2015 Calendar of Astronomical Events



2015 Phases of the Moon

Greenwich Mean 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.

2015 Phases of the Moon
Greenwich Mean Time
New Moon First Quarter Full Moon Last Quarter
-- Jan 5 04:53 Jan 13 09:47
Jan 20 13:14 Jan 27 04:48 Feb 3 23:09 Feb 12 03:50
Feb 18 23:47 Feb 25 17:14 Mar 5 18:06 Mar 13 17:48
Mar 20 09:36 T Mar 27 07:43 Apr 4 12:06 t Apr 12 03:44
Apr 18 18:57 Apr 25 23:55 May 4 03:42 May 11 10:36
May 18 04:13 May 25 17:19 Jun 2 16:19 Jun 9 15:42
Jun 16 14:05 Jun 24 11:03 Jul 2 02:20 Jul 8 20:24
Jul 16 01:24 Jul 24 04:04 Jul 31 10:43 Aug 7 02:03
Aug 14 14:54 Aug 22 19:31 Aug 29 18:35 Sep 5 09:54
Sep 13 06:41 P Sep 21 08:59 Sep 28 02:50 t Oct 4 21:06
Oct 13 00:06 Oct 20 20:31 Oct 27 12:05 Nov 3 12:24
Nov 11 17:47 Nov 19 06:27 Nov 25 22:44 Dec 3 07:40
Dec 11 10:29 Dec 18 15:14 Dec 25 11:11 -

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.



2015 Calendar of Astronomical Events

Greenwich Mean 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.

2015 Calendar of Astronomical Events
January - June July - December
Date     GMT   Event
        (h:m)

Jan 02  11:35  Aldebaran 1.4°S of Moon
    04  02     Quadrantid Meteor Shower
    04  06     Earth at Perihelion: 0.98328 AU
    05  04:53  FULL MOON 
    08  08:16  Jupiter 5.1°N of Moon
    09  01:34  Regulus 4.1°N of Moon
    09  18:17  Moon at Apogee: 405411 km
    11  01     Mercury 0.6° of Venus
    12  15:33  Moon at Ascending Node 
    13  09:27  Spica 3.1°S of Moon
    13  09:47  LAST QUARTER MOON 
    14  20     Mercury at Greatest Elong: 18.9°E
    16  11:52  Saturn 1.9°S of Moon
    20  13:14  NEW MOON 
    21  17:39  Mercury 3.0°S of Moon
    21  20:06  Moon at Perigee: 359643 km
    21  21     Mercury at Perihelion 
    22  05:01  Venus 5.6°S of Moon
    23  04:40  Mars 3.9°S of Moon
    25  10:23  Moon at Descending Node 
    27  04:48  FIRST QUARTER MOON 
    29  17:07  Aldebaran 1.2°S of Moon
    30  14     Mercury at Inferior Conjunction 

Feb 03  23:09  FULL MOON 
    04  08:35  Jupiter 5.2°N of Moon
    05  08:17  Regulus 4.0°N of Moon
    06  06:25  Moon at Apogee: 406155 km
    06  17     Jupiter at Opposition 
    08  17:10  Moon at Ascending Node 
    09  16:23  Spica 3.3°S of Moon
    12  03:50  LAST QUARTER MOON 
    13  00:10  Saturn 2.1°S of Moon
    17  06:20  Mercury 3.5°S of Moon
    18  23:47  NEW MOON 
    19  07:29  Moon at Perigee: 356992 km
    21  00:56  Venus 2.0°S of Moon
    21  01:28  Mars 1.5°S of Moon
    21  16:05  Moon at Descending Node 
    24  16     Mercury at Greatest Elong: 26.7°W
    25  17:14  FIRST QUARTER MOON 
    25  23:02  Aldebaran 1.0°S of Moon
    26  04     Neptune in Conjunction with Sun 

Mar 03  07:56  Jupiter 5.5°N of Moon
    04  14:29  Regulus 4.0°N of Moon
    05  07:35  Moon at Apogee: 406386 km
    05  18:05  FULL MOON 
    06  20     Mercury at Aphelion 
    07  21:04  Moon at Ascending Node 
    08  22:21  Spica 3.4°S of Moon
    12  08:25  Saturn 2.3°S of Moon
    13  17:48  LAST QUARTER MOON 
    19  04:57  Mercury 5.2°S of Moon
    19  19:38  Moon at Perigee: 357584 km
    20  09:36  NEW MOON 
    20  09:46  Total Solar Eclipse; mag=1.045
    20  22:45  Vernal Equinox 
    21  02:19  Moon at Descending Node 
    21  22:13  Mars 1.0°N of Moon: Occn.
    22  19:51  Venus 2.8°N of Moon
    25  06:55  Aldebaran 0.9°S of Moon
    27  07:43  FIRST QUARTER MOON 
    30  10:19  Jupiter 5.6°N of Moon
    31  20:45  Regulus 4.0°N of Moon

Apr 01  12:59  Moon at Apogee: 406012 km
    04  03:17  Moon at Ascending Node 
    04  12:00  Total Lunar Eclipse; mag=1.001
    04  12:06  FULL MOON 
    05  04:21  Spica 3.5°S of Moon
    06  14     Uranus in Conjunction with Sun 
    08  13:08  Saturn 2.2°S of Moon
    08  14:34  Jupiter 2.0°S of Beehive
    10  04     Mercury at Superior Conjunction 
    11  15:28  Venus 2.5°S of Pleiades
    12  03:44  LAST QUARTER MOON 
    17  03:53  Moon at Perigee: 361026 km
    17  13:07  Moon at Descending Node 
    18  13     Venus at Perihelion 
    18  18:57  NEW MOON 
    19  19:24  Venus 7.2°N of Aldebaran
    19  20     Mercury at Perihelion 
    21  16:35  Aldebaran 0.9°S of Moon
    22  19     Mercury 1.3° of Mars
    22  23     Lyrid Meteor Shower
    25  23:55  FIRST QUARTER MOON 
    26  18:06  Jupiter 5.5°N of Moon
    28  03:38  Regulus 4.0°N of Moon
    29  03:55  Moon at Apogee: 405085 km

May 01  01:29  Mercury 1.6°S of Pleiades
    01  09:50  Moon at Ascending Node 
    02  11:10  Spica 3.5°S of Moon
    04  03:42  FULL MOON 
    05  13     Eta-Aquarid Meteor Shower
    05  16:19  Saturn 2.0°S of Moon
    07  05     Mercury at Greatest Elong: 21.2°E
    11  10:36  LAST QUARTER MOON 
    14  20:37  Moon at Descending Node 
    15  00:23  Moon at Perigee: 366024 km
    18  04:13  NEW MOON 
    19  06:51  Mercury 5.7°N of Moon
    23  01     Saturn at Opposition 
    24  07:03  Jupiter 5.1°N of Moon
    25  11:14  Regulus 3.8°N of Moon
    25  17:19  FIRST QUARTER MOON 
    26  22:12  Moon at Apogee: 404246 km
    28  14:40  Moon at Ascending Node 
    29  17:27  Venus 3.9°S of Pollux
    29  18:52  Spica 3.6°S of Moon
    30  17     Mercury at Inferior Conjunction 

Jun 01  20:02  Saturn 1.9°S of Moon
    02  16:19  FULL MOON 
    06  19     Venus at Greatest Elong: 45.4°E
    09  15:42  LAST QUARTER MOON 
    10  04:39  Moon at Perigee: 369713 km
    10  23:30  Moon at Descending Node 
    13  08:59  Venus 0.5°N of Beehive
    14  15     Mars in Conjunction with Sun 
    15  02:26  Mercury 0.0°N of Moon: Occn.
    16  14:05  NEW MOON 
    20  11:28  Venus 5.8°N of Moon
    20  23:29  Jupiter 4.7°N of Moon
    21  16:38  Summer Solstice 
    21  19:10  Regulus 3.6°N of Moon
    23  09:37  Mercury 1.8°N of Aldebaran
    23  17:01  Moon at Apogee: 404134 km
    24  11:03  FIRST QUARTER MOON 
    24  17     Mercury at Greatest Elong: 22.5°W
    24  17:23  Moon at Ascending Node 
    26  02:58  Spica 3.8°S of Moon
    29  01:27  Saturn 2.0°S of Moon

Date     GMT   Event
        (h:m)

Jul 02  02:20  FULL MOON 
    05  18:54  Moon at Perigee: 367095 km
    06  19     Earth at Aphelion: 1.01668 AU
    08  00:07  Moon at Descending Node 
    08  20:24  LAST QUARTER MOON 
    12  17:55  Aldebaran 0.9°S of Moon
    14  21:15  Venus 1.5°S of Regulus
    16  01:24  NEW MOON 
    16  19     Mercury at Perihelion 
    18  17:34  Jupiter 4.1°N of Moon
    19  01:06  Venus 0.4°N of Moon: Occn.
    19  02:49  Regulus 3.4°N of Moon
    21  11:02  Moon at Apogee: 404837 km
    21  19:32  Moon at Ascending Node 
    23  10:45  Spica 4.0°S of Moon
    23  19     Mercury at Superior Conjunction 
    24  04:04  FIRST QUARTER MOON 
    26  08:43  Saturn 2.2°S of Moon
    28  14     Delta-Aquarid Meteor Shower
    31  10:43  FULL MOON 

Aug 02  10:11  Moon at Perigee: 362135 km
    04  02:53  Moon at Descending Node 
    07  02:03  LAST QUARTER MOON 
    07  07     Mercury 0.5° of Jupiter
    07  17:25  Mercury 0.8°N of Regulus
    08  22     Venus at Aphelion 
    08  23:22  Aldebaran 0.7°S of Moon
    13  06     Perseid Meteor Shower
    14  14:54  NEW MOON 
    15  19     Venus at Inferior Conjunction 
    16  14:34  Mercury 2.0°N of Moon
    17  23:05  Moon at Ascending Node 
    18  02:33  Moon at Apogee: 405852 km
    19  17:46  Spica 4.2°S of Moon
    20  03:35  Mars 0.5°S of Beehive
    22  17:21  Saturn 2.6°S of Moon
    22  19:31  FIRST QUARTER MOON 
    26  21     Jupiter in Conjunction with Sun 
    29  18:35  FULL MOON 
    29  19     Mercury at Aphelion 
    30  15:24  Moon at Perigee: 358289 km
    31  10:16  Moon at Descending Node 

Sep 01  02     Neptune at Opposition 
    04  10     Mercury at Greatest Elong: 27.1°E
    05  05:09  Aldebaran 0.6°S of Moon
    05  09:54  LAST QUARTER MOON 
    10  05:53  Venus 2.7°S of Moon
    13  06:41  NEW MOON 
    13  06:54  Partial Solar Eclipse; mag=0.788
    14  04:38  Moon at Ascending Node 
    14  11:28  Moon at Apogee: 406466 km
    15  06:15  Mercury 5.3°S of Moon
    16  00:00  Spica 4.3°S of Moon
    19  02:54  Saturn 2.8°S of Moon
    21  08:59  FIRST QUARTER MOON 
    23  08:20  Autumnal Equinox 
    24  19:38  Mars 0.7°N of Regulus
    27  21:04  Moon at Descending Node 
    28  01:46  Moon at Perigee: 356877 km
    28  02:47  Total Lunar Eclipse; mag=1.276
    28  02:50  FULL MOON 
    30  15     Mercury at Inferior Conjunction 

Oct 02  12:51  Aldebaran 0.5°S of Moon
    04  21:06  LAST QUARTER MOON 
    08  20:32  Venus 0.7°N of Moon: Occn.
    08  21:52  Regulus 3.3°N of Moon
    09  00:26  Venus 2.5°S of Regulus
    09  16:51  Mars 3.4°N of Moon
    09  23:30  Jupiter 2.7°N of Moon
    11  10:54  Moon at Ascending Node 
    11  12:00  Mercury 1.0°N of Moon: Occn.
    11  13:17  Moon at Apogee: 406389 km
    12  03     Uranus at Opposition 
    12  18     Mercury at Perihelion 
    13  00:06  NEW MOON 
    16  03     Mercury at Greatest Elong: 18.1°W
    16  13:20  Saturn 3.0°S of Moon
    20  20:31  FIRST QUARTER MOON 
    21  23     Orionid Meteor Shower
    25  07:36  Moon at Descending Node 
    26  07     Venus at Greatest Elong: 46.4°W
    26  12:59  Moon at Perigee: 358464 km
    27  12:05  FULL MOON 
    29  22:45  Aldebaran 0.6°S of Moon

Nov 03  12:24  LAST QUARTER MOON 
    05  04:19  Regulus 3.2°N of Moon
    05  23     S Taurid Meteor Shower
    06  15:49  Jupiter 2.3°N of Moon
    07  09:56  Mars 1.8°N of Moon
    07  13:54  Venus 1.2°N of Moon
    07  15:53  Moon at Ascending Node 
    07  21:48  Moon at Apogee: 405724 km
    09  12:27  Spica 4.3°S of Moon
    11  17:47  NEW MOON 
    12  22     N Taurid Meteor Shower
    17  15     Mercury at Superior Conjunction 
    18  05     Leonid Meteor Shower
    19  06:27  FIRST QUARTER MOON 
    21  00     Mars at Aphelion 
    21  13:56  Moon at Descending Node 
    23  20:06  Moon at Perigee: 362818 km
    25  22:44  FULL MOON 
    26  09:33  Aldebaran 0.7°S of Moon
    29  06     Venus at Perihelion 
    29  19:20  Venus 3.9°N of Spica
    30  00     Saturn in Conjunction with Sun 

Dec 02  11:53  Regulus 3.0°N of Moon
    03  07:40  LAST QUARTER MOON 
    04  06:21  Jupiter 1.8°N of Moon
    04  18:33  Moon at Ascending Node 
    05  14:56  Moon at Apogee: 404800 km
    06  02:40  Mars 0.1°N of Moon: Occn.
    06  19:42  Spica 4.4°S of Moon
    07  16:55  Venus 0.7°S of Moon: Occn.
    11  10:29  NEW MOON 
    14  18     Geminid Meteor Shower
    18  06:01  Saturn 6.1°N of Antares
    18  15:13  Moon at Descending Node 
    18  15:14  FIRST QUARTER MOON 
    21  08:53  Moon at Perigee: 368418 km
    22  04:48  Winter Solstice 
    23  02     Ursid Meteor Shower
    23  14:18  Mars 3.3°N of Spica
    23  19:09  Aldebaran 0.7°S of Moon
    25  11:11  FULL MOON 
    29  03     Mercury at Greatest Elong: 19.7°E
    29  20:30  Regulus 2.7°N of Moon
    31  17:55  Jupiter 1.5°N of Moon
    31  20:19  Moon at Ascending Node 

    

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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