2015Calendar of Astronomical Events

    

2015Phases of the Moon

Central Standard Time

The following table gives the date and time of the Moon's phases for the year. The times listed are for Central Standard Time(Greenwich Mean Time - 6 hours).If Daylight Saving Time is in effect, add one hour to the times listed.

2015 Phases of the Moon
Central Standard Time
New Moon First Quarter Full Moon Last Quarter
-- Jan 4 22:53 Jan 13 03:47
Jan 20 07:14 Jan 26 22:48 Feb 3 17:09 Feb 11 21:50
Feb 18 17:47 Feb 25 11:14 Mar 5 12:06 Mar 13 11:48
Mar 20 03:36 T Mar 27 01:43 Apr 4 06:06 p Apr 11 21:44
Apr 18 12:57 Apr 25 17:55 May 3 21:42 May 11 04:36
May 17 22:13 May 25 11:19 Jun 2 10:19 Jun 9 09:42
Jun 16 08:05 Jun 24 05:03 Jul 1 20:20 Jul 8 14:24
Jul 15 19:24 Jul 23 22:04 Jul 31 04:43 Aug 6 20:03
Aug 14 08:54 Aug 22 13:31 Aug 29 12:35 Sep 5 03:54
Sep 13 00:41 P Sep 21 02:59 Sep 27 20:50 t Oct 4 15:06
Oct 12 18:06 Oct 20 14:31 Oct 27 06:05 Nov 3 06:24
Nov 11 11:47 Nov 19 00:27 Nov 25 16:44 Dec 3 01:40
Dec 11 04:29 Dec 18 09:14 Dec 25 05:11 -

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.


2015Calendar of Astronomical Events

Central Standard Time

The following table gives the date and time of the important astronomical events for the year. The times listed are for Central Standard Time(Greenwich Mean Time - 6 hours).If Daylight Saving Time is in effect, add one hour to the times listed. A key to astronomical terms appears below the calendar.

2015Calendar of Astronomical Events
Central Standard Time
January - June July - December
Date     CST   Event        (h:m)Jan 02  05:35  Aldebaran 1.4°S of Moon    03  20     Quadrantid Meteor Shower    04  00     Earth at Perihelion: 0.98328 AU    04  22:53  FULL MOON     08  02:16  Jupiter 5.1°N of Moon    08  19:34  Regulus 4.1°N of Moon    09  12:17  Moon at Apogee: 405411 km    10  19     Mercury 0.6°N of Venus    12  09:33  Moon at Ascending Node     13  03:27  Spica 3.1°S of Moon    13  03:47  LAST QUARTER MOON     14  14     Mercury at Greatest Elong: 18.9°E    16  05:52  Saturn 1.9°S of Moon    20  07:14  NEW MOON     21  11:39  Mercury 3.0°S of Moon    21  14:06  Moon at Perigee: 359643 km    21  15     Mercury at Perihelion     21  23:01  Venus 5.6°S of Moon    22  22:40  Mars 3.9°S of Moon    25  04:23  Moon at Descending Node     26  22:48  FIRST QUARTER MOON     29  11:07  Aldebaran 1.2°S of Moon    30  08     Mercury at Inferior Conjunction Feb 03  17:09  FULL MOON     04  02:35  Jupiter 5.2°N of Moon    05  02:17  Regulus 4.0°N of Moon    06  00:25  Moon at Apogee: 406155 km    06  11     Jupiter at Opposition     08  11:10  Moon at Ascending Node     09  10:23  Spica 3.3°S of Moon    11  21:50  LAST QUARTER MOON     12  18:10  Saturn 2.1°S of Moon    17  00:20  Mercury 3.5°S of Moon    18  17:47  NEW MOON     19  01:29  Moon at Perigee: 356992 km    20  18:56  Venus 2.0°S of Moon    20  19:28  Mars 1.5°S of Moon    21  10:05  Moon at Descending Node     21  23     Venus 0.4°S of Mars    24  10     Mercury at Greatest Elong: 26.7°W    25  11:14  FIRST QUARTER MOON     25  17:02  Aldebaran 1.0°S of Moon    25  22     Neptune in Conjunction with Sun Mar 03  01:56  Jupiter 5.5°N of Moon    04  08:29  Regulus 4.0°N of Moon    05  01:35  Moon at Apogee: 406386 km    05  12:05  FULL MOON     06  14     Mercury at Aphelion     07  15:04  Moon at Ascending Node     08  16:21  Spica 3.4°S of Moon    12  02:25  Saturn 2.3°S of Moon    13  11:48  LAST QUARTER MOON     18  22:57  Mercury 5.2°S of Moon    19  13:38  Moon at Perigee: 357584 km    20  03:36  NEW MOON     20  03:46  Total Solar Eclipse; mag=1.045    20  16:45  Vernal Equinox     20  20:19  Moon at Descending Node     21  16:13  Mars 1.0°N of Moon: Occn.    22  13:51  Venus 2.8°N of Moon    25  00:55  Aldebaran 0.9°S of Moon    27  01:43  FIRST QUARTER MOON     30  04:19  Jupiter 5.6°N of Moon    31  14:45  Regulus 4.0°N of MoonApr 01  06:59  Moon at Apogee: 406012 km    03  21:17  Moon at Ascending Node     04  06:00  Total Lunar Eclipse; mag=1.001    04  06:06  FULL MOON     04  22:21  Spica 3.5°S of Moon    06  08     Uranus in Conjunction with Sun     08  07:08  Saturn 2.2°S of Moon    08  08:34  Jupiter 2.0°S of Beehive    09  22     Mercury at Superior Conjunction     11  09:28  Venus 2.5°S of Pleiades    11  21:44  LAST QUARTER MOON     16  21:53  Moon at Perigee: 361026 km    17  07:07  Moon at Descending Node     18  07     Venus at Perihelion     18  12:57  NEW MOON     19  13:24  Venus 7.2°N of Aldebaran    19  14     Mercury at Perihelion     21  10:35  Aldebaran 0.9°S of Moon    22  13     Mercury 1.3°N of Mars    22  17     Lyrid Meteor Shower    25  17:55  FIRST QUARTER MOON     26  12:06  Jupiter 5.5°N of Moon    27  21:38  Regulus 4.0°N of Moon    28  21:55  Moon at Apogee: 405085 km    30  19:29  Mercury 1.6°S of PleiadesMay 01  03:50  Moon at Ascending Node     02  05:10  Spica 3.5°S of Moon    03  21:42  FULL MOON     05  07     Eta-Aquarid Meteor Shower    05  10:19  Saturn 2.0°S of Moon    06  23     Mercury at Greatest Elong: 21.2°E    11  04:36  LAST QUARTER MOON     14  14:37  Moon at Descending Node     14  18:23  Moon at Perigee: 366024 km    17  22:13  NEW MOON     19  00:51  Mercury 5.7°N of Moon    22  19     Saturn at Opposition     24  01:03  Jupiter 5.1°N of Moon    25  05:14  Regulus 3.8°N of Moon    25  11:19  FIRST QUARTER MOON     26  16:12  Moon at Apogee: 404246 km    28  08:40  Moon at Ascending Node     29  11:27  Venus 3.9°S of Pollux    29  12:52  Spica 3.6°S of Moon    30  11     Mercury at Inferior Conjunction Jun 01  14:02  Saturn 1.9°S of Moon    02  10:19  FULL MOON     06  13     Venus at Greatest Elong: 45.4°E    09  09:42  LAST QUARTER MOON     09  22:39  Moon at Perigee: 369713 km    10  17:30  Moon at Descending Node     13  02:59  Venus 0.5°N of Beehive    14  09     Mars in Conjunction with Sun     14  20:26  Mercury 0.0°N of Moon: Occn.    16  08:05  NEW MOON     20  05:28  Venus 5.8°N of Moon    20  17:29  Jupiter 4.7°N of Moon    21  10:38  Summer Solstice     21  13:10  Regulus 3.6°N of Moon    23  03:37  Mercury 1.8°N of Aldebaran    23  11:01  Moon at Apogee: 404134 km    24  05:03  FIRST QUARTER MOON     24  11     Mercury at Greatest Elong: 22.5°W    24  11:23  Moon at Ascending Node     25  20:58  Spica 3.8°S of Moon    28  19:27  Saturn 2.0°S of Moon    30  20     Venus 0.3°S of Jupiter
Date     CST   Event        (h:m)Jul 01  20:20  FULL MOON     05  12:54  Moon at Perigee: 367095 km    06  13     Earth at Aphelion: 1.01668 AU    07  18:07  Moon at Descending Node     08  14:24  LAST QUARTER MOON     12  11:55  Aldebaran 0.9°S of Moon    14  15:15  Venus 1.5°S of Regulus    15  19:24  NEW MOON     16  13     Mercury at Perihelion     18  11:34  Jupiter 4.1°N of Moon    18  19:06  Venus 0.4°N of Moon: Occn.    18  20:49  Regulus 3.4°N of Moon    21  05:02  Moon at Apogee: 404837 km    21  13:32  Moon at Ascending Node     23  04:45  Spica 4.0°S of Moon    23  13     Mercury at Superior Conjunction     23  22:04  FIRST QUARTER MOON     26  02:43  Saturn 2.2°S of Moon    28  08     Delta-Aquarid Meteor Shower    31  04:43  FULL MOON Aug 02  04:11  Moon at Perigee: 362135 km    03  20:53  Moon at Descending Node     06  20:03  LAST QUARTER MOON     07  01     Mercury 0.5°N of Jupiter    07  11:25  Mercury 0.8°N of Regulus    08  16     Venus at Aphelion     08  17:22  Aldebaran 0.7°S of Moon    13  00     Perseid Meteor Shower    14  08:54  NEW MOON     15  13     Venus at Inferior Conjunction     16  08:34  Mercury 2.0°N of Moon    17  17:05  Moon at Ascending Node     17  20:33  Moon at Apogee: 405852 km    19  11:46  Spica 4.2°S of Moon    19  21:35  Mars 0.5°S of Beehive    22  11:21  Saturn 2.6°S of Moon    22  13:31  FIRST QUARTER MOON     26  15     Jupiter in Conjunction with Sun     29  12:35  FULL MOON     29  13     Mercury at Aphelion     30  09:24  Moon at Perigee: 358289 km    31  04:16  Moon at Descending Node     31  20     Neptune at Opposition Sep 04  04     Mercury at Greatest Elong: 27.1°E    04  23:09  Aldebaran 0.6°S of Moon    05  03:54  LAST QUARTER MOON     09  23:53  Venus 2.7°S of Moon    13  00:41  NEW MOON     13  00:54  Partial Solar Eclipse; mag=0.788    13  22:38  Moon at Ascending Node     14  05:28  Moon at Apogee: 406466 km    15  00:15  Mercury 5.3°S of Moon    15  18:00  Spica 4.3°S of Moon    18  20:54  Saturn 2.8°S of Moon    21  02:59  FIRST QUARTER MOON     23  02:20  Autumnal Equinox     24  13:38  Mars 0.7°N of Regulus    27  15:04  Moon at Descending Node     27  19:46  Moon at Perigee: 356877 km    27  20:47  Total Lunar Eclipse; mag=1.276    27  20:50  FULL MOON     30  09     Mercury at Inferior Conjunction Oct 02  06:51  Aldebaran 0.5°S of Moon    04  15:06  LAST QUARTER MOON     08  14:32  Venus 0.7°N of Moon: Occn.    08  15:52  Regulus 3.3°N of Moon    08  18:26  Venus 2.5°S of Regulus    09  10:51  Mars 3.4°N of Moon    09  17:30  Jupiter 2.7°N of Moon    11  04:54  Moon at Ascending Node     11  06:00  Mercury 1.0°N of Moon: Occn.    11  07:17  Moon at Apogee: 406389 km    11  21     Uranus at Opposition     12  12     Mercury at Perihelion     12  18:06  NEW MOON     15  21     Mercury at Greatest Elong: 18.1°W    16  07:20  Saturn 3.0°S of Moon    17  15     Mars 0.4°N of Jupiter    20  14:31  FIRST QUARTER MOON     21  17     Orionid Meteor Shower    25  01:36  Moon at Descending Node     25  17     Venus 1.0°S of Jupiter    26  01     Venus at Greatest Elong: 46.4°W    26  06:59  Moon at Perigee: 358464 km    27  06:05  FULL MOON     29  16:45  Aldebaran 0.6°S of MoonNov 03  01     Venus 0.7°S of Mars    03  06:24  LAST QUARTER MOON     04  22:19  Regulus 3.2°N of Moon    05  17     S Taurid Meteor Shower    06  09:49  Jupiter 2.3°N of Moon    07  03:56  Mars 1.8°N of Moon    07  07:54  Venus 1.2°N of Moon    07  09:53  Moon at Ascending Node     07  15:48  Moon at Apogee: 405724 km    09  06:27  Spica 4.3°S of Moon    11  11:47  NEW MOON     12  16     N Taurid Meteor Shower    17  09     Mercury at Superior Conjunction     17  23     Leonid Meteor Shower    19  00:27  FIRST QUARTER MOON     20  17     Mars at Aphelion:  1.66606 AU    21  07:56  Moon at Descending Node     23  14:06  Moon at Perigee: 362818 km    25  16:44  FULL MOON     26  03:33  Aldebaran 0.7°S of Moon    29  00     Venus at Perihelion     29  13:20  Venus 3.9°N of Spica    29  18     Saturn in Conjunction with Sun Dec 02  05:53  Regulus 3.0°N of Moon    03  01:40  LAST QUARTER MOON     04  00:21  Jupiter 1.8°N of Moon    04  12:33  Moon at Ascending Node     05  08:56  Moon at Apogee: 404800 km    05  20:40  Mars 0.1°N of Moon: Occn.    06  13:42  Spica 4.4°S of Moon    07  10:55  Venus 0.7°S of Moon: Occn.    11  04:29  NEW MOON     14  12     Geminid Meteor Shower    18  00:01  Saturn 6.1°N of Antares    18  09:13  Moon at Descending Node     18  09:14  FIRST QUARTER MOON     21  02:53  Moon at Perigee: 368418 km    21  22:48  Winter Solstice     22  20     Ursid Meteor Shower    23  08:18  Mars 3.3°N of Spica    23  13:09  Aldebaran 0.7°S of Moon    25  05:11  FULL MOON     28  21     Mercury at Greatest Elong: 19.7°E    29  14:30  Regulus 2.7°N of Moon    31  11:55  Jupiter 1.5°N of Moon    31  14:19  Moon at Ascending Node     

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