2031 Sky Event Almanac

Mountain Standard Time

The following table gives the date and time of the important astronomical events for the year . The times listed are for Mountain Standard Time (Coordinated Universal Time − 7 hours) . This time zone may have different names in different countries. If Daylight Saving Time is in effect, add one hour to the times listed. A key to astronomical terms appears below the almanac.

2031 Sky Event Almanac
Mountain Standard Time
January - June July - December 
Date     MST   Event
        (h:m)

Jan 03  07:09  Mars 3.6°N of Spica
    03  21     Quadrantid Meteor Shower
    04  07:42  Pleiades 3.5°N of Moon
    04  13     Mercury at Greatest Elong: 22.9°W
    04  14     Earth at Perihelion: 0.98326 AU
    04  15:42  Saturn 2.4°S of Moon
    04  23:37  Moon at Descending Node 
    06  04:00  Moon at Apogee: 406169 km
    08  11:26  FULL MOON 
    16  02:36  Spica 1.5°N of Moon
    16  05:47  LAST QUARTER MOON 
    19  01:51  Moon at Ascending Node 
    19  06:49  Antares 4.9°S of Moon
    19  23:34  Jupiter 0.6°S of Moon: Occn.
    21  14:41  Moon at Perigee: 359637 km
    21  14:53  Mercury 3.7°S of Moon
    22  21:31  NEW MOON 
    27  13     Mercury at Aphelion 
    30  00:43  FIRST QUARTER MOON 
    31  14:26  Pleiades 3.7°N of Moon
    31  20:57  Saturn 2.2°S of Moon

Feb 01  02:25  Moon at Descending Node 
    02  16:45  Moon at Apogee: 405416 km
    07  05:46  FULL MOON 
    12  07:57  Spica 1.2°N of Moon
    13  18:19  Mars 3.7°N of Moon
    14  15:50  LAST QUARTER MOON 
    15  04:21  Moon at Ascending Node 
    16  15:35  Jupiter 1.3°S of Moon: Occn.
    18  17:35  Moon at Perigee: 364745 km
    20  06     Mercury at Superior Conjunction 
    21  08:49  NEW MOON 
    27  22:14  Pleiades 3.9°N of Moon
    28  04:02  Moon at Descending Node 
    28  05:56  Saturn 1.7°S of Moon
    28  21:02  FIRST QUARTER MOON 

Mar 02  11:57  Moon at Apogee: 404533 km
    08  21:30  FULL MOON 
    11  13:44  Spica 1.0°N of Moon
    12  12     Mercury at Perihelion 
    13  12:27  Mars 2.7°N of Moon
    14  04:38  Moon at Ascending Node 
    15  23:36  LAST QUARTER MOON 
    16  03:06  Jupiter 1.8°S of Moon
    17  11:58  Moon at Perigee: 369634 km
    18  05     Mercury at Greatest Elong: 18.5°E
    20  12:41  Vernal Equinox 
    22  20:49  NEW MOON 
    24  03:55  Mercury 0.1°S of Moon: Occn.
    25  21:40  Venus 0.9°S of Moon: Occn.
    27  06:44  Pleiades 4.2°N of Moon
    27  07:22  Moon at Descending Node 
    27  18:01  Saturn 1.2°S of Moon
    28  05:30  Aldebaran 4.5°S of Moon
    30  08:24  Moon at Apogee: 404227 km
    30  17:32  FIRST QUARTER MOON 

Apr 02  16     Neptune in Conjunction with Sun 
    04  13     Mercury at Inferior Conjunction 
    07  10:21  FULL MOON 
    07  21:35  Spica 0.9°N of Moon
    09  19:38  Mars 2.1°N of Moon
    10  07:56  Moon at Ascending Node 
    10  11:05  Venus 2.4°S of Pleiades
    11  12:13  Moon at Perigee: 367996 km
    12  10:56  Jupiter 2.1°S of Moon
    14  05:58  LAST QUARTER MOON 
    15  20     Venus 3.4°N of Saturn
    16  12     Venus at Perihelion 
    21  09:57  NEW MOON 
    22  19     Lyrid Meteor Shower
    23  13:22  Moon at Descending Node 
    23  14:56  Pleiades 4.3°N of Moon
    24  07:42  Saturn 0.7°S of Moon: Occn.
    24  13:36  Aldebaran 4.4°S of Moon
    25  01:28  Venus 3.9°N of Moon
    27  03:30  Moon at Apogee: 404758 km
    29  12:19  FIRST QUARTER MOON 

May 02  13     Mercury at Greatest Elong: 26.9°W
    04  04     Mars at Opposition 
    05  07:17  Spica 1.0°N of Moon
    05  08     Eta-Aquarid Meteor Shower
    06  15:45  Mars 1.9°N of Moon
    06  20:40  FULL MOON 
    06  20:51  Pen. Lunar Eclipse; mag=0.881
    07  15:55  Moon at Ascending Node 
    09  00:28  Moon at Perigee: 362851 km
    09  16:39  Jupiter 2.1°S of Moon
    13  12:07  LAST QUARTER MOON 
    13  23:50  Saturn 3.9°N of Aldebaran
    19  07:37  Mercury 4.4°S of Moon
    20  20:26  Moon at Descending Node 
    21  00:15  Annular Solar Eclipse; mag=0.959
    21  00:17  NEW MOON 
    24  19:08  Moon at Apogee: 405723 km
    29  02:28  Venus 3.9°S of Pollux
    29  04:20  FIRST QUARTER MOON 

Jun 01  17:22  Spica 1.0°N of Moon
    01  20     Venus at Greatest Elong: 45.4°E
    02  12:58  Mars 1.4°N of Moon
    02  20     Saturn in Conjunction with Sun 
    04  02:20  Moon at Ascending Node 
    05  04:44  Pen. Lunar Eclipse; mag=0.129
    05  04:58  FULL MOON 
    05  21:42  Jupiter 1.9°S of Moon
    06  05:11  Moon at Perigee: 358744 km
    08  12     Mercury at Superior Conjunction 
    08  12     Mercury at Perihelion 
    11  19:21  LAST QUARTER MOON 
    14  01     Uranus in Conjunction with Sun 
    15  00     Jupiter at Opposition 
    17  02:18  Moon at Descending Node 
    17  04:08  Pleiades 4.3°N of Moon
    18  03:02  Aldebaran 4.4°S of Moon
    19  15:25  NEW MOON 
    21  04:25  Moon at Apogee: 406452 km
    21  06:17  Summer Solstice 
    25  22:02  Mercury 4.7°S of Pollux
    27  17:19  FIRST QUARTER MOON 
    29  02:14  Spica 0.9°N of Moon
    29  23:41  Mars 0.4°N of Moon: Occn.


Date     MST   Event
        (h:m)

Jul 01  11:35  Moon at Ascending Node 
    03  03:02  Jupiter 1.7°S of Moon
    04  12:01  FULL MOON 
    04  14:14  Moon at Perigee: 357008 km
    05  23     Earth at Aphelion: 1.01669 AU
    11  04:50  LAST QUARTER MOON 
    14  05:38  Moon at Descending Node 
    14  09:49  Pleiades 4.4°N of Moon
    15  00     Mercury at Greatest Elong: 26.6°E
    15  08:49  Aldebaran 4.3°S of Moon
    15  23:23  Saturn 0.4°N of Moon: Occn.
    16  05:17  Venus 1.3°S of Regulus
    18  07:28  Moon at Apogee: 406535 km
    19  06:40  NEW MOON 
    21  16:10  Mercury 3.3°N of Moon
    21  19:15  Venus 1.6°N of Moon
    22  11     Mercury at Aphelion 
    25  11     Mercury 1.6°N of Venus
    26  09:05  Spica 0.6°N of Moon
    27  03:35  FIRST QUARTER MOON 
    27  23:06  Mars 1.1°S of Moon: Occn.
    28  10     Delta-Aquarid Meteor Shower
    28  16:54  Moon at Ascending Node 
    30  09:09  Jupiter 1.7°S of Moon

Aug 01  23:47  Moon at Perigee: 358060 km
    02  18:45  FULL MOON 
    06  20     Venus at Aphelion 
    09  17:24  LAST QUARTER MOON 
    10  07:10  Moon at Descending Node 
    10  20     Venus at Inferior Conjunction 
    11  15:01  Aldebaran 4.1°S of Moon
    11  21     Mercury at Inferior Conjunction 
    12  11:11  Saturn 0.7°N of Moon: Occn.
    13  02     Perseid Meteor Shower
    14  14:37  Moon at Apogee: 405946 km
    17  21:32  NEW MOON 
    22  14:30  Spica 0.4°N of Moon
    24  18:21  Moon at Ascending Node 
    25  06:38  Mars 2.8°S of Moon
    25  11:40  FIRST QUARTER MOON 
    26  16:28  Jupiter 2.0°S of Moon
    29  10     Mercury at Greatest Elong: 18.2°W
    30  05:53  Moon at Perigee: 361684 km

Sep 01  02:20  FULL MOON 
    04  11     Mercury at Perihelion 
    06  09:34  Moon at Descending Node 
    07  22:21  Aldebaran 3.8°S of Moon
    08  09:14  LAST QUARTER MOON 
    08  22:03  Saturn 1.1°N of Moon: Occn.
    10  04:09  Mars 2.5°N of Antares
    11  04:54  Moon at Apogee: 405006 km
    13  03:17  Venus 0.4°S of Moon: Occn.
    16  11:47  NEW MOON 
    18  20:05  Spica 0.2°N of Moon
    20  19:24  Moon at Ascending Node 
    22  19:35  Mars 4.4°S of Moon
    22  22:15  Autumnal Equinox 
    23  01:42  Jupiter 2.5°S of Moon
    23  18:20  FIRST QUARTER MOON 
    23  18     Mercury at Superior Conjunction 
    27  00:09  Moon at Perigee: 366841 km
    28  18     Mars 2.2°S of Jupiter
    30  11:58  FULL MOON 

Oct 03  15:03  Moon at Descending Node 
    05  06:48  Aldebaran 3.6°S of Moon
    06  07:25  Saturn 1.3°N of Moon
    07  08     Neptune at Opposition 
    08  03:50  LAST QUARTER MOON 
    08  23:23  Moon at Apogee: 404365 km
    09  03:13  Venus 2.1°S of Regulus
    12  06:45  Venus 4.0°N of Moon
    16  01:21  NEW MOON 
    17  07:11  Mercury 0.2°S of Moon: Occn.
    17  23:54  Moon at Ascending Node 
    20  13:53  Jupiter 3.0°S of Moon
    21  06     Venus at Greatest Elong: 46.4°W
    21  18     Orionid Meteor Shower
    22  13:06  Moon at Perigee: 370022 km
    23  00:36  FIRST QUARTER MOON 
    30  00:33  FULL MOON 
    30  00:45  Pen. Lunar Eclipse; mag=0.716
    30  23:09  Moon at Descending Node 

Nov 01  15:35  Aldebaran 3.6°S of Moon
    02  14:32  Saturn 1.3°N of Moon
    05  18     S Taurid Meteor Shower
    05  19:45  Moon at Apogee: 404522 km
    07  00:02  LAST QUARTER MOON 
    09  03:11  Mercury 1.8°N of Antares
    09  08     Mercury at Greatest Elong: 23.1°E
    12  12:40  Spica 0.2°N of Moon
    12  18     N Taurid Meteor Shower
    14  08:32  Moon at Ascending Node 
    14  14:06  Hybrid Solar Eclipse; mag=1.011
    14  14:10  NEW MOON 
    16  01     Mars at Perihelion:  1.38145 AU
    16  03:48  Mercury 4.7°S of Moon
    17  05:51  Jupiter 3.4°S of Moon
    17  15:07  Moon at Perigee: 365930 km
    18  00     Leonid Meteor Shower
    21  07:45  FIRST QUARTER MOON 
    27  04     Venus at Perihelion 
    27  07:01  Moon at Descending Node 
    28  16:18  FULL MOON 
    28  18:24  Venus 3.9°N of Spica
    28  23:36  Aldebaran 3.6°S of Moon
    29  19:00  Saturn 1.1°N of Moon: Occn.
    29  20     Mercury at Inferior Conjunction 

Dec 01  10     Mercury at Perihelion 
    03  15:35  Moon at Apogee: 405355 km
    06  20:20  LAST QUARTER MOON 
    09  22:42  Spica 0.2°N of Moon
    11  02:18  Venus 3.3°N of Moon
    11  12     Saturn at Opposition 
    11  18:37  Moon at Ascending Node 
    12  15:17  Mercury 1.6°N of Moon
    14  02:06  NEW MOON 
    14  13     Geminid Meteor Shower
    15  14:31  Moon at Perigee: 360489 km
    17  04     Uranus at Opposition 
    18  03     Mercury at Greatest Elong: 21.5°W
    20  17:00  FIRST QUARTER MOON 
    21  18:56  Winter Solstice 
    22  22     Ursid Meteor Shower
    24  11:44  Moon at Descending Node 
    26  06:13  Aldebaran 3.6°S of Moon
    26  21:28  Saturn 1.0°N of Moon: Occn.
    28  10:33  FULL MOON 
    31  06:16  Moon at Apogee: 406203 km

Terms Used in Sky Event Almanac

  • Perihelion - instant when a planet is closest to the Sun
  • Aphelion - instant when a planet is furthest from the Sun
  • Perigee - instant when the Moon is closest to Earth
  • Apogee - instant when the Moon is furthest from Earth
  • Inferior Conjunction - instant when a planet (Mercury or Venus) passes between Earth and the Sun
  • Superior Conjunction - instant when a planet (Mercury or Venus) passes on the opposite side of the Sun from Earth
  • Greatest Elongation - the maximum angular separation between the Sun and the planet (Mercury or Venus) 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 - instant when a planet appears opposite the Sun as seen from Earth
  • Conjunction - instant when a planet appears closest the Sun as seen from Earth
  • Occultation - the Moon occults or eclipses a star or planet
  • Ascending Node - point where the Moon crosses from the southern to northern portion of its orbit
  • Descending Node - point where the Moon crosses from the northern to the southern portion of its orbit

  • Aldebaran - bright star in the constellation Taurus
  • Pollux - bright star in the constellation Gemini
  • Regulus - bright star in the constellation Leo
  • Spica - bright star in the constellation Virgo
  • Antares - bright star in the constellation Scorpius
  • Pleiades - bright star cluster in the constellation Taurus

2031 Phases of the Moon

Mountain Standard Time

The following table gives the date and time of the Moon's phases for the year . The times listed are for Mountain Standard Time (Coordinated Universal Time − 7 hours) . This time zone may have different names in different countries. If Daylight Saving Time is in effect, add one hour to the times listed.

2031 Phases of the Moon
Mountain Standard Time
New Moon First Quarter Full Moon Last Quarter
-- Jan 08 11:26 Jan 16 05:47
Jan 22 21:31 Jan 30 00:43 Feb 07 05:46 Feb 14 15:50
Feb 21 08:49 Feb 28 21:02 Mar 08 21:30 Mar 15 23:36
Mar 22 20:49 Mar 30 17:32 Apr 07 10:21 Apr 14 05:58
Apr 21 09:57 Apr 29 12:19 May 06 20:40 n May 13 12:07
May 21 00:17 A May 29 04:20 Jun 05 04:58 n Jun 11 19:20
Jun 19 15:25 Jun 27 17:19 Jul 04 12:01 Jul 11 04:50
Jul 19 06:40 Jul 27 03:35 Aug 02 18:45 Aug 09 17:24
Aug 17 21:32 Aug 25 11:40 Sep 01 02:20 Sep 08 09:14
Sep 16 11:47 Sep 23 18:20 Sep 30 11:58 Oct 08 03:50
Oct 16 01:21 Oct 23 00:36 Oct 30 00:33 n Nov 07 00:02
Nov 14 14:10 H Nov 21 07:45 Nov 28 16:18 Dec 06 20:20
Dec 14 02:06 Dec 20 17:00 Dec 28 10:33 -

For a collection of images showing the Moon's phases see: Phases of the Moon Photo Gallery.

The Phases of the Moon table also shows when an eclipse takes place. 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 Phases of the Moon table. 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.

Solar Eclipses

The following table contains links to a series of web pages covering the 21st Century. Each one summarizes ten years of solar eclipses. Every eclipse has links to a global visibility map, an interactive Google map, tables, and additional information.

Decade Pages of Solar Eclipses
Decades
2001-2010 2011-2020 2021-2030 2031-2040 2041-2050
2051-2060 2061-2070 2071-2080 2081-2090 2091-2100

Lunar Eclipses

The following table contains links to a series of web pages covering the 21st Century. Each one summarizes ten years of lunar eclipses. Every eclipse has links to an eclipse diagram, a global visibility map, tables, and additional information.

Decade Pages of Lunar Eclipses
Decades
2001-2010 2011-2020 2021-2030 2031-2040 2041-2050
2051-2060 2061-2070 2071-2080 2081-2090 2091-2100

Sky Event Almanacs: 2031 to 2040

The Americas

Below are links to sky event almanacs from 2031 to 2040 for eight time zones in the Americas.
Choose a time zone and click on a year to get a sky event almanac for that year.

Sky Event Almanacs - The Americas
ART 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040
AST 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040
EST 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040
CST 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040
MST 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040
PST 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040
AKST 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040
HST 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040

        Time Zones Abbreviations
        • ART = Argentina Time (= UTC - 3 hours)
        • AST = Atlantic Standard Time (= UTC - 4 hours)
        • EST = Eastern Standard Time (= UTC - 5 hours)
        • CST = Central Standard Time (= UTC - 6 hours)
        • MST = Mountain Standard Time (= UTC - 7 hours)
        • PST = Pacific Standard Time (= UTC - 8 hours)
        • AKST = Alaskan Standard Time (= UTC - 9 hours)
        • HST = Hawaiian Standard Time (= UTC - 10 hours)
          (where UTC = Coordinated Universal Time)

A time zone may have a different name in different countries. Note the difference in hours between a given time zone and Coordinated Universal Time to help in identification.

For other years and other time zones, visit: Sky Event Almanacs.

Accuracy of the Sky Event Almanacs

The goal of the Sky Event Almanacs is to present a wide range of solar system phenomena with reasonable accuracy. In general, events listed to the nearest hour are accurate to ± 30 minutes. Events listed with a precision in hours and minutes (i.e., hh:mm) are typically accurate to ± 5 minutes or less.

The following table gives a more detailed breakdown of the accuracy of times for various astronomical events.

Accuracy of the Sky Event Almanacs
Solstice/Equinox (Earth) ± 0.5 minute
Aphelion/Perihelion (Earth) ± 30 minutes; ± 0.00001 AU
Solar and Lunar Eclipses ± 0.5 minute
Phases of the Moon ± 0.5 minute
Moon at Nodes ± 2 minutes
Apogee/Perigee of Moon ± 5 minutes; ± 5 kilometers
Conjunctions of Moon with Star or Planet ± 10 minutes
Conjunctions of Planet with Planet ± 3 hours
Inferior/Superior Conjunctions (Mercury & Venus) ± 30 minutes
Greatest Elongation (Mercury & Venus) ± 30 minutes
Opposition/Conjunction (Outer Planets) ± 3 hours
Aphelion/Perihelion of Planets ± 30 minutes

Fifty Year Almanac of Astronomical Events - 2021 to 2070

book


For more information and sample pages, see Fifty Year Almanac of Astronomical Events - 2021 To 2070.

Acknowledgements

All calculations are by Fred Espenak and he assumes full responsibility for their accuracy. Algorithms used in predicting many of the astronomical events 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:

    "Sky Event Almanacs Courtesy of Fred Espenak, www.AstroPixels.com".


Return to: Sky Event Almanacs

Return to: Planetary Ephemeris Data


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