2017 Calendar of Astronomical Events



2017 Phases of the Moon

Central 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.

2017 Phases of the Moon
Central Standard Time
New Moon First Quarter Full Moon Last Quarter
- Jan 5 13:47 Jan 12 05:34 Jan 19 16:14
Jan 27 18:07 Feb 3 22:19 Feb 10 18:33 n Feb 18 13:33
Feb 26 08:58 A Mar 5 05:32 Mar 12 08:54 Mar 20 09:58
Mar 27 20:57 Apr 3 12:39 Apr 11 00:08 Apr 19 03:57
Apr 26 06:16 May 2 20:47 May 10 15:43 May 18 18:33
May 25 13:44 Jun 1 06:42 Jun 9 07:10 Jun 17 05:33
Jun 23 20:31 Jun 30 18:51 Jul 8 22:07 Jul 16 13:26
Jul 23 03:46 Jul 30 09:23 Aug 7 12:11 p Aug 14 19:15
Aug 21 12:30 T Aug 29 02:13 Sep 6 01:03 Sep 13 00:25
Sep 19 23:30 Sep 27 20:54 Oct 5 12:40 Oct 12 06:25
Oct 19 13:12 Oct 27 16:22 Nov 3 23:23 Nov 10 14:37
Nov 18 05:42 Nov 26 11:03 Dec 3 09:47 Dec 10 01:51
Dec 18 00:31 Dec 26 03:20 --

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.



2017 Calendar of Astronomical Events

Central 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.

2017 Calendar of Astronomical Events
January - June July - December
Date     CST   Event
        (h:m)

Jan 02  03:20  Venus 1.9°S of Moon
    02  12:14  Moon at Descending Node 
    03  00:47  Mars 0.2°S of Moon: Occn.
    03  08     Quadrantid Meteor Shower
    04  09     Earth at Perihelion: 0.98331 AU
    05  13:47  FIRST QUARTER MOON 
    09  03     Mercury 6.7° of Saturn
    09  08:07  Aldebaran 0.4°S of Moon
    10  00:07  Moon at Perigee: 363242 km
    12  05:34  FULL MOON 
    12  07     Venus at Greatest Elong: 47.1°E
    13  07:59  Beehive 3.9°N of Moon
    14  22:07  Regulus 0.9°N of Moon
    15  04:44  Moon at Ascending Node 
    18  23:26  Jupiter 2.7°S of Moon
    19  04     Mercury at Greatest Elong: 24.1°W
    19  16:14  LAST QUARTER MOON 
    21  18:14  Moon at Apogee: 404913 km
    24  04:37  Saturn 3.6°S of Moon
    25  18:46  Mercury 3.7°S of Moon
    27  18:07  NEW MOON 
    29  16:21  Moon at Descending Node 
    31  07:11  Jupiter 3.5°N of Spica
    31  08:34  Venus 4.1°N of Moon
    31  19:09  Mars 2.3°N of Moon

Feb 03  22:19  FIRST QUARTER MOON 
    05  15:14  Aldebaran 0.2°S of Moon
    06  07:59  Moon at Perigee: 368817 km
    07  08     Mercury at Aphelion 
    09  17:46  Beehive 3.9°N of Moon
    10  18:33  FULL MOON 
    10  18:44  Pen. Lunar Eclipse; mag=0.988
    11  08:04  Regulus 0.8°N of Moon
    11  13:49  Moon at Ascending Node 
    15  08:55  Jupiter 2.7°S of Moon
    18  13:33  LAST QUARTER MOON 
    18  15     Jupiter at Aphelion 
    18  15:14  Moon at Apogee: 404376 km
    20  10     Venus at Perihelion 
    20  17:44  Saturn 3.6°S of Moon
    26  00:28  Moon at Descending Node 
    26  08:53  Annular Solar Eclipse; mag=0.992
    26  08:58  NEW MOON 

Mar 01  12:58  Mars 4.3°N of Moon
    01  20     Neptune in Conjunction with Sun 
    03  01:24  Moon at Perigee: 369065 km
    04  20:38  Aldebaran 0.2°S of Moon
    05  05:32  FIRST QUARTER MOON 
    06  18     Mercury at Superior Conjunction 
    09  01:12  Beehive 3.9°N of Moon
    10  16:20  Regulus 0.8°N of Moon
    10  22:17  Moon at Ascending Node 
    12  08:54  FULL MOON 
    14  14:04  Jupiter 2.5°S of Moon
    18  11:25  Moon at Apogee: 404651 km
    20  04:29  Vernal Equinox 
    20  04:49  Saturn 3.4°S of Moon
    20  09:58  LAST QUARTER MOON 
    23  08     Mercury at Perihelion 
    25  05     Venus at Inferior Conjunction 
    25  09:41  Moon at Descending Node 
    27  20:57  NEW MOON 
    30  06:39  Moon at Perigee: 363855 km
    30  07:03  Mars 5.5°N of Moon

Apr 01  02:50  Aldebaran 0.3°S of Moon
    01  04     Mercury at Greatest Elong: 19.0°E
    03  12:39  FIRST QUARTER MOON 
    05  06:45  Beehive 3.8°N of Moon
    06  22:30  Regulus 0.7°N of Moon
    07  03:14  Moon at Ascending Node 
    07  15     Jupiter at Opposition 
    10  15:20  Jupiter 2.2°S of Moon
    11  00:08  FULL MOON 
    14  00     Uranus in Conjunction with Sun 
    15  04:05  Moon at Apogee: 405478 km
    16  12:39  Saturn 3.2°S of Moon
    19  03:57  LAST QUARTER MOON 
    20  00     Mercury at Inferior Conjunction 
    21  02:16  Mars 3.4°S of Pleiades
    21  16:30  Moon at Descending Node 
    22  06     Lyrid Meteor Shower
    23  11:59  Venus 5.2°N of Moon
    26  06:16  NEW MOON 
    27  10:18  Moon at Perigee: 359325 km
    28  11:19  Aldebaran 0.5°S of Moon

May 02  12:23  Beehive 3.6°N of Moon
    02  20:47  FIRST QUARTER MOON 
    04  03:49  Regulus 0.5°N of Moon
    04  04:42  Moon at Ascending Node 
    04  19     Eta-Aquarid Meteor Shower
    05  07:51  Mars 6.1°N of Aldebaran
    07  15:24  Jupiter 2.1°S of Moon
    10  15:43  FULL MOON 
    12  13:51  Moon at Apogee: 406212 km
    13  17:07  Saturn 3.1°S of Moon
    17  17     Mercury at Greatest Elong: 25.8°W
    18  18:33  LAST QUARTER MOON 
    18  19:30  Moon at Descending Node 
    22  06:32  Venus 2.4°N of Moon
    23  19:20  Mercury 1.6°N of Moon
    25  13:44  NEW MOON 
    25  19:23  Moon at Perigee: 357210 km
    29  19:50  Beehive 3.4°N of Moon
    31  05:56  Moon at Ascending Node 
    31  10:08  Regulus 0.3°N of Moon

Jun 01  06:42  FIRST QUARTER MOON 
    03  05     Venus at Greatest Elong: 45.9°W
    03  17:57  Jupiter 2.3°S of Moon
    06  21:19  Mercury 5.3°S of Pleiades
    08  16:21  Moon at Apogee: 406402 km
    09  07:10  FULL MOON 
    09  19:25  Saturn 3.1°S of Moon
    12  18     Venus at Aphelion 
    14  20:40  Moon at Descending Node 
    15  03     Saturn at Opposition 
    17  05:33  LAST QUARTER MOON 
    19  07     Mercury at Perihelion 
    20  15:13  Venus 2.4°N of Moon
    20  22:25  Summer Solstice 
    21  08     Mercury at Superior Conjunction 
    22  08:23  Aldebaran 0.5°S of Moon
    23  04:49  Moon at Perigee: 357938 km
    23  20:31  NEW MOON 
    26  05:18  Beehive 3.2°N of Moon
    27  10:26  Moon at Ascending Node 
    27  18:26  Regulus 0.1°N of Moon
    30  18:51  FIRST QUARTER MOON 

Date     CST   Event
        (h:m)

Jul 01  01:28  Jupiter 2.7°S of Moon
    03  14     Earth at Aphelion: 1.01668 AU
    04  18:21  Venus 6.5°S of Pleiades
    05  22:27  Moon at Apogee: 405934 km
    06  21:34  Saturn 3.2°S of Moon
    08  22:07  FULL MOON 
    09  19:33  Mercury 0.1°N of Beehive
    11  23:17  Moon at Descending Node 
    13  12:03  Venus 3.1°N of Aldebaran
    16  13:26  LAST QUARTER MOON 
    19  17:37  Aldebaran 0.4°S of Moon
    20  05:13  Venus 2.7°N of Moon
    21  11:09  Moon at Perigee: 361238 km
    23  03:46  NEW MOON 
    24  18:46  Moon at Ascending Node 
    25  02:49  Mercury 0.9°S of Moon: Occn.
    25  04:14  Regulus 0.0°S of Moon
    25  11:03  Mercury 0.8°S of Regulus
    26  18     Mars in Conjunction with Sun 
    27  21     Delta-Aquarid Meteor Shower
    28  14:15  Jupiter 3.1°S of Moon
    29  22     Mercury at Greatest Elong: 27.2°E
    30  09:23  FIRST QUARTER MOON 

Aug 02  07     Mercury at Aphelion 
    02  11:55  Moon at Apogee: 405026 km
    03  01:31  Saturn 3.5°S of Moon
    07  12:11  FULL MOON 
    07  12:20  Partial Lunar Eclipse; mag=0.246
    08  04:56  Moon at Descending Node 
    12  13     Perseid Meteor Shower
    14  19:15  LAST QUARTER MOON 
    16  00:39  Aldebaran 0.4°S of Moon
    18  07:14  Moon at Perigee: 366129 km
    18  22:45  Venus 2.2°N of Moon
    20  01:15  Beehive 3.2°N of Moon
    20  12:08  Venus 7.2°S of Pollux
    21  04:34  Moon at Ascending Node 
    21  12:26  Total Solar Eclipse; mag=1.031
    21  12:30  NEW MOON 
    25  07:00  Jupiter 3.5°S of Moon
    26  15     Mercury at Inferior Conjunction 
    29  02:13  FIRST QUARTER MOON 
    30  05:25  Moon at Apogee: 404307 km
    30  08:23  Saturn 3.6°S of Moon

Sep 01  00:08  Venus 1.4°S of Beehive
    04  12:41  Moon at Descending Node 
    04  18     Mercury 3.2° of Mars
    04  22     Neptune at Opposition 
    06  01:03  FULL MOON 
    09  23:30  Mercury 0.7°S of Regulus
    10  15:44  Jupiter 2.9°N of Spica
    12  04     Mercury at Greatest Elong: 17.9°W
    12  06:09  Aldebaran 0.4°S of Moon
    13  00:25  LAST QUARTER MOON 
    13  10:04  Moon at Perigee: 369856 km
    15  06     Mercury at Perihelion 
    16  08:50  Beehive 3.1°N of Moon
    16  12     Mercury 0.1° of Mars
    17  12:28  Moon at Ascending Node 
    17  18:56  Venus 0.5°N of Moon: Occn.
    17  22:32  Regulus 0.1°S of Moon
    18  17:22  Mercury 0.0°N of Moon: Occn.
    19  15:30  Venus 0.4°N of Regulus
    19  23:30  NEW MOON 
    22  01:51  Jupiter 3.7°S of Moon
    22  14:02  Autumnal Equinox 
    26  18:09  Saturn 3.5°S of Moon
    27  00:49  Moon at Apogee: 404342 km
    27  20:54  FIRST QUARTER MOON 

Oct 01  20:05  Moon at Descending Node 
    03  03     Venus at Perihelion 
    05  12:40  FULL MOON 
    07  18     Mars at Aphelion 
    08  15     Mercury at Superior Conjunction 
    08  23:51  Moon at Perigee: 366858 km
    09  12:05  Aldebaran 0.6°S of Moon
    12  06:25  LAST QUARTER MOON 
    13  14:29  Beehive 3.0°N of Moon
    14  16:10  Moon at Ascending Node 
    15  04:54  Regulus 0.2°S of Moon
    17  04:04  Mars 1.8°S of Moon
    17  18:21  Venus 2.0°S of Moon
    19  11     Uranus at Opposition 
    19  13:12  NEW MOON 
    21  05     Orionid Meteor Shower
    24  05:54  Saturn 3.3°S of Moon
    24  20:25  Moon at Apogee: 405151 km
    26  12     Jupiter in Conjunction with Sun 
    27  16:22  FIRST QUARTER MOON 
    29  00:41  Moon at Descending Node 

Nov 02  07:58  Venus 3.3°N of Spica
    03  23:23  FULL MOON 
    05  05     S Taurid Meteor Shower
    05  18:09  Moon at Perigee: 361438 km
    05  20:19  Aldebaran 0.8°S of Moon
    09  19:58  Beehive 2.7°N of Moon
    10  14:37  LAST QUARTER MOON 
    10  16:40  Moon at Ascending Node 
    11  10:07  Regulus 0.4°S of Moon
    12  05     N Taurid Meteor Shower
    12  11:50  Mercury 2.2°N of Antares
    14  18:40  Mars 3.2°S of Moon
    17  11     Leonid Meteor Shower
    18  05:42  NEW MOON 
    20  18:34  Saturn 3.0°S of Moon
    21  12:52  Moon at Apogee: 406132 km
    23  18     Mercury at Greatest Elong: 22.0°E
    25  02:22  Moon at Descending Node 
    26  11:03  FIRST QUARTER MOON 
    29  08:30  Mars 2.9°N of Spica

Dec 03  07:00  Aldebaran 0.8°S of Moon
    03  09:47  FULL MOON 
    04  02:42  Moon at Perigee: 357496 km
    06  18     Mercury 1.3° of Saturn
    07  03:30  Beehive 2.5°N of Moon
    07  18:39  Moon at Ascending Node 
    08  16:25  Regulus 0.7°S of Moon
    10  01:51  LAST QUARTER MOON 
    12  06     Mercury at Perihelion 
    12  20     Mercury at Inferior Conjunction 
    13  10:27  Mars 4.2°S of Moon
    14  00     Geminid Meteor Shower
    14  08:26  Jupiter 4.2°S of Moon
    18  00:31  NEW MOON 
    18  19:27  Moon at Apogee: 406605 km
    21  10:29  Winter Solstice 
    21  14     Saturn in Conjunction with Sun 
    22  04:04  Moon at Descending Node 
    22  09     Ursid Meteor Shower
    26  03:20  FIRST QUARTER MOON 
    30  18:25  Aldebaran 0.7°S of Moon

    

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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