2021 Sky Event Almanac

Eastern Standard Time

The following table gives the date and time of the important astronomical events for the year. The times listed are for Eastern Standard Time (Coordinated Universal Time − 5 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.

2021 Sky Event Almanac
Eastern Standard Time
January - June July - December
Date     EST   Event
        (h:m)

Jan 02  09     Earth at Perihelion: 0.98325 AU
    02  16:58  Regulus 4.7°S of Moon
    03  10     Quadrantid Meteor Shower
    06  04:37  LAST QUARTER MOON 
    09  10:39  Moon at Perigee: 367390 km
    10  15:14  Moon at Descending Node 
    11  15:12  Venus 1.5°N of Moon
    13  00:00  NEW MOON 
    14  03:15  Mercury 2.3°N of Moon
    20  16:02  FIRST QUARTER MOON 
    21  08:11  Moon at Apogee: 404361 km
    23  21     Mercury at Greatest Elong: 18.6°E
    23  21     Saturn in Conjunction with Sun 
    24  16:47  Moon at Ascending Node 
    27  10:46  Pollux 3.8°N of Moon
    28  14:16  FULL MOON 
    28  20     Jupiter in Conjunction with Sun 
    28  21     Mercury at Perihelion 
    29  23:56  Regulus 4.6°S of Moon

Feb 03  14:33  Moon at Perigee: 370127 km
    04  12:37  LAST QUARTER MOON 
    06  19:29  Moon at Descending Node 
    08  09     Mercury at Inferior Conjunction 
    10  06:16  Saturn 3.4°N of Moon
    11  14:06  NEW MOON 
    18  05:22  Moon at Apogee: 404467 km
    18  17:47  Mars 3.7°N of Moon
    19  13:47  FIRST QUARTER MOON 
    20  00     Venus at Aphelion 
    20  20:44  Moon at Ascending Node 
    23  03     Mercury 4.0°N of Saturn
    23  20:10  Pollux 3.7°N of Moon
    26  09:04  Regulus 4.6°S of Moon
    27  03:17  FULL MOON 

Mar 02  00:19  Moon at Perigee: 365422 km
    03  18:36  Mars 2.6°S of Pleiades
    05  00     Mercury 0.3°N of Jupiter
    05  19:56  Moon at Descending Node 
    05  20:30  LAST QUARTER MOON 
    06  06     Mercury at Greatest Elong: 27.3°W
    09  18:02  Saturn 3.7°N of Moon
    10  10:35  Jupiter 4.0°N of Moon
    10  19     Neptune in Conjunction with Sun 
    10  20:02  Mercury 3.7°N of Moon
    13  05:21  NEW MOON 
    13  21     Mercury at Aphelion 
    18  00:04  Moon at Apogee: 405253 km
    19  12:48  Mars 1.9°N of Moon
    19  22:31  Moon at Ascending Node 
    20  04:37  Vernal Equinox 
    21  09:40  FIRST QUARTER MOON 
    23  05:26  Pollux 3.5°N of Moon
    25  19:17  Regulus 4.7°S of Moon
    26  01     Venus at Superior Conjunction 
    28  13:48  FULL MOON 
    30  01:12  Moon at Perigee: 360311 km

Apr 01  15:49  Antares 4.9°S of Moon
    01  21:41  Moon at Descending Node 
    04  05:02  LAST QUARTER MOON 
    06  03:34  Saturn 4.0°N of Moon
    07  02:15  Jupiter 4.4°N of Moon
    11  21:31  NEW MOON 
    14  12:47  Moon at Apogee: 406120 km
    16  00:53  Moon at Ascending Node 
    17  07:09  Mars 0.1°N of Moon: Occn.
    18  21     Mercury at Superior Conjunction 
    19  13:18  Pollux 3.2°N of Moon
    20  01:59  FIRST QUARTER MOON 
    22  07     Lyrid Meteor Shower
    26  20     Mercury at Perihelion 
    26  22:31  FULL MOON 
    27  10:24  Moon at Perigee: 357379 km
    29  01:07  Antares 4.8°S of Moon
    29  04:17  Moon at Descending Node 
    30  16     Uranus in Conjunction with Sun 

May 03  12:02  Saturn 4.2°N of Moon
    03  14:50  LAST QUARTER MOON 
    03  22:03  Mercury 2.1°S of Pleiades
    04  16:00  Jupiter 4.6°N of Moon
    04  20     Eta-Aquarid Meteor Shower
    11  14:00  NEW MOON 
    11  16:54  Moon at Apogee: 406512 km
    13  05:29  Moon at Ascending Node 
    13  12:59  Mercury 2.1°N of Moon
    15  23:47  Mars 1.5°S of Moon
    16  19:39  Pollux 3.1°N of Moon
    17  01     Mercury at Greatest Elong: 22.0°E
    19  14:13  FIRST QUARTER MOON 
    25  20:52  Moon at Perigee: 357310 km
    26  06:14  FULL MOON 
    26  06:19  Total Lunar Eclipse; mag=1.009
    26  11:55  Antares 4.8°S of Moon
    26  14:38  Moon at Descending Node 
    28  22     Mercury 0.4°S of Venus
    30  20:22  Saturn 4.2°N of Moon

Jun 01  03:57  Jupiter 4.6°N of Moon
    02  02:24  LAST QUARTER MOON 
    07  21:27  Moon at Apogee: 406230 km
    09  11:42  Moon at Ascending Node 
    10  05:42  Annular Solar Eclipse; mag=0.943
    10  05:53  NEW MOON 
    10  20     Mercury at Inferior Conjunction 
    12  01:44  Venus 1.5°S of Moon
    12  08     Venus at Perihelion 
    13  01:19  Pollux 3.1°N of Moon
    13  14:52  Mars 2.8°S of Moon
    17  22:54  FIRST QUARTER MOON 
    20  22:32  Summer Solstice 
    22  22:26  Antares 4.8°S of Moon
    23  01:07  Moon at Descending Node 
    23  04:58  Moon at Perigee: 359960 km
    24  13:40  FULL MOON 
    27  04:30  Saturn 4.0°N of Moon
    28  13:38  Jupiter 4.5°N of Moon

Date     EST   Event
        (h:m)

Jul 01  16:11  LAST QUARTER MOON 
    04  15     Mercury at Greatest Elong: 21.6°W
    05  09:48  Moon at Apogee: 405342 km
    05  18     Earth at Aphelion: 1.01673 AU
    06  17:41  Moon at Ascending Node 
    07  23:38  Mercury 3.7°S of Moon
    09  20:17  NEW MOON 
    12  04:10  Venus 3.3°S of Moon
    12  05:10  Mars 3.8°S of Moon
    12  19     Mars at Aphelion:  1.66596 AU
    13  08     Venus 0.5°N of Mars
    17  05:11  FIRST QUARTER MOON 
    20  07:06  Antares 4.7°S of Moon
    20  08:22  Moon at Descending Node 
    21  05:30  Moon at Perigee: 364520 km
    21  16:21  Venus 1.0°N of Regulus
    23  20     Mercury at Perihelion 
    23  21:37  FULL MOON 
    24  11:42  Saturn 3.8°N of Moon
    25  20:17  Jupiter 4.2°N of Moon
    27  22     Delta-Aquarid Meteor Shower
    29  09:09  Mars 0.6°N of Regulus
    31  08:16  LAST QUARTER MOON 

Aug 01  09     Mercury at Superior Conjunction 
    02  00     Saturn at Opposition 
    02  02:35  Moon at Apogee: 404412 km
    02  21:51  Moon at Ascending Node 
    06  14:42  Pollux 3.1°N of Moon
    08  08:50  NEW MOON 
    09  19:42  Mars 4.3°S of Moon
    11  02:00  Venus 4.3°S of Moon
    12  14     Perseid Meteor Shower
    15  10:20  FIRST QUARTER MOON 
    16  11:04  Moon at Descending Node 
    16  13:34  Antares 4.5°S of Moon
    17  04:23  Moon at Perigee: 369127 km
    18  22     Mercury 0.1°S of Mars
    19  18     Jupiter at Opposition 
    20  17:19  Saturn 3.7°N of Moon
    21  23:52  Jupiter 4.0°N of Moon
    22  07:02  FULL MOON 
    29  21:22  Moon at Apogee: 404100 km
    30  00:13  Moon at Ascending Node 
    30  02:13  LAST QUARTER MOON 

Sep 02  23:04  Pollux 3.0°N of Moon
    05  09:32  Venus 1.4°N of Spica
    05  19     Mercury at Aphelion 
    06  19:52  NEW MOON 
    09  21:09  Venus 4.1°S of Moon
    11  05:05  Moon at Perigee: 368464 km
    12  11:35  Moon at Descending Node 
    12  18:59  Antares 4.2°S of Moon
    13  15:39  FIRST QUARTER MOON 
    13  23     Mercury at Greatest Elong: 26.8°E
    14  03     Neptune at Opposition 
    16  21:37  Saturn 3.8°N of Moon
    18  01:50  Jupiter 4.0°N of Moon
    20  18:55  FULL MOON 
    20  21:00  Mercury 1.2°S of Spica
    22  14:21  Autumnal Equinox 
    26  02:33  Moon at Ascending Node 
    26  16:44  Moon at Apogee: 404641 km
    28  20:57  LAST QUARTER MOON 
    30  07:44  Pollux 2.8°N of Moon

Oct 02  17     Venus at Aphelion 
    06  06:05  NEW MOON 
    07  23     Mars in Conjunction with Sun 
    08  12:28  Moon at Perigee: 363388 km
    09  11     Mercury at Inferior Conjunction 
    09  13:36  Venus 2.9°S of Moon
    09  14:35  Moon at Descending Node 
    10  01:27  Antares 4.0°S of Moon
    12  22:25  FIRST QUARTER MOON 
    14  02:12  Saturn 3.9°N of Moon
    15  04:58  Jupiter 4.1°N of Moon
    16  08:24  Venus 1.4°N of Antares
    19  19     Mercury at Perihelion 
    20  09:57  FULL MOON 
    21  06     Orionid Meteor Shower
    23  00:45  Pleiades 4.5°N of Moon
    23  06:47  Moon at Ascending Node 
    24  10:30  Moon at Apogee: 405616 km
    25  00     Mercury at Greatest Elong: 18.4°W
    27  15:40  Pollux 2.6°N of Moon
    28  15:05  LAST QUARTER MOON 
    29  17     Venus at Greatest Elong: 47.0°E

Nov 01  20:18  Mercury 3.7°N of Spica
    03  13:40  Mercury 1.2°S of Moon: Occn.
    04  16:15  NEW MOON 
    04  19     Uranus at Opposition 
    05  07     S Taurid Meteor Shower
    05  17:23  Moon at Perigee: 358845 km
    05  22:38  Moon at Descending Node 
    06  10:29  Antares 3.9°S of Moon
    08  00:21  Venus 1.1°S of Moon: Occn.
    10  09:27  Saturn 4.1°N of Moon
    11  07:46  FIRST QUARTER MOON 
    11  12:13  Jupiter 4.4°N of Moon
    12  06     N Taurid Meteor Shower
    17  13     Leonid Meteor Shower
    19  03:58  FULL MOON 
    19  04:03  Partial Lunar Eclipse; mag=0.974
    19  07:21  Pleiades 4.5°N of Moon
    19  12:59  Moon at Ascending Node 
    20  21:14  Moon at Apogee: 406276 km
    23  22:22  Pollux 2.5°N of Moon
    27  07:28  LAST QUARTER MOON 
    29  00     Mercury at Superior Conjunction 

Dec 02  19:28  Mars 0.7°S of Moon: Occn.
    03  09:58  Moon at Descending Node 
    04  02:33  Total Solar Eclipse; mag=1.037
    04  02:43  NEW MOON 
    04  05:01  Moon at Perigee: 356794 km
    06  19:48  Venus 1.9°N of Moon
    07  20:52  Saturn 4.2°N of Moon
    09  01:07  Jupiter 4.5°N of Moon
    10  20:36  FIRST QUARTER MOON 
    14  02     Geminid Meteor Shower
    16  13:30  Pleiades 4.5°N of Moon
    16  19:12  Moon at Ascending Node 
    17  21:16  Moon at Apogee: 406322 km
    18  23:36  FULL MOON 
    21  04:20  Pollux 2.6°N of Moon
    21  10:59  Winter Solstice 
    22  10     Ursid Meteor Shower
    26  21:24  LAST QUARTER MOON 
    27  04:15  Mars 4.4°N of Antares
    29  00     Mercury 4.2°S of Venus
    30  20:07  Moon at Descending Node 
    31  08:54  Antares 3.9°S of Moon
    31  15:13  Mars 1.0°N of Moon: Occn.

    

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

2021 Phases of the Moon

Eastern Standard Time

The following table gives the date and time of the Moon's phases for the year. The times listed are for Eastern Standard Time (Coordinated Universal Time − 5 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.

2021 Phases of the Moon
Eastern Standard Time
New Moon First Quarter Full Moon Last Quarter
--- Jan 06 04:37
Jan 13 00:00 Jan 20 16:02 Jan 28 14:16 Feb 04 12:37
Feb 11 14:06 Feb 19 13:47 Feb 27 03:17 Mar 05 20:30
Mar 13 05:21 Mar 21 09:40 Mar 28 13:48 Apr 04 05:02
Apr 11 21:31 Apr 20 01:59 Apr 26 22:31 May 03 14:50
May 11 14:00 May 19 14:13 May 26 06:14 t Jun 02 02:24
Jun 10 05:53 A Jun 17 22:54 Jun 24 13:40 Jul 01 16:11
Jul 09 20:17 Jul 17 05:11 Jul 23 21:37 Jul 31 08:16
Aug 08 08:50 Aug 15 10:20 Aug 22 07:02 Aug 30 02:13
Sep 06 19:52 Sep 13 15:39 Sep 20 18:55 Sep 28 20:57
Oct 06 06:05 Oct 12 22:25 Oct 20 09:57 Oct 28 15:05
Nov 04 16:15 Nov 11 07:46 Nov 19 03:58 p Nov 27 07:28
Dec 04 02:43 T Dec 10 20:36 Dec 18 23:36 Dec 26 21:24

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: 2021 to 2030

The Americas

Below are links to sky event almanacs from 2021 to 2030 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 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030
AST 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030
EST 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030
CST 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030
MST 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030
PST 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030
AKST 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030
HST 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030

        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


Useful External Links

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