon: Occn.    08  08:15  LAST QUARTER MOON     10  08     Mercury at Superior Conjunction     12  12:09  Venus 3.7°N of Moon    13  03:52  Venus 2.6°S of Beehive    14  07:51  Regulus 5.9°N of Moon    15  21:11  NEW MOON     18  00:05  Spica 0.8°N of Moon    18  09:45  Saturn 5.0°N of Moon    18  21:52  Moon at Perigee: 365749 km    19  15:36  Mars 0.2°N of Moon: Occn.    20  07:54  Moon at Ascending Node     21  02:30  Antares 5.6°S of Moon    22  09:49  Autumnal Equinox     22  14:41  FIRST QUARTER MOON     29  02     Uranus at Opposition     29  22:19  FULL MOON Oct 01  05:56  Mercury 1.5°N of Spica    02  22:35  Venus 0.1°S of Regulus    04  00:15  Moon at Descending Node     04  19:43  Moon at Apogee: 405162 km    05  03     Mercury 3.2°S of Saturn    05  03:58  Aldebaran 4.3°S of Moon    05  15:50  Jupiter 0.9°N of Moon: Occn.    08  02:33  LAST QUARTER MOON     11  17:52  Regulus 6.0°N of Moon    12  14:10  Venus 6.3°N of Moon    15  07:02  NEW MOON     16  20:02  Moon at Perigee: 360673 km    16  20:43  Mercury 1.3°S of Moon    17  13:27  Moon at Ascending Node     18  08:06  Mars 2.0°S of Moon    18  09:50  Antares 5.8°S of Moon    20  15:07  Mars 3.5°N of Antares    20  23     Orionid Meteor Shower    21  22:32  FIRST QUARTER MOON     25  03     Saturn in Conjunction with Sun     26  17     Mercury at Greatest Elong: 24.1°E    29  14:50  FULL MOON     31  05:36  Moon at Descending Node     31  13     Venus at Perihelion Nov 01  10:30  Moon at Apogee: 406050 km    01  10:49  Aldebaran 4.2°S of Moon    01  19:58  Jupiter 0.9°N of Moon: Occn.    05  00     S Taurid Meteor Shower    06  09:32  Mercury 3.0°N of Antares    06  19:36  LAST QUARTER MOON     08  03:13  Regulus 6.1°N of Moon    11  12:52  Venus 5.3°N of Moon    11  20:42  Spica 0.8°N of Moon    11  23     N Taurid Meteor Shower    13  17:08  NEW MOON     13  17:12  Total Solar Eclipse; mag=1.050    13  23:37  Moon at Ascending Node     14  05:21  Moon at Perigee: 357361 km    16  04:40  Mars 4.0°S of Moon    16  20:22  Venus 3.6°N of Spica    17  05     Leonid Meteor Shower    17  11     Mercury at Inferior Conjunction     20  09:31  FIRST QUARTER MOON     20  22     Mercury at Perihelion     27  00     Venus 0.5°S of Saturn    27  12:05  Moon at Descending Node     28  09:33  Pen. Lunar Eclipse; mag=0.915    28  09:46  FULL MOON     28  14:35  Moon at Apogee: 406366 km    28  17:06  Aldebaran 4.2°S of Moon    28  19:46  Jupiter 0.6°N of Moon: Occn.Dec 02  20     Jupiter at Opposition     04  18     Mercury at Greatest Elong: 20.6°W    05  10:35  Regulus 6.1°N of Moon    06  10:32  LAST QUARTER MOON     09  04     Mercury 6.3°S of Venus    09  07:04  Spica 0.8°N of Moon    10  07:46  Saturn 4.0°N of Moon    11  08:48  Venus 1.6°N of Moon    11  10:57  Moon at Ascending Node     11  19:44  Mercury 1.1°N of Moon: Occn.    12  18:14  Moon at Perigee: 357074 km    13  00:18  Jupiter 4.7°N of Aldebaran    13  03:42  NEW MOON     13  18     Geminid Meteor Shower    18  04:57  Mercury 5.2°N of Antares    20  00:19  FIRST QUARTER MOON     21  06:12  Winter Solstice     22  03     Ursid Meteor Shower    23  22:19  Venus 5.5°N of Antares    24  17:27  Moon at Descending Node     25  16:19  Moon at Apogee: 406101 km    25  19:02  Jupiter 0.4°N of Moon: Occn.    25  23:23  Aldebaran 4.2°S of Moon    28  05:21  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