2015 Calendar of Astronomical Events




    


2015 Phases of the Moon

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

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

Eastern Standard 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     EST   Event
        (h:m)

Jan 02  06:35  Aldebaran 1.4°S of Moon
    03  21     Quadrantid Meteor Shower
    04  01     Earth at Perihelion: 0.98328 AU
    04  23:53  FULL MOON 
    08  03:16  Jupiter 5.1°N of Moon
    08  20:34  Regulus 4.1°N of Moon
    09  13:17  Moon at Apogee: 405411 km
    10  20     Mercury 0.6° of Venus
    12  10:33  Moon at Ascending Node 
    13  04:27  Spica 3.1°S of Moon
    13  04:47  LAST QUARTER MOON 
    14  15     Mercury at Greatest Elong: 18.9°E
    16  06:52  Saturn 1.9°S of Moon
    20  08:14  NEW MOON 
    21  12:39  Mercury 3.0°S of Moon
    21  15:06  Moon at Perigee: 359643 km
    21  16     Mercury at Perihelion 
    22  00:01  Venus 5.6°S of Moon
    22  23:40  Mars 3.9°S of Moon
    25  05:23  Moon at Descending Node 
    26  23:48  FIRST QUARTER MOON 
    29  12:07  Aldebaran 1.2°S of Moon
    30  09     Mercury at Inferior Conjunction 

Feb 03  18:09  FULL MOON 
    04  03:35  Jupiter 5.2°N of Moon
    05  03:17  Regulus 4.0°N of Moon
    06  01:25  Moon at Apogee: 406155 km
    06  12     Jupiter at Opposition 
    08  12:10  Moon at Ascending Node 
    09  11:23  Spica 3.3°S of Moon
    11  22:50  LAST QUARTER MOON 
    12  19:10  Saturn 2.1°S of Moon
    17  01:20  Mercury 3.5°S of Moon
    18  18:47  NEW MOON 
    19  02:29  Moon at Perigee: 356992 km
    20  19:56  Venus 2.0°S of Moon
    20  20:28  Mars 1.5°S of Moon
    21  11:05  Moon at Descending Node 
    24  11     Mercury at Greatest Elong: 26.7°W
    25  12:14  FIRST QUARTER MOON 
    25  18:02  Aldebaran 1.0°S of Moon
    25  23     Neptune in Conjunction with Sun 

Mar 03  02:56  Jupiter 5.5°N of Moon
    04  09:29  Regulus 4.0°N of Moon
    05  02:35  Moon at Apogee: 406386 km
    05  13:05  FULL MOON 
    06  15     Mercury at Aphelion 
    07  16:04  Moon at Ascending Node 
    08  17:21  Spica 3.4°S of Moon
    12  03:25  Saturn 2.3°S of Moon
    13  12:48  LAST QUARTER MOON 
    18  23:57  Mercury 5.2°S of Moon
    19  14:38  Moon at Perigee: 357584 km
    20  04:36  NEW MOON 
    20  04:46  Total Solar Eclipse; mag=1.045
    20  17:45  Vernal Equinox 
    20  21:19  Moon at Descending Node 
    21  17:13  Mars 1.0°N of Moon: Occn.
    22  14:51  Venus 2.8°N of Moon
    25  01:55  Aldebaran 0.9°S of Moon
    27  02:43  FIRST QUARTER MOON 
    30  05:19  Jupiter 5.6°N of Moon
    31  15:45  Regulus 4.0°N of Moon

Apr 01  07:59  Moon at Apogee: 406012 km
    03  22:17  Moon at Ascending Node 
    04  07:00  Total Lunar Eclipse; mag=1.001
    04  07:06  FULL MOON 
    04  23:21  Spica 3.5°S of Moon
    06  09     Uranus in Conjunction with Sun 
    08  08:08  Saturn 2.2°S of Moon
    08  09:34  Jupiter 2.0°S of Beehive
    09  23     Mercury at Superior Conjunction 
    11  10:28  Venus 2.5°S of Pleiades
    11  22:44  LAST QUARTER MOON 
    16  22:53  Moon at Perigee: 361026 km
    17  08:07  Moon at Descending Node 
    18  08     Venus at Perihelion 
    18  13:57  NEW MOON 
    19  14:24  Venus 7.2°N of Aldebaran
    19  15     Mercury at Perihelion 
    21  11:35  Aldebaran 0.9°S of Moon
    22  14     Mercury 1.3° of Mars
    22  18     Lyrid Meteor Shower
    25  18:55  FIRST QUARTER MOON 
    26  13:06  Jupiter 5.5°N of Moon
    27  22:38  Regulus 4.0°N of Moon
    28  22:55  Moon at Apogee: 405085 km
    30  20:29  Mercury 1.6°S of Pleiades

May 01  04:50  Moon at Ascending Node 
    02  06:10  Spica 3.5°S of Moon
    03  22:42  FULL MOON 
    05  08     Eta-Aquarid Meteor Shower
    05  11:19  Saturn 2.0°S of Moon
    07  00     Mercury at Greatest Elong: 21.2°E
    11  05:36  LAST QUARTER MOON 
    14  15:37  Moon at Descending Node 
    14  19:23  Moon at Perigee: 366024 km
    17  23:13  NEW MOON 
    19  01:51  Mercury 5.7°N of Moon
    22  20     Saturn at Opposition 
    24  02:03  Jupiter 5.1°N of Moon
    25  06:14  Regulus 3.8°N of Moon
    25  12:19  FIRST QUARTER MOON 
    26  17:12  Moon at Apogee: 404246 km
    28  09:40  Moon at Ascending Node 
    29  12:27  Venus 3.9°S of Pollux
    29  13:52  Spica 3.6°S of Moon
    30  12     Mercury at Inferior Conjunction 

Jun 01  15:02  Saturn 1.9°S of Moon
    02  11:19  FULL MOON 
    06  14     Venus at Greatest Elong: 45.4°E
    09  10:42  LAST QUARTER MOON 
    09  23:39  Moon at Perigee: 369713 km
    10  18:30  Moon at Descending Node 
    13  03:59  Venus 0.5°N of Beehive
    14  10     Mars in Conjunction with Sun 
    14  21:26  Mercury 0.0°N of Moon: Occn.
    16  09:05  NEW MOON 
    20  06:28  Venus 5.8°N of Moon
    20  18:29  Jupiter 4.7°N of Moon
    21  11:38  Summer Solstice 
    21  14:10  Regulus 3.6°N of Moon
    23  04:37  Mercury 1.8°N of Aldebaran
    23  12:01  Moon at Apogee: 404134 km
    24  06:03  FIRST QUARTER MOON 
    24  12     Mercury at Greatest Elong: 22.5°W
    24  12:23  Moon at Ascending Node 
    25  21:58  Spica 3.8°S of Moon
    28  20:27  Saturn 2.0°S of Moon

Date     EST   Event
        (h:m)

Jul 01  21:20  FULL MOON 
    05  13:54  Moon at Perigee: 367095 km
    06  14     Earth at Aphelion: 1.01668 AU
    07  19:07  Moon at Descending Node 
    08  15:24  LAST QUARTER MOON 
    12  12:55  Aldebaran 0.9°S of Moon
    14  16:15  Venus 1.5°S of Regulus
    15  20:24  NEW MOON 
    16  14     Mercury at Perihelion 
    18  12:34  Jupiter 4.1°N of Moon
    18  20:06  Venus 0.4°N of Moon: Occn.
    18  21:49  Regulus 3.4°N of Moon
    21  06:02  Moon at Apogee: 404837 km
    21  14:32  Moon at Ascending Node 
    23  05:45  Spica 4.0°S of Moon
    23  14     Mercury at Superior Conjunction 
    23  23:04  FIRST QUARTER MOON 
    26  03:43  Saturn 2.2°S of Moon
    28  09     Delta-Aquarid Meteor Shower
    31  05:43  FULL MOON 

Aug 02  05:11  Moon at Perigee: 362135 km
    03  21:53  Moon at Descending Node 
    06  21:03  LAST QUARTER MOON 
    07  02     Mercury 0.5° of Jupiter
    07  12:25  Mercury 0.8°N of Regulus
    08  17     Venus at Aphelion 
    08  18:22  Aldebaran 0.7°S of Moon
    13  01     Perseid Meteor Shower
    14  09:54  NEW MOON 
    15  14     Venus at Inferior Conjunction 
    16  09:34  Mercury 2.0°N of Moon
    17  18:05  Moon at Ascending Node 
    17  21:33  Moon at Apogee: 405852 km
    19  12:46  Spica 4.2°S of Moon
    19  22:35  Mars 0.5°S of Beehive
    22  12:21  Saturn 2.6°S of Moon
    22  14:31  FIRST QUARTER MOON 
    26  16     Jupiter in Conjunction with Sun 
    29  13:35  FULL MOON 
    29  14     Mercury at Aphelion 
    30  10:24  Moon at Perigee: 358289 km
    31  05:16  Moon at Descending Node 
    31  21     Neptune at Opposition 

Sep 04  05     Mercury at Greatest Elong: 27.1°E
    05  00:09  Aldebaran 0.6°S of Moon
    05  04:54  LAST QUARTER MOON 
    10  00:53  Venus 2.7°S of Moon
    13  01:41  NEW MOON 
    13  01:54  Partial Solar Eclipse; mag=0.788
    13  23:38  Moon at Ascending Node 
    14  06:28  Moon at Apogee: 406466 km
    15  01:15  Mercury 5.3°S of Moon
    15  19:00  Spica 4.3°S of Moon
    18  21:54  Saturn 2.8°S of Moon
    21  03:59  FIRST QUARTER MOON 
    23  03:20  Autumnal Equinox 
    24  14:38  Mars 0.7°N of Regulus
    27  16:04  Moon at Descending Node 
    27  20:46  Moon at Perigee: 356877 km
    27  21:47  Total Lunar Eclipse; mag=1.276
    27  21:50  FULL MOON 
    30  10     Mercury at Inferior Conjunction 

Oct 02  07:51  Aldebaran 0.5°S of Moon
    04  16:06  LAST QUARTER MOON 
    08  15:32  Venus 0.7°N of Moon: Occn.
    08  16:52  Regulus 3.3°N of Moon
    08  19:26  Venus 2.5°S of Regulus
    09  11:51  Mars 3.4°N of Moon
    09  18:30  Jupiter 2.7°N of Moon
    11  05:54  Moon at Ascending Node 
    11  07:00  Mercury 1.0°N of Moon: Occn.
    11  08:17  Moon at Apogee: 406389 km
    11  22     Uranus at Opposition 
    12  13     Mercury at Perihelion 
    12  19:06  NEW MOON 
    15  22     Mercury at Greatest Elong: 18.1°W
    16  08:20  Saturn 3.0°S of Moon
    20  15:31  FIRST QUARTER MOON 
    21  18     Orionid Meteor Shower
    25  02:36  Moon at Descending Node 
    26  02     Venus at Greatest Elong: 46.4°W
    26  07:59  Moon at Perigee: 358464 km
    27  07:05  FULL MOON 
    29  17:45  Aldebaran 0.6°S of Moon

Nov 03  07:24  LAST QUARTER MOON 
    04  23:19  Regulus 3.2°N of Moon
    05  18     S Taurid Meteor Shower
    06  10:49  Jupiter 2.3°N of Moon
    07  04:56  Mars 1.8°N of Moon
    07  08:54  Venus 1.2°N of Moon
    07  10:53  Moon at Ascending Node 
    07  16:48  Moon at Apogee: 405724 km
    09  07:27  Spica 4.3°S of Moon
    11  12:47  NEW MOON 
    12  17     N Taurid Meteor Shower
    17  10     Mercury at Superior Conjunction 
    18  00     Leonid Meteor Shower
    19  01:27  FIRST QUARTER MOON 
    20  19     Mars at Aphelion 
    21  08:56  Moon at Descending Node 
    23  15:06  Moon at Perigee: 362818 km
    25  17:44  FULL MOON 
    26  04:33  Aldebaran 0.7°S of Moon
    29  01     Venus at Perihelion 
    29  14:20  Venus 3.9°N of Spica
    29  19     Saturn in Conjunction with Sun 

Dec 02  06:53  Regulus 3.0°N of Moon
    03  02:40  LAST QUARTER MOON 
    04  01:21  Jupiter 1.8°N of Moon
    04  13:33  Moon at Ascending Node 
    05  09:56  Moon at Apogee: 404800 km
    05  21:40  Mars 0.1°N of Moon: Occn.
    06  14:42  Spica 4.4°S of Moon
    07  11:55  Venus 0.7°S of Moon: Occn.
    11  05:29  NEW MOON 
    14  13     Geminid Meteor Shower
    18  01:01  Saturn 6.1°N of Antares
    18  10:13  Moon at Descending Node 
    18  10:14  FIRST QUARTER MOON 
    21  03:53  Moon at Perigee: 368418 km
    21  23:48  Winter Solstice 
    22  21     Ursid Meteor Shower
    23  09:18  Mars 3.3°N of Spica
    23  14:09  Aldebaran 0.7°S of Moon
    25  06:11  FULL MOON 
    28  22     Mercury at Greatest Elong: 19.7°E
    29  15:30  Regulus 2.7°N of Moon
    31  12:55  Jupiter 1.5°N of Moon
    31  15:19  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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