2017 Calendar of Astronomical Events




    


2017 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.

2017 Phases of the Moon
Hawaiian Standard Time
New Moon First Quarter Full Moon Last Quarter
- Jan 5 09:47 Jan 12 01:34 Jan 19 12:14
Jan 27 14:07 Feb 3 18:19 Feb 10 14:33 n Feb 18 09:33
Feb 26 04:58 A Mar 5 01:32 Mar 12 04:54 Mar 20 05:58
Mar 27 16:57 Apr 3 08:39 Apr 10 20:08 Apr 18 23:57
Apr 26 02:16 May 2 16:47 May 10 11:43 May 18 14:33
May 25 09:44 Jun 1 02:42 Jun 9 03:10 Jun 17 01:33
Jun 23 16:31 Jun 30 14:51 Jul 8 18:07 Jul 16 09:26
Jul 22 23:46 Jul 30 05:23 Aug 7 08:11 p Aug 14 15:15
Aug 21 08:30 T Aug 28 22:13 Sep 5 21:03 Sep 12 20:25
Sep 19 19:30 Sep 27 16:54 Oct 5 08:40 Oct 12 02:25
Oct 19 09:12 Oct 27 12:22 Nov 3 19:23 Nov 10 10:37
Nov 18 01:42 Nov 26 07:03 Dec 3 05:47 Dec 9 21:51
Dec 17 20:31 Dec 25 23:20 --

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

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.

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

Jan 01  23:20  Venus 1.9°S of Moon
    02  08:14  Moon at Descending Node 
    02  20:47  Mars 0.2°S of Moon: Occn.
    03  04     Quadrantid Meteor Shower
    04  05     Earth at Perihelion: 0.98331 AU
    05  09:47  FIRST QUARTER MOON 
    08  23     Mercury 6.7° of Saturn
    09  04:07  Aldebaran 0.4°S of Moon
    09  20:07  Moon at Perigee: 363242 km
    12  01:34  FULL MOON 
    12  03     Venus at Greatest Elong: 47.1°E
    13  03:59  Beehive 3.9°N of Moon
    14  18:07  Regulus 0.9°N of Moon
    15  00:44  Moon at Ascending Node 
    18  19:26  Jupiter 2.7°S of Moon
    19  00     Mercury at Greatest Elong: 24.1°W
    19  12:14  LAST QUARTER MOON 
    21  14:14  Moon at Apogee: 404913 km
    24  00:37  Saturn 3.6°S of Moon
    25  14:46  Mercury 3.7°S of Moon
    27  14:07  NEW MOON 
    29  12:21  Moon at Descending Node 
    31  03:11  Jupiter 3.5°N of Spica
    31  04:34  Venus 4.1°N of Moon
    31  15:09  Mars 2.3°N of Moon

Feb 03  18:19  FIRST QUARTER MOON 
    05  11:14  Aldebaran 0.2°S of Moon
    06  03:59  Moon at Perigee: 368817 km
    07  04     Mercury at Aphelion 
    09  13:46  Beehive 3.9°N of Moon
    10  14:33  FULL MOON 
    10  14:44  Pen. Lunar Eclipse; mag=0.988
    11  04:04  Regulus 0.8°N of Moon
    11  09:49  Moon at Ascending Node 
    15  04:55  Jupiter 2.7°S of Moon
    18  09:33  LAST QUARTER MOON 
    18  11     Jupiter at Aphelion 
    18  11:14  Moon at Apogee: 404376 km
    20  06     Venus at Perihelion 
    20  13:44  Saturn 3.6°S of Moon
    25  20:28  Moon at Descending Node 
    26  04:53  Annular Solar Eclipse; mag=0.992
    26  04:58  NEW MOON 

Mar 01  08:58  Mars 4.3°N of Moon
    01  16     Neptune in Conjunction with Sun 
    02  21:24  Moon at Perigee: 369065 km
    04  16:38  Aldebaran 0.2°S of Moon
    05  01:32  FIRST QUARTER MOON 
    06  14     Mercury at Superior Conjunction 
    08  21:12  Beehive 3.9°N of Moon
    10  12:20  Regulus 0.8°N of Moon
    10  18:17  Moon at Ascending Node 
    12  04:54  FULL MOON 
    14  10:04  Jupiter 2.5°S of Moon
    18  07:25  Moon at Apogee: 404651 km
    20  00:29  Vernal Equinox 
    20  00:49  Saturn 3.4°S of Moon
    20  05:58  LAST QUARTER MOON 
    23  04     Mercury at Perihelion 
    25  01     Venus at Inferior Conjunction 
    25  05:41  Moon at Descending Node 
    27  16:57  NEW MOON 
    30  02:39  Moon at Perigee: 363855 km
    30  03:03  Mars 5.5°N of Moon
    31  22:50  Aldebaran 0.3°S of Moon

Apr 01  00     Mercury at Greatest Elong: 19.0°E
    03  08:39  FIRST QUARTER MOON 
    05  02:45  Beehive 3.8°N of Moon
    06  18:30  Regulus 0.7°N of Moon
    06  23:14  Moon at Ascending Node 
    07  11     Jupiter at Opposition 
    10  11:20  Jupiter 2.2°S of Moon
    10  20:08  FULL MOON 
    13  20     Uranus in Conjunction with Sun 
    15  00:05  Moon at Apogee: 405478 km
    16  08:39  Saturn 3.2°S of Moon
    18  23:57  LAST QUARTER MOON 
    19  20     Mercury at Inferior Conjunction 
    20  22:16  Mars 3.4°S of Pleiades
    21  12:30  Moon at Descending Node 
    22  02     Lyrid Meteor Shower
    23  07:59  Venus 5.2°N of Moon
    26  02:16  NEW MOON 
    27  06:18  Moon at Perigee: 359325 km
    28  07:19  Aldebaran 0.5°S of Moon

May 02  08:23  Beehive 3.6°N of Moon
    02  16:47  FIRST QUARTER MOON 
    03  23:49  Regulus 0.5°N of Moon
    04  00:42  Moon at Ascending Node 
    04  15     Eta-Aquarid Meteor Shower
    05  03:51  Mars 6.1°N of Aldebaran
    07  11:24  Jupiter 2.1°S of Moon
    10  11:43  FULL MOON 
    12  09:51  Moon at Apogee: 406212 km
    13  13:07  Saturn 3.1°S of Moon
    17  13     Mercury at Greatest Elong: 25.8°W
    18  14:33  LAST QUARTER MOON 
    18  15:30  Moon at Descending Node 
    22  02:32  Venus 2.4°N of Moon
    23  15:20  Mercury 1.6°N of Moon
    25  09:44  NEW MOON 
    25  15:23  Moon at Perigee: 357210 km
    29  15:50  Beehive 3.4°N of Moon
    31  01:56  Moon at Ascending Node 
    31  06:08  Regulus 0.3°N of Moon

Jun 01  02:42  FIRST QUARTER MOON 
    03  01     Venus at Greatest Elong: 45.9°W
    03  13:57  Jupiter 2.3°S of Moon
    06  17:19  Mercury 5.3°S of Pleiades
    08  12:21  Moon at Apogee: 406402 km
    09  03:10  FULL MOON 
    09  15:25  Saturn 3.1°S of Moon
    12  14     Venus at Aphelion 
    14  16:40  Moon at Descending Node 
    14  23     Saturn at Opposition 
    17  01:33  LAST QUARTER MOON 
    19  03     Mercury at Perihelion 
    20  11:13  Venus 2.4°N of Moon
    20  18:25  Summer Solstice 
    21  04     Mercury at Superior Conjunction 
    22  04:23  Aldebaran 0.5°S of Moon
    23  00:49  Moon at Perigee: 357938 km
    23  16:31  NEW MOON 
    26  01:18  Beehive 3.2°N of Moon
    27  06:26  Moon at Ascending Node 
    27  14:26  Regulus 0.1°N of Moon
    30  14:51  FIRST QUARTER MOON 
    30  21:28  Jupiter 2.7°S of Moon

Date     HST   Event
        (h:m)

Jul 03  10     Earth at Aphelion: 1.01668 AU
    04  14:21  Venus 6.5°S of Pleiades
    05  18:27  Moon at Apogee: 405934 km
    06  17:34  Saturn 3.2°S of Moon
    08  18:07  FULL MOON 
    09  15:33  Mercury 0.1°N of Beehive
    11  19:17  Moon at Descending Node 
    13  08:03  Venus 3.1°N of Aldebaran
    16  09:26  LAST QUARTER MOON 
    19  13:37  Aldebaran 0.4°S of Moon
    20  01:13  Venus 2.7°N of Moon
    21  07:09  Moon at Perigee: 361238 km
    22  23:46  NEW MOON 
    24  14:46  Moon at Ascending Node 
    24  22:49  Mercury 0.9°S of Moon: Occn.
    25  00:14  Regulus 0.0°S of Moon
    25  07:03  Mercury 0.8°S of Regulus
    26  14     Mars in Conjunction with Sun 
    27  17     Delta-Aquarid Meteor Shower
    28  10:15  Jupiter 3.1°S of Moon
    29  18     Mercury at Greatest Elong: 27.2°E
    30  05:23  FIRST QUARTER MOON 

Aug 02  03     Mercury at Aphelion 
    02  07:55  Moon at Apogee: 405026 km
    02  21:31  Saturn 3.5°S of Moon
    07  08:11  FULL MOON 
    07  08:20  Partial Lunar Eclipse; mag=0.246
    08  00:56  Moon at Descending Node 
    12  09     Perseid Meteor Shower
    14  15:15  LAST QUARTER MOON 
    15  20:39  Aldebaran 0.4°S of Moon
    18  03:14  Moon at Perigee: 366129 km
    18  18:45  Venus 2.2°N of Moon
    19  21:15  Beehive 3.2°N of Moon
    20  08:08  Venus 7.2°S of Pollux
    21  00:34  Moon at Ascending Node 
    21  08:26  Total Solar Eclipse; mag=1.031
    21  08:30  NEW MOON 
    25  03:00  Jupiter 3.5°S of Moon
    26  11     Mercury at Inferior Conjunction 
    28  22:13  FIRST QUARTER MOON 
    30  01:25  Moon at Apogee: 404307 km
    30  04:23  Saturn 3.6°S of Moon
    31  20:08  Venus 1.4°S of Beehive

Sep 04  08:41  Moon at Descending Node 
    04  14     Mercury 3.2° of Mars
    04  18     Neptune at Opposition 
    05  21:03  FULL MOON 
    09  19:30  Mercury 0.7°S of Regulus
    10  11:44  Jupiter 2.9°N of Spica
    12  00     Mercury at Greatest Elong: 17.9°W
    12  02:09  Aldebaran 0.4°S of Moon
    12  20:25  LAST QUARTER MOON 
    13  06:04  Moon at Perigee: 369856 km
    15  02     Mercury at Perihelion 
    16  04:50  Beehive 3.1°N of Moon
    16  08     Mercury 0.1° of Mars
    17  08:28  Moon at Ascending Node 
    17  14:56  Venus 0.5°N of Moon: Occn.
    17  18:32  Regulus 0.1°S of Moon
    18  13:22  Mercury 0.0°N of Moon: Occn.
    19  11:30  Venus 0.4°N of Regulus
    19  19:30  NEW MOON 
    21  21:51  Jupiter 3.7°S of Moon
    22  10:02  Autumnal Equinox 
    26  14:09  Saturn 3.5°S of Moon
    26  20:49  Moon at Apogee: 404342 km
    27  16:54  FIRST QUARTER MOON 

Oct 01  16:05  Moon at Descending Node 
    02  23     Venus at Perihelion 
    05  08:40  FULL MOON 
    07  14     Mars at Aphelion 
    08  11     Mercury at Superior Conjunction 
    08  19:51  Moon at Perigee: 366858 km
    09  08:05  Aldebaran 0.6°S of Moon
    12  02:25  LAST QUARTER MOON 
    13  10:29  Beehive 3.0°N of Moon
    14  12:10  Moon at Ascending Node 
    15  00:54  Regulus 0.2°S of Moon
    17  00:04  Mars 1.8°S of Moon
    17  14:21  Venus 2.0°S of Moon
    19  07     Uranus at Opposition 
    19  09:12  NEW MOON 
    21  01     Orionid Meteor Shower
    24  01:54  Saturn 3.3°S of Moon
    24  16:25  Moon at Apogee: 405151 km
    26  08     Jupiter in Conjunction with Sun 
    27  12:22  FIRST QUARTER MOON 
    28  20:41  Moon at Descending Node 

Nov 02  03:58  Venus 3.3°N of Spica
    03  19:23  FULL MOON 
    05  01     S Taurid Meteor Shower
    05  14:09  Moon at Perigee: 361438 km
    05  16:19  Aldebaran 0.8°S of Moon
    09  15:58  Beehive 2.7°N of Moon
    10  10:37  LAST QUARTER MOON 
    10  12:40  Moon at Ascending Node 
    11  06:07  Regulus 0.4°S of Moon
    12  01     N Taurid Meteor Shower
    12  07:50  Mercury 2.2°N of Antares
    14  14:40  Mars 3.2°S of Moon
    17  07     Leonid Meteor Shower
    18  01:42  NEW MOON 
    20  14:34  Saturn 3.0°S of Moon
    21  08:52  Moon at Apogee: 406132 km
    23  14     Mercury at Greatest Elong: 22.0°E
    24  22:22  Moon at Descending Node 
    26  07:03  FIRST QUARTER MOON 
    29  04:30  Mars 2.9°N of Spica

Dec 03  03:00  Aldebaran 0.8°S of Moon
    03  05:47  FULL MOON 
    03  22:42  Moon at Perigee: 357496 km
    06  14     Mercury 1.3° of Saturn
    06  23:30  Beehive 2.5°N of Moon
    07  14:39  Moon at Ascending Node 
    08  12:25  Regulus 0.7°S of Moon
    09  21:51  LAST QUARTER MOON 
    12  02     Mercury at Perihelion 
    12  16     Mercury at Inferior Conjunction 
    13  06:27  Mars 4.2°S of Moon
    13  20     Geminid Meteor Shower
    14  04:26  Jupiter 4.2°S of Moon
    17  20:31  NEW MOON 
    18  15:27  Moon at Apogee: 406605 km
    21  06:29  Winter Solstice 
    21  10     Saturn in Conjunction with Sun 
    22  00:04  Moon at Descending Node 
    22  05     Ursid Meteor Shower
    25  23:20  FIRST QUARTER MOON 
    30  14:25  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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