2015 Calendar of Astronomical Events




    


2015 Phases of the Moon

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

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

Hawaiian 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     HST   Event
        (h:m)

Jan 02  01:35  Aldebaran 1.4°S of Moon
    03  16     Quadrantid Meteor Shower
    03  20     Earth at Perihelion: 0.98328 AU
    04  18:53  FULL MOON 
    07  22:16  Jupiter 5.1°N of Moon
    08  15:34  Regulus 4.1°N of Moon
    09  08:17  Moon at Apogee: 405411 km
    10  15     Mercury 0.6° of Venus
    12  05:33  Moon at Ascending Node 
    12  23:27  Spica 3.1°S of Moon
    12  23:47  LAST QUARTER MOON 
    14  10     Mercury at Greatest Elong: 18.9°E
    16  01:52  Saturn 1.9°S of Moon
    20  03:14  NEW MOON 
    21  07:39  Mercury 3.0°S of Moon
    21  10:06  Moon at Perigee: 359643 km
    21  11     Mercury at Perihelion 
    21  19:01  Venus 5.6°S of Moon
    22  18:40  Mars 3.9°S of Moon
    25  00:23  Moon at Descending Node 
    26  18:48  FIRST QUARTER MOON 
    29  07:07  Aldebaran 1.2°S of Moon
    30  04     Mercury at Inferior Conjunction 

Feb 03  13:09  FULL MOON 
    03  22:35  Jupiter 5.2°N of Moon
    04  22:17  Regulus 4.0°N of Moon
    05  20:25  Moon at Apogee: 406155 km
    06  07     Jupiter at Opposition 
    08  07:10  Moon at Ascending Node 
    09  06:23  Spica 3.3°S of Moon
    11  17:50  LAST QUARTER MOON 
    12  14:10  Saturn 2.1°S of Moon
    16  20:20  Mercury 3.5°S of Moon
    18  13:47  NEW MOON 
    18  21:29  Moon at Perigee: 356992 km
    20  14:56  Venus 2.0°S of Moon
    20  15:28  Mars 1.5°S of Moon
    21  06:05  Moon at Descending Node 
    24  06     Mercury at Greatest Elong: 26.7°W
    25  07:14  FIRST QUARTER MOON 
    25  13:02  Aldebaran 1.0°S of Moon
    25  18     Neptune in Conjunction with Sun 

Mar 02  21:56  Jupiter 5.5°N of Moon
    04  04:29  Regulus 4.0°N of Moon
    04  21:35  Moon at Apogee: 406386 km
    05  08:05  FULL MOON 
    06  10     Mercury at Aphelion 
    07  11:04  Moon at Ascending Node 
    08  12:21  Spica 3.4°S of Moon
    11  22:25  Saturn 2.3°S of Moon
    13  07:48  LAST QUARTER MOON 
    18  18:57  Mercury 5.2°S of Moon
    19  09:38  Moon at Perigee: 357584 km
    19  23:36  NEW MOON 
    19  23:46  Total Solar Eclipse; mag=1.045
    20  12:45  Vernal Equinox 
    20  16:19  Moon at Descending Node 
    21  12:13  Mars 1.0°N of Moon: Occn.
    22  09:51  Venus 2.8°N of Moon
    24  20:55  Aldebaran 0.9°S of Moon
    26  21:43  FIRST QUARTER MOON 
    30  00:19  Jupiter 5.6°N of Moon
    31  10:45  Regulus 4.0°N of Moon

Apr 01  02:59  Moon at Apogee: 406012 km
    03  17:17  Moon at Ascending Node 
    04  02:00  Total Lunar Eclipse; mag=1.001
    04  02:06  FULL MOON 
    04  18:21  Spica 3.5°S of Moon
    06  04     Uranus in Conjunction with Sun 
    08  03:08  Saturn 2.2°S of Moon
    08  04:34  Jupiter 2.0°S of Beehive
    09  18     Mercury at Superior Conjunction 
    11  05:28  Venus 2.5°S of Pleiades
    11  17:44  LAST QUARTER MOON 
    16  17:53  Moon at Perigee: 361026 km
    17  03:07  Moon at Descending Node 
    18  03     Venus at Perihelion 
    18  08:57  NEW MOON 
    19  09:24  Venus 7.2°N of Aldebaran
    19  10     Mercury at Perihelion 
    21  06:35  Aldebaran 0.9°S of Moon
    22  09     Mercury 1.3° of Mars
    22  13     Lyrid Meteor Shower
    25  13:55  FIRST QUARTER MOON 
    26  08:06  Jupiter 5.5°N of Moon
    27  17:38  Regulus 4.0°N of Moon
    28  17:55  Moon at Apogee: 405085 km
    30  15:29  Mercury 1.6°S of Pleiades
    30  23:50  Moon at Ascending Node 

May 02  01:10  Spica 3.5°S of Moon
    03  17:42  FULL MOON 
    05  03     Eta-Aquarid Meteor Shower
    05  06:19  Saturn 2.0°S of Moon
    06  19     Mercury at Greatest Elong: 21.2°E
    11  00:36  LAST QUARTER MOON 
    14  10:37  Moon at Descending Node 
    14  14:23  Moon at Perigee: 366024 km
    17  18:13  NEW MOON 
    18  20:51  Mercury 5.7°N of Moon
    22  15     Saturn at Opposition 
    23  21:03  Jupiter 5.1°N of Moon
    25  01:14  Regulus 3.8°N of Moon
    25  07:19  FIRST QUARTER MOON 
    26  12:12  Moon at Apogee: 404246 km
    28  04:40  Moon at Ascending Node 
    29  07:27  Venus 3.9°S of Pollux
    29  08:52  Spica 3.6°S of Moon
    30  07     Mercury at Inferior Conjunction 

Jun 01  10:02  Saturn 1.9°S of Moon
    02  06:19  FULL MOON 
    06  09     Venus at Greatest Elong: 45.4°E
    09  05:42  LAST QUARTER MOON 
    09  18:39  Moon at Perigee: 369713 km
    10  13:30  Moon at Descending Node 
    12  22:59  Venus 0.5°N of Beehive
    14  05     Mars in Conjunction with Sun 
    14  16:26  Mercury 0.0°N of Moon: Occn.
    16  04:05  NEW MOON 
    20  01:28  Venus 5.8°N of Moon
    20  13:29  Jupiter 4.7°N of Moon
    21  06:38  Summer Solstice 
    21  09:10  Regulus 3.6°N of Moon
    22  23:37  Mercury 1.8°N of Aldebaran
    23  07:01  Moon at Apogee: 404134 km
    24  01:03  FIRST QUARTER MOON 
    24  07     Mercury at Greatest Elong: 22.5°W
    24  07:23  Moon at Ascending Node 
    25  16:58  Spica 3.8°S of Moon
    28  15:27  Saturn 2.0°S of Moon

Date     HST   Event
        (h:m)

Jul 01  16:20  FULL MOON 
    05  08:54  Moon at Perigee: 367095 km
    06  09     Earth at Aphelion: 1.01668 AU
    07  14:07  Moon at Descending Node 
    08  10:24  LAST QUARTER MOON 
    12  07:55  Aldebaran 0.9°S of Moon
    14  11:15  Venus 1.5°S of Regulus
    15  15:24  NEW MOON 
    16  09     Mercury at Perihelion 
    18  07:34  Jupiter 4.1°N of Moon
    18  15:06  Venus 0.4°N of Moon: Occn.
    18  16:49  Regulus 3.4°N of Moon
    21  01:02  Moon at Apogee: 404837 km
    21  09:32  Moon at Ascending Node 
    23  00:45  Spica 4.0°S of Moon
    23  09     Mercury at Superior Conjunction 
    23  18:04  FIRST QUARTER MOON 
    25  22:43  Saturn 2.2°S of Moon
    28  04     Delta-Aquarid Meteor Shower
    31  00:43  FULL MOON 

Aug 02  00:11  Moon at Perigee: 362135 km
    03  16:53  Moon at Descending Node 
    06  16:03  LAST QUARTER MOON 
    06  21     Mercury 0.5° of Jupiter
    07  07:25  Mercury 0.8°N of Regulus
    08  12     Venus at Aphelion 
    08  13:22  Aldebaran 0.7°S of Moon
    12  20     Perseid Meteor Shower
    14  04:54  NEW MOON 
    15  09     Venus at Inferior Conjunction 
    16  04:34  Mercury 2.0°N of Moon
    17  13:05  Moon at Ascending Node 
    17  16:33  Moon at Apogee: 405852 km
    19  07:46  Spica 4.2°S of Moon
    19  17:35  Mars 0.5°S of Beehive
    22  07:21  Saturn 2.6°S of Moon
    22  09:31  FIRST QUARTER MOON 
    26  11     Jupiter in Conjunction with Sun 
    29  08:35  FULL MOON 
    29  09     Mercury at Aphelion 
    30  05:24  Moon at Perigee: 358289 km
    31  00:16  Moon at Descending Node 
    31  16     Neptune at Opposition 

Sep 04  00     Mercury at Greatest Elong: 27.1°E
    04  19:09  Aldebaran 0.6°S of Moon
    04  23:54  LAST QUARTER MOON 
    09  19:53  Venus 2.7°S of Moon
    12  20:41  NEW MOON 
    12  20:54  Partial Solar Eclipse; mag=0.788
    13  18:38  Moon at Ascending Node 
    14  01:28  Moon at Apogee: 406466 km
    14  20:15  Mercury 5.3°S of Moon
    15  14:00  Spica 4.3°S of Moon
    18  16:54  Saturn 2.8°S of Moon
    20  22:59  FIRST QUARTER MOON 
    22  22:20  Autumnal Equinox 
    24  09:38  Mars 0.7°N of Regulus
    27  11:04  Moon at Descending Node 
    27  15:46  Moon at Perigee: 356877 km
    27  16:47  Total Lunar Eclipse; mag=1.276
    27  16:50  FULL MOON 
    30  05     Mercury at Inferior Conjunction 

Oct 02  02:51  Aldebaran 0.5°S of Moon
    04  11:06  LAST QUARTER MOON 
    08  10:32  Venus 0.7°N of Moon: Occn.
    08  11:52  Regulus 3.3°N of Moon
    08  14:26  Venus 2.5°S of Regulus
    09  06:51  Mars 3.4°N of Moon
    09  13:30  Jupiter 2.7°N of Moon
    11  00:54  Moon at Ascending Node 
    11  02:00  Mercury 1.0°N of Moon: Occn.
    11  03:17  Moon at Apogee: 406389 km
    11  17     Uranus at Opposition 
    12  08     Mercury at Perihelion 
    12  14:06  NEW MOON 
    15  17     Mercury at Greatest Elong: 18.1°W
    16  03:20  Saturn 3.0°S of Moon
    20  10:31  FIRST QUARTER MOON 
    21  13     Orionid Meteor Shower
    24  21:36  Moon at Descending Node 
    25  21     Venus at Greatest Elong: 46.4°W
    26  02:59  Moon at Perigee: 358464 km
    27  02:05  FULL MOON 
    29  12:45  Aldebaran 0.6°S of Moon

Nov 03  02:24  LAST QUARTER MOON 
    04  18:19  Regulus 3.2°N of Moon
    05  13     S Taurid Meteor Shower
    06  05:49  Jupiter 2.3°N of Moon
    06  23:56  Mars 1.8°N of Moon
    07  03:54  Venus 1.2°N of Moon
    07  05:53  Moon at Ascending Node 
    07  11:48  Moon at Apogee: 405724 km
    09  02:27  Spica 4.3°S of Moon
    11  07:47  NEW MOON 
    12  12     N Taurid Meteor Shower
    17  05     Mercury at Superior Conjunction 
    17  19     Leonid Meteor Shower
    18  20:27  FIRST QUARTER MOON 
    20  14     Mars at Aphelion 
    21  03:56  Moon at Descending Node 
    23  10:06  Moon at Perigee: 362818 km
    25  12:44  FULL MOON 
    25  23:33  Aldebaran 0.7°S of Moon
    28  20     Venus at Perihelion 
    29  09:20  Venus 3.9°N of Spica
    29  14     Saturn in Conjunction with Sun 

Dec 02  01:53  Regulus 3.0°N of Moon
    02  21:40  LAST QUARTER MOON 
    03  20:21  Jupiter 1.8°N of Moon
    04  08:33  Moon at Ascending Node 
    05  04:56  Moon at Apogee: 404800 km
    05  16:40  Mars 0.1°N of Moon: Occn.
    06  09:42  Spica 4.4°S of Moon
    07  06:55  Venus 0.7°S of Moon: Occn.
    11  00:29  NEW MOON 
    14  08     Geminid Meteor Shower
    17  20:01  Saturn 6.1°N of Antares
    18  05:13  Moon at Descending Node 
    18  05:14  FIRST QUARTER MOON 
    20  22:53  Moon at Perigee: 368418 km
    21  18:48  Winter Solstice 
    22  16     Ursid Meteor Shower
    23  04:18  Mars 3.3°N of Spica
    23  09:09  Aldebaran 0.7°S of Moon
    25  01:11  FULL MOON 
    28  17     Mercury at Greatest Elong: 19.7°E
    29  10:30  Regulus 2.7°N of Moon
    31  07:55  Jupiter 1.5°N of Moon
    31  10:19  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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