2027Calendar of Astronomical Events

    

2027Phases of the Moon

Atlantic Standard Time

The following table gives the date and time of the Moon's phases for the year. The times listed are for Atlantic Standard Time(Greenwich Mean Time - 4 hours).If Daylight Saving Time is in effect, add one hour to the times listed.

2027 Phases of the Moon
Atlantic Standard Time
New Moon First Quarter Full Moon Last Quarter
Jan 7 16:24 Jan 15 16:34 Jan 22 08:17 Jan 29 06:55
Feb 6 11:56 A Feb 14 03:58 Feb 20 19:23 n Feb 28 01:16
Mar 8 05:29 Mar 15 12:25 Mar 22 06:44 Mar 29 20:54
Apr 6 19:51 Apr 13 18:57 Apr 20 18:27 Apr 28 16:18
May 6 06:58 May 13 00:44 May 20 06:59 May 28 09:58
Jun 4 15:40 Jun 11 06:56 Jun 18 20:44 Jun 27 00:54
Jul 3 23:02 Jul 10 14:39 Jul 18 11:45 Jul 26 12:55
Aug 2 06:05 T Aug 9 00:54 Aug 17 03:29 n Aug 24 22:27
Aug 31 13:41 Sep 7 14:31 Sep 15 19:04 Sep 23 06:20
Sep 29 22:36 Oct 7 07:47 Oct 15 09:47 Oct 22 13:29
Oct 29 09:36 Nov 6 04:00 Nov 13 23:26 Nov 20 20:48
Nov 27 23:24 Dec 6 01:22 Dec 13 12:09 Dec 20 05:11
Dec 27 16:12 ---

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.


2027Calendar of Astronomical Events

Atlantic Standard Time

The following table gives the date and time of the important astronomical events for the year. The times listed are for Atlantic Standard Time(Greenwich Mean Time - 4 hours).If Daylight Saving Time is in effect, add one hour to the times listed. A key to astronomical terms appears below the calendar.

2027Calendar of Astronomical Events
Atlantic Standard Time
January - June July - December
Date     AST   Event        (h:m)Jan 01  13     Mercury at Superior Conjunction     02  22     Earth at Perihelion: 0.98333 AU    03  15     Venus at Greatest Elong: 47.0°W    04  00     Quadrantid Meteor Shower    04  12:34  Antares 0.3°N of Moon    07  04:10  Moon at Apogee: 406610 km    07  16:24  NEW MOON     10  11:58  Moon at Ascending Node     15  16:34  FIRST QUARTER MOON     18  04:46  Pleiades 1.1°S of Moon    21  17:49  Moon at Perigee: 357285 km    21  19:18  Pollux 4.4°N of Moon    22  08:17  FULL MOON     22  16:17  Beehive 0.4°N of Moon    23  13:26  Moon at Descending Node     23  20:24  Jupiter 1.5°N of Moon    24  05:19  Regulus 1.5°N of Moon    24  23:39  Mars 6.5°N of Moon    28  03:55  Spica 2.9°N of Moon    29  06:55  LAST QUARTER MOON     31  18:48  Antares 0.4°N of MoonFeb 03  02     Mercury at Greatest Elong: 18.3°E    03  09:31  Moon at Apogee: 406189 km    06  04     Mercury at Perihelion     06  11:56  NEW MOON     06  12:00  Annular Solar Eclipse; mag=0.928    06  17:44  Moon at Ascending Node     07  23:36  Mercury 0.4°N of Moon: Occn.    10  20     Jupiter at Opposition     14  03:58  FIRST QUARTER MOON     14  12:13  Pleiades 1.2°S of Moon    18  05:50  Pollux 4.4°N of Moon    18  13     Mercury at Inferior Conjunction     19  03:16  Beehive 0.4°N of Moon    19  03:30  Moon at Perigee: 361015 km    19  11     Mars at Opposition     20  00:40  Moon at Descending Node     20  01:46  Jupiter 1.2°N of Moon: Occn.    20  16:33  Regulus 1.5°N of Moon    20  19:13  Pen. Lunar Eclipse; mag=0.927    20  19:23  FULL MOON     20  19:48  Mars 5.9°N of Moon    22  00:31  Mars 3.8°N of Regulus    24  13:14  Spica 2.9°N of Moon    28  01:16  LAST QUARTER MOON     28  02:09  Antares 0.4°N of MoonMar 03  01:41  Moon at Apogee: 405221 km    04  14:59  Venus 2.1°N of Moon    04  19     Mars at Aphelion:  1.66610 AU    06  00:41  Moon at Ascending Node     06  01:28  Mercury 1.2°N of Moon    08  05:29  NEW MOON     13  17:43  Pleiades 1.1°S of Moon    15  12:25  FIRST QUARTER MOON     17  03     Mercury at Greatest Elong: 27.6°W    17  13:40  Pollux 4.5°N of Moon    18  11:52  Beehive 0.4°N of Moon    19  00:31  Moon at Perigee: 366440 km    19  06:05  Jupiter 0.9°N of Moon: Occn.    19  09:05  Moon at Descending Node     19  14:33  Mars 4.3°N of Moon    20  02:13  Regulus 1.5°N of Moon    20  16:25  Vernal Equinox     22  03     Mercury at Aphelion     22  06:44  FULL MOON     23  23:12  Spica 2.8°N of Moon    24  18     Neptune in Conjunction with Sun     27  10:36  Antares 0.3°N of Moon    29  20:54  LAST QUARTER MOON     30  21:33  Moon at Apogee: 404331 km    31  02     Mars 4.3°N of JupiterApr 02  06:17  Moon at Ascending Node     04  02:49  Venus 3.3°S of Moon    06  19:51  NEW MOON     07  13     Saturn in Conjunction with Sun     09  23:30  Pleiades 0.9°S of Moon    13  18:57  FIRST QUARTER MOON     13  19:23  Pollux 4.7°N of Moon    13  20:41  Moon at Perigee: 370001 km    14  18:01  Beehive 0.6°N of Moon    15  11:01  Jupiter 1.0°N of Moon: Occn.    15  12:31  Moon at Descending Node     15  21:00  Mars 3.3°N of Moon    16  09:21  Regulus 1.6°N of Moon    17  01     Venus at Aphelion     19  07     Mercury 0.6°N of Saturn    20  08:09  Spica 2.8°N of Moon    20  18:27  FULL MOON     22  21     Lyrid Meteor Shower    23  19:16  Antares 0.1°N of Moon    27  17:21  Moon at Apogee: 404170 km    28  16:18  LAST QUARTER MOON     28  17     Mercury at Superior Conjunction     29  09:24  Moon at Ascending Node May 05  03     Mercury at Perihelion     05  10     Eta-Aquarid Meteor Shower    06  06:58  NEW MOON     07  12     Venus 0.6°N of Saturn    09  16:07  Moon at Perigee: 366635 km    11  01:06  Pollux 4.9°N of Moon    11  23:32  Beehive 0.9°N of Moon    12  13:03  Moon at Descending Node     12  18:49  Jupiter 1.3°N of Moon    13  00:44  FIRST QUARTER MOON     13  14:57  Regulus 1.9°N of Moon    13  15:34  Mars 3.3°N of Moon    13  19:11  Mercury 7.3°N of Aldebaran    14  06:58  Mars 1.1°N of Regulus    17  15:16  Spica 2.9°N of Moon    20  06:59  FULL MOON     21  03:08  Antares 0.0°S of Moon    25  11:13  Moon at Apogee: 404801 km    26  11:22  Moon at Ascending Node     27  04     Uranus in Conjunction with Sun     28  06     Mercury at Greatest Elong: 22.9°E    28  09:58  LAST QUARTER MOON Jun 04  15:40  NEW MOON     06  02:29  Mercury 2.7°S of Moon    06  10:54  Moon at Perigee: 361703 km    07  08:40  Pollux 5.1°N of Moon    08  06:29  Beehive 1.1°N of Moon    08  09:02  Venus 5.0°S of Pleiades    08  15:23  Moon at Descending Node     09  06:54  Jupiter 1.9°N of Moon    09  21:01  Regulus 2.2°N of Moon    10  18:45  Mars 3.9°N of Moon    11  06:56  FIRST QUARTER MOON     13  21:01  Spica 3.0°N of Moon    16  06:11  Venus 4.7°N of Aldebaran    17  09:46  Antares 0.0°S of Moon    18  20:44  FULL MOON     21  10:11  Summer Solstice     22  01:08  Moon at Apogee: 405698 km    22  14:25  Moon at Ascending Node     23  04     Mercury at Inferior Conjunction     27  00:54  LAST QUARTER MOON 
Date     AST   Event        (h:m)Jul 01  03:04  Pleiades 0.9°S of Moon    01  04     Mercury 4.6°S of Venus    03  23:02  NEW MOON     04  16:55  Moon at Perigee: 358284 km    05  02     Earth at Aphelion: 1.01673 AU    05  15:38  Beehive 1.2°N of Moon    05  22:14  Moon at Descending Node     06  23:14  Jupiter 2.5°N of Moon    07  05:01  Regulus 2.3°N of Moon    09  03:52  Mars 4.7°N of Moon    10  14:39  FIRST QUARTER MOON     11  02:50  Spica 3.2°N of Moon    14  15:34  Antares 0.1°N of Moon    15  15     Mercury at Greatest Elong: 20.7°W    18  11:45  FULL MOON     18  12:03  Pen. Lunar Eclipse; mag=0.002    19  07:52  Moon at Apogee: 406217 km    19  19:33  Moon at Ascending Node     25  02:23  Jupiter 0.4°N of Regulus    26  12:55  LAST QUARTER MOON     28  12     Delta-Aquarid Meteor Shower    28  12:20  Pleiades 1.0°S of MoonAug 01  02     Mercury at Perihelion     02  02:28  Moon at Perigee: 357362 km    02  06:05  NEW MOON     02  06:07  Total Solar Eclipse; mag=1.079    02  08:33  Moon at Descending Node     03  18:38  Jupiter 3.0°N of Moon    06  17:13  Mars 5.2°N of Moon    07  10     Venus at Perihelion     07  10:03  Spica 3.3°N of Moon    09  00:54  FIRST QUARTER MOON     10  21:31  Antares 0.1°N of Moon    11  07     Mercury at Superior Conjunction     11  20     Venus at Superior Conjunction     13  04     Perseid Meteor Shower    15  10:23  Moon at Apogee: 406086 km    16  01:51  Moon at Ascending Node     17  03:14  Pen. Lunar Eclipse; mag=0.546    17  03:29  FULL MOON     23  10:36  Mars 1.7°N of Spica    24  19:36  Pleiades 0.9°S of Moon    24  22:27  LAST QUARTER MOON     28  15:14  Pollux 5.2°N of Moon    29  12:49  Beehive 1.3°N of Moon    29  19:01  Moon at Descending Node     30  11:36  Moon at Perigee: 359208 km    31  04     Jupiter in Conjunction with Sun     31  13:41  NEW MOON Sep 02  00:46  Mercury 4.5°N of Moon    03  19:07  Spica 3.2°N of Moon    04  09:45  Mars 5.2°N of Moon    07  04:34  Antares 0.0°N of Moon    07  14:31  FIRST QUARTER MOON     11  19:39  Moon at Apogee: 405384 km    12  07:26  Moon at Ascending Node     14  02     Mercury at Aphelion     15  19:04  FULL MOON     20  23:21  Mercury 0.2°S of Spica    21  01:12  Pleiades 0.8°S of Moon    23  02:02  Autumnal Equinox     23  06:20  LAST QUARTER MOON     24  18     Mercury at Greatest Elong: 26.3°E    24  23:15  Pollux 5.3°N of Moon    25  21:34  Beehive 1.4°N of Moon    26  02:04  Moon at Descending Node     27  11:35  Regulus 2.4°N of Moon    27  16:12  Moon at Perigee: 363455 km    28  09     Neptune at Opposition     28  11:39  Jupiter 4.2°N of Moon    29  22:36  NEW MOON Oct 01  20:27  Mercury 1.8°N of Moon    03  04:58  Mars 4.5°N of Moon    04  13:01  Antares 0.2°S of Moon    07  07:47  FIRST QUARTER MOON     09  10:57  Moon at Ascending Node     09  11:47  Moon at Apogee: 404531 km    11  10     Mercury 3.8°S of Venus    15  09:47  FULL MOON     17  20     Saturn at Opposition     18  06:48  Pleiades 0.6°S of Moon    19  11     Mercury at Inferior Conjunction     21  20     Orionid Meteor Shower    22  05:10  Pollux 5.6°N of Moon    22  13:29  LAST QUARTER MOON     23  04:01  Beehive 1.6°N of Moon    23  04:15  Moon at Descending Node     24  19:09  Regulus 2.6°N of Moon    25  01:36  Moon at Perigee: 368651 km    26  05:33  Jupiter 4.9°N of Moon    28  02     Mercury at Perihelion     29  09:36  NEW MOON     29  09:47  Mars 3.7°N of Antares    31  03:57  Venus 4.4°N of Moon    31  22:13  Antares 0.4°S of MoonNov 01  02:53  Mars 3.3°N of Moon    04  05     Mercury at Greatest Elong: 18.8°W    04  20:48  Mercury 4.0°N of Spica    05  12:54  Moon at Ascending Node     05  21     S Taurid Meteor Shower    06  04:00  FIRST QUARTER MOON     06  07:37  Moon at Apogee: 404183 km    09  02:44  Venus 3.8°N of Antares    12  20     N Taurid Meteor Shower    13  23:26  FULL MOON     14  14:14  Pleiades 0.5°S of Moon    18  02     Leonid Meteor Shower    18  10:45  Pollux 5.9°N of Moon    18  20:10  Moon at Perigee: 369356 km    19  04:34  Moon at Descending Node     19  09:29  Beehive 1.9°N of Moon    20  20:48  LAST QUARTER MOON     21  00:52  Regulus 2.9°N of Moon    22  19:55  Jupiter 5.5°N of Moon    24  21     Venus 0.3°S of Mars    24  22:24  Spica 3.2°N of Moon    27  18     Venus at Aphelion     27  23:24  NEW MOON     30  03:53  Mars 1.6°N of Moon    30  06     Uranus at Opposition     30  09:20  Venus 0.9°N of Moon: Occn.Dec 02  15:38  Moon at Ascending Node     04  04:42  Moon at Apogee: 404663 km    06  01:22  FIRST QUARTER MOON     11  18     Mercury at Superior Conjunction     11  23:55  Pleiades 0.5°S of Moon    13  12:09  FULL MOON     14  16     Geminid Meteor Shower    15  18:19  Pollux 6.0°N of Moon    15  22:21  Moon at Perigee: 364026 km    16  08:21  Moon at Descending Node     16  16:23  Beehive 2.1°N of Moon    18  06:50  Regulus 3.1°N of Moon    20  05:11  LAST QUARTER MOON     20  06:40  Jupiter 6.0°N of Moon    21  22:43  Winter Solstice     22  04:13  Spica 3.3°N of Moon    23  00     Ursid Meteor Shower    25  14:01  Antares 0.4°S of Moon    27  16:12  NEW MOON     29  20:51  Moon at Ascending Node     30  21:54  Venus 3.1°S of Moon    

Terms Used in Astronomical Events Calendar

  • 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
  • Beehive - bright star cluster in the constellation Cancer

Calendars of Astronomical Events: 2021 to 2030

The Americas

Below are links to calendars of astronomical events from 2021 to 2030 for seven time zones in the Americas.
Choose a time zone and click on a year to get a calendar of astronomical events for that year.

Calendars of Astronomical Events - The Americas
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
        • AST = Atlantic Standard Time (= GMT - 4 hours)
        • EST = Eastern Standard Time (= GMT - 5 hours)
        • CST = Central Standard Time (= GMT - 6 hours)
        • MST = Mountain Standard Time (= GMT - 7 hours)
        • PST = Pacific Standard Time (= GMT - 8 hours)
        • AKST = Alaskan Standard Time (= GMT - 9 hours)
        • HST = Hawaiian Standard Time (= GMT - 10 hours)
          (where GMT = Greenwich Mean Time)

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

For other years and other time zones, visit: Calendars of Astronomical Events.

Accuracy of the Astronomical Events Calendars

The goal of the Astronomical Events Calendars 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 Astronomical Events Calendars
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

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:


Return to: Calendars of Astronomical Events

Return to: Planetary Ephemeris Data