2099 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.

2099 Sky Event Almanac
Mountain Standard Time
January - June July - December
Date     MST   Event
        (h:m)

Jan 03  11:16  Pleiades 0.3°N of Moon
    04  08     Quadrantid Meteor Shower
    04  23     Earth at Perihelion: 0.98331 AU
    06  18:50  FULL MOON 
    07  05:21  Pollux 1.9°N of Moon
    08  11:21  Moon at Perigee: 361107 km
    08  13     Mercury at Superior Conjunction 
    09  13:58  Regulus 3.0°S of Moon
    11  06:18  Jupiter 0.1°S of Moon: Occn.
    11  19     Venus 2.5°N of Mars
    12  08:34  Moon at Descending Node 
    12  19:20  Saturn 3.2°N of Moon
    13  09:55  Spica 0.8°S of Moon
    13  10:26  LAST QUARTER MOON 
    15  05:26  Mars 4.7°N of Antares
    16  21:55  Antares 0.2°S of Moon
    21  02:07  NEW MOON 
    24  05:47  Moon at Apogee: 406101 km
    26  14:57  Moon at Ascending Node 
    29  07:38  FIRST QUARTER MOON 
    30  20:56  Pleiades 0.0°N of Moon

Feb 03  16:31  Pollux 1.8°N of Moon
    05  05:48  FULL MOON 
    05  21:14  Moon at Perigee: 357384 km
    06  00:24  Regulus 2.9°S of Moon
    07  13:03  Jupiter 0.1°N of Moon: Occn.
    08  12:37  Moon at Descending Node 
    08  21     Mercury at Greatest Elong: 18.2°E
    09  02:54  Saturn 3.6°N of Moon
    09  17:16  Spica 0.6°S of Moon
    10  21     Mercury at Perihelion 
    11  22:08  LAST QUARTER MOON 
    13  03:33  Antares 0.0°N of Moon
    19  21:05  NEW MOON 
    20  10:45  Moon at Apogee: 406556 km
    22  18:03  Moon at Ascending Node 
    24  08     Mercury at Inferior Conjunction 
    27  04:34  Pleiades 0.2°S of Moon
    27  23:13  FIRST QUARTER MOON 

Mar 03  03:05  Pollux 1.7°N of Moon
    03  18     Neptune at Opposition 
    05  11:53  Regulus 2.9°S of Moon
    06  09:59  Moon at Perigee: 356797 km
    06  15:59  FULL MOON 
    06  19:06  Jupiter 0.1°S of Moon: Occn.
    07  21:55  Moon at Descending Node 
    08  06     Jupiter at Opposition 
    08  10:58  Saturn 3.7°N of Moon
    09  03:07  Spica 0.4°S of Moon
    12  10:38  Antares 0.2°N of Moon
    13  12:00  LAST QUARTER MOON 
    15  15:11  Mars 4.5°N of Moon
    18  13:48  Venus 2.9°N of Moon
    19  01:03  Mercury 2.7°N of Moon
    19  12:55  Moon at Apogee: 406404 km
    20  00:17  Vernal Equinox 
    21  15:46  NEW MOON 
    21  15:51  Annular Solar Eclipse; mag=0.932
    21  23:42  Moon at Ascending Node 
    23  06     Mercury at Greatest Elong: 27.8°W
    26  10:27  Pleiades 0.2°S of Moon
    26  20     Mercury at Aphelion 
    28  10     Mercury 3.1°N of Venus
    29  10:38  FIRST QUARTER MOON 
    30  11:17  Pollux 1.7°N of Moon
    31  00     Saturn at Opposition 

Apr 01  22:06  Regulus 2.9°S of Moon
    03  00:32  Jupiter 0.4°S of Moon: Occn.
    03  20:23  Moon at Perigee: 359339 km
    04  09:07  Moon at Descending Node 
    04  18:45  Saturn 3.5°N of Moon
    05  01:28  Partial Lunar Eclipse; mag=0.168
    05  01:37  FULL MOON 
    05  14:10  Spica 0.4°S of Moon
    06  20     Uranus in Conjunction with Sun 
    08  19:43  Antares 0.2°N of Moon
    08  22     Venus at Aphelion 
    12  03:47  LAST QUARTER MOON 
    13  13:49  Mars 3.2°N of Moon
    16  01:34  Moon at Apogee: 405586 km
    18  03:21  Venus 1.5°S of Moon
    18  06:18  Moon at Ascending Node 
    19  01:46  Mercury 3.3°S of Moon
    20  08:30  NEW MOON 
    22  16:07  Pleiades 0.2°S of Moon
    23  05     Lyrid Meteor Shower
    26  17:18  Pollux 1.8°N of Moon
    27  18:36  FIRST QUARTER MOON 
    29  05:48  Regulus 2.8°S of Moon
    30  05:57  Jupiter 0.6°S of Moon: Occn.

May 01  17:58  Moon at Descending Node 
    01  22:55  Moon at Perigee: 364037 km
    02  01:19  Saturn 3.3°N of Moon
    03  00:20  Spica 0.4°S of Moon
    04  06     Mercury at Superior Conjunction 
    04  10:58  FULL MOON 
    05  18     Eta-Aquarid Meteor Shower
    06  05:45  Antares 0.1°N of Moon
    09  20     Mercury at Perihelion 
    11  21:00  LAST QUARTER MOON 
    12  15:07  Mars 1.1°N of Moon: Occn.
    13  19:22  Moon at Apogee: 404556 km
    15  11:38  Moon at Ascending Node 
    19  22:16  NEW MOON 
    21  10:36  Mercury 2.7°S of Moon
    23  22:48  Pollux 1.9°N of Moon
    26  11:35  Regulus 2.6°S of Moon
    27  00:16  FIRST QUARTER MOON 
    27  12:45  Jupiter 0.5°S of Moon: Occn.
    28  22:09  Moon at Descending Node 
    29  00:58  Moon at Perigee: 368838 km
    29  06:47  Saturn 3.3°N of Moon
    30  08:20  Spica 0.3°S of Moon

Jun 02  15:03  Antares 0.0°N of Moon
    02  20:37  FULL MOON 
    03  15     Mercury at Greatest Elong: 23.4°E
    10  14:17  Moon at Apogee: 404057 km
    10  14:49  LAST QUARTER MOON 
    10  17:09  Mars 1.8°S of Moon
    11  14:47  Moon at Ascending Node 
    16  07:12  Pleiades 0.2°S of Moon
    18  09:10  NEW MOON 
    20  05:35  Pollux 2.1°N of Moon
    20  16:41  Summer Solstice 
    22  17:19  Regulus 2.3°S of Moon
    23  02:41  Moon at Perigee: 368734 km
    23  22:31  Jupiter 0.1°S of Moon: Occn.
    24  22:59  Moon at Descending Node 
    25  05:00  FIRST QUARTER MOON 
    25  12:40  Saturn 3.5°N of Moon
    26  14:22  Spica 0.1°S of Moon
    29  22:37  Antares 0.1°N of Moon
    30  01     Mercury at Inferior Conjunction 

Date     MST   Event
        (h:m)

Jul 02  07:21  FULL MOON 
    07  01     Earth at Aphelion: 1.01666 AU
    08  08:42  Moon at Apogee: 404420 km
    08  16:53  Moon at Ascending Node 
    10  08:13  LAST QUARTER MOON 
    13  16:19  Pleiades 0.3°S of Moon
    17  18:01  NEW MOON 
    20  00:44  Regulus 2.2°S of Moon
    20  05:45  Moon at Perigee: 364045 km
    21  12:06  Jupiter 0.5°N of Moon: Occn.
    21  19     Mercury at Greatest Elong: 20.3°W
    22  00:43  Moon at Descending Node 
    22  14     Venus at Superior Conjunction 
    22  20:50  Saturn 3.7°N of Moon
    23  19:58  Spica 0.2°N of Moon
    24  10:09  FIRST QUARTER MOON 
    27  04:33  Antares 0.3°N of Moon
    28  20     Delta-Aquarid Meteor Shower
    30  07     Venus at Perihelion 
    31  19:59  FULL MOON 

Aug 03  03     Mars at Perihelion:  1.38105 AU
    04  19:59  Moon at Ascending Node 
    05  01:15  Moon at Apogee: 405336 km
    05  19     Mercury at Perihelion 
    09  00:14  LAST QUARTER MOON 
    10  01:07  Pleiades 0.5°S of Moon
    13  12     Perseid Meteor Shower
    14  00:27  Pollux 2.1°N of Moon
    16  01:54  NEW MOON 
    16  23     Mercury at Superior Conjunction 
    17  07:24  Moon at Perigee: 359644 km
    18  05:24  Jupiter 1.1°N of Moon: Occn.
    18  06:41  Moon at Descending Node 
    19  08:25  Saturn 4.0°N of Moon
    20  02:59  Spica 0.4°N of Moon
    22  17:01  FIRST QUARTER MOON 
    23  10:06  Antares 0.4°N of Moon
    30  10:56  FULL MOON 

Sep 01  01:07  Moon at Ascending Node 
    01  12:45  Moon at Apogee: 406116 km
    04  20     Mercury 0.7°S of Jupiter
    06  08:36  Pleiades 0.7°S of Moon
    06  20     Neptune in Conjunction with Sun 
    07  14:18  LAST QUARTER MOON 
    10  10:24  Pollux 2.0°N of Moon
    12  21:05  Regulus 2.1°S of Moon
    14  07     Mercury 3.0°S of Saturn
    14  09:50  NEW MOON 
    14  09:55  Total Solar Eclipse; mag=1.068
    14  16:26  Moon at Perigee: 357286 km
    14  16:43  Moon at Descending Node 
    15  12:50  Venus 2.5°N of Moon
    15  23:12  Saturn 4.3°N of Moon
    16  00:07  Mercury 0.9°N of Moon: Occn.
    16  12:17  Spica 0.4°N of Moon
    18  19     Mercury at Aphelion 
    19  16:54  Antares 0.5°N of Moon
    20  16     Venus 1.3°S of Saturn
    21  02:48  FIRST QUARTER MOON 
    21  20:06  Mercury 0.2°N of Spica
    22  09:10  Autumnal Equinox 
    26  02     Jupiter in Conjunction with Sun 
    28  03:18  Venus 2.6°N of Spica
    28  07:27  Moon at Ascending Node 
    28  15:34  Moon at Apogee: 406272 km
    29  03:33  Pen. Lunar Eclipse; mag=1.034
    29  03:45  FULL MOON 
    30  20     Mercury at Greatest Elong: 25.9°E

Oct 03  14:42  Pleiades 0.6°S of Moon
    07  02:21  LAST QUARTER MOON 
    07  18:42  Pollux 2.0°N of Moon
    09  23     Saturn in Conjunction with Sun 
    10  07:19  Regulus 2.1°S of Moon
    12  03:41  Moon at Descending Node 
    12  05     Mercury 3.6°S of Venus
    12  09     Uranus at Opposition 
    13  03:26  Moon at Perigee: 357782 km
    13  18:32  NEW MOON 
    15  02:33  Mercury 0.5°N of Moon: Occn.
    15  11:24  Venus 4.2°N of Moon
    17  01:52  Antares 0.4°N of Moon
    18  01     Mars at Opposition 
    20  16:27  FIRST QUARTER MOON 
    22  04     Orionid Meteor Shower
    25  03     Mercury at Inferior Conjunction 
    25  13:00  Moon at Ascending Node 
    25  20:06  Moon at Apogee: 405825 km
    28  21:20  FULL MOON 
    30  20:23  Pleiades 0.6°S of Moon

Nov 01  19     Mercury at Perihelion 
    04  00:57  Pollux 2.2°N of Moon
    04  07:59  Venus 3.6°N of Antares
    05  12:42  LAST QUARTER MOON 
    06  05     S Taurid Meteor Shower
    06  15:26  Regulus 1.9°S of Moon
    08  11:30  Moon at Descending Node 
    09  18:17  Jupiter 3.0°N of Moon
    10  00     Mercury at Greatest Elong: 19.0°W
    10  07:45  Saturn 5.0°N of Moon
    10  09:55  Spica 0.4°N of Moon
    10  12:35  Moon at Perigee: 361208 km
    12  04:29  NEW MOON 
    13  04     N Taurid Meteor Shower
    13  12:23  Antares 0.3°N of Moon
    14  09:49  Venus 3.8°N of Moon
    18  10     Leonid Meteor Shower
    19  10:17  FIRST QUARTER MOON 
    19  15     Venus at Aphelion 
    21  16:17  Moon at Ascending Node 
    22  10:25  Moon at Apogee: 404988 km
    23  21:20  Mars 2.7°S of Moon
    27  03:02  Pleiades 0.5°S of Moon
    27  14:22  FULL MOON 

Dec 01  06:26  Pollux 2.4°N of Moon
    03  21:24  Regulus 1.7°S of Moon
    04  21:45  LAST QUARTER MOON 
    05  14:02  Moon at Descending Node 
    07  10:55  Jupiter 3.7°N of Moon
    07  18:33  Spica 0.6°N of Moon
    08  08:15  Saturn 4.2°N of Spica
    08  10:50  Moon at Perigee: 366610 km
    11  16:09  NEW MOON 
    14  12:02  Venus 2.1°N of Moon
    15  00     Geminid Meteor Shower
    18  18:01  Moon at Ascending Node 
    18  23     Mercury at Superior Conjunction 
    19  07:22  FIRST QUARTER MOON 
    20  06:16  Moon at Apogee: 404339 km
    21  07:04  Winter Solstice 
    21  17:26  Mars 2.3°S of Moon
    23  08     Ursid Meteor Shower
    24  11:13  Pleiades 0.6°S of Moon
    27  05:58  FULL MOON 
    28  13:16  Pollux 2.5°N of Moon
    31  03:07  Regulus 1.4°S of Moon

    

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

2099 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.

2099 Phases of the Moon
Mountain Standard Time
New Moon First Quarter Full Moon Last Quarter
-- Jan 06 18:50 Jan 13 10:26
Jan 21 02:07 Jan 29 07:38 Feb 05 05:48 Feb 11 22:08
Feb 19 21:05 Feb 27 23:13 Mar 06 15:59 Mar 13 12:00
Mar 21 15:46 A Mar 29 10:38 Apr 05 01:37 p Apr 12 03:47
Apr 20 08:30 Apr 27 18:36 May 04 10:58 May 11 21:00
May 19 22:16 May 27 00:16 Jun 02 20:37 Jun 10 14:49
Jun 18 09:10 Jun 25 05:00 Jul 02 07:21 Jul 10 08:13
Jul 17 18:01 Jul 24 10:09 Jul 31 19:59 Aug 09 00:14
Aug 16 01:54 Aug 22 17:01 Aug 30 10:56 Sep 07 14:18
Sep 14 09:50 T Sep 21 02:48 Sep 29 03:45 n Oct 07 02:21
Oct 13 18:32 Oct 20 16:27 Oct 28 21:20 Nov 05 12:42
Nov 12 04:29 Nov 19 10:17 Nov 27 14:22 Dec 04 21:46
Dec 11 16:09 Dec 19 07:22 Dec 27 05:58 -

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: 2091 to 2100

The Americas

Below are links to sky event almanacs from 2091 to 2100 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 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100
AST 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100
EST 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100
CST 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100
MST 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100
PST 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100
AKST 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100
HST 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100

        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

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


Useful External Links

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