2011Calendar of Astronomical Events
2011Phases of the Moon
Alaska Standard Time
The following table gives the date and time of the Moon's phases for the year. The times listed are for Alaska Standard Time(Greenwich Mean Time - 9 hours).If Daylight Saving Time is in effect, add one hour to the times listed.
| 2011 Phases of the Moon | |||
| Alaska Standard Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| Jan 4 00:03 P | Jan 12 02:31 | Jan 19 12:21 | Jan 26 03:57 |
| Feb 2 17:31 | Feb 10 22:18 | Feb 17 23:36 | Feb 24 14:26 |
| Mar 4 11:46 | Mar 12 14:45 | Mar 19 09:10 | Mar 26 03:07 |
| Apr 3 05:32 | Apr 11 03:05 | Apr 17 17:44 | Apr 24 17:47 |
| May 2 21:51 | May 10 11:33 | May 17 02:09 | May 24 09:52 |
| Jun 1 12:03 P | Jun 8 17:11 | Jun 15 11:13 t | Jun 23 02:48 |
| Jun 30 23:54 P | Jul 7 21:29 | Jul 14 21:40 | Jul 22 20:02 |
| Jul 30 09:40 | Aug 6 02:08 | Aug 13 09:58 | Aug 21 12:55 |
| Aug 28 18:04 | Sep 4 08:39 | Sep 12 00:27 | Sep 20 04:39 |
| Sep 27 02:09 | Oct 3 18:15 | Oct 11 17:06 | Oct 19 18:30 |
| Oct 26 10:56 | Nov 2 07:38 | Nov 10 11:16 | Nov 18 06:09 |
| Nov 24 21:10 P | Dec 2 00:52 | Dec 10 05:36 t | Dec 17 15:48 |
| Dec 24 09:06 | - | - | - |
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.
2011Calendar of Astronomical Events
Alaska Standard Time
The following table gives the date and time of the important astronomical events for the year. The times listed are for Alaska Standard Time(Greenwich Mean Time - 9 hours).If Daylight Saving Time is in effect, add one hour to the times listed. A key to astronomical terms appears below the calendar.
| 2011Calendar of Astronomical Events | ||||||||
| Alaska Standard Time | ||||||||
| January - June | July - December | |||||||
Date AKST Even (h:m)Jan 01 09:07 Antares 2.5°S of Moon 02 05:32 Mercury 3.8°N of Moon 03 03:48 Moon at Ascending Node 03 10 Earth at Perihelion: 0.98334 AU 03 16 Quadrantid Meteor Shower 03 23:51 Partial Solar Eclipse; mag=0.858 04 00:03 NEW MOON 08 06 Venus at Greatest Elong: 47.0°W 09 05 Mercury at Greatest Elong: 23.3°W 09 20:38 Moon at Apogee: 404976 km 12 02:31 FIRST QUARTER MOON 15 03:39 Pleiades 1.3°N of Moon 17 15:06 Moon at Descending Node 19 12:21 FULL MOON 21 15:10 Moon at Perigee: 362793 km 21 16:55 Regulus 5.3°N of Moon 25 08:38 Spica 3.0°N of Moon 26 03:57 LAST QUARTER MOON 28 14:53 Antares 2.6°S of Moon 29 18:36 Venus 3.5°N of Moon 30 09:29 Moon at Ascending Node 31 00 Mercury at Aphelion Feb 01 09:14 Mercury 3.6°S of Moon 02 17:31 NEW MOON 04 08 Mars in Conjunction with Sun 06 14:13 Moon at Apogee: 405924 km 10 22:18 FIRST QUARTER MOON 11 12:32 Pleiades 1.4°N of Moon 13 23:14 Moon at Descending Node 17 00 Neptune in Conjunction with Sun 17 23:36 FULL MOON 18 03:18 Regulus 5.2°N of Moon 18 22:27 Moon at Perigee: 358247 km 21 16:02 Spica 2.8°N of Moon 24 14:26 LAST QUARTER MOON 24 20:26 Antares 2.8°S of Moon 24 23 Mercury at Superior Conjunction 26 11:19 Moon at Ascending Node 28 18:40 Venus 1.6°S of MoonMar 04 11:46 NEW MOON 05 22:50 Moon at Apogee: 406584 km 09 05 Mars at Perihelion: 1.38138 AU 10 19:35 Pleiades 1.7°N of Moon 12 14:45 FIRST QUARTER MOON 13 02:55 Moon at Descending Node 15 11 Mercury 2.0°N of Jupiter 15 23 Mercury at Perihelion 17 08 Jupiter at Perihelion: 4.94839 AU 17 14:35 Regulus 5.3°N of Moon 19 09:10 FULL MOON 19 10:09 Moon at Perigee: 356578 km 20 14:21 Vernal Equinox 21 02:00 Spica 2.6°N of Moon 21 03 Uranus in Conjunction with Sun 22 16 Mercury at Greatest Elong: 18.6°E 24 03:48 Antares 3.0°S of Moon 25 12:09 Moon at Ascending Node 26 03:07 LAST QUARTER MOON Apr 02 00:00 Moon at Apogee: 406656 km 03 05:32 NEW MOON 03 14 Saturn at Opposition 06 06 Jupiter in Conjunction with Sun 07 01:19 Pleiades 1.9°N of Moon 09 03:48 Moon at Descending Node 09 10 Mercury at Inferior Conjunction 11 03:05 FIRST QUARTER MOON 14 00:34 Regulus 5.5°N of Moon 16 20:59 Moon at Perigee: 358088 km 17 13:04 Spica 2.5°N of Moon 17 17:44 FULL MOON 18 15 Venus at Aphelion 19 09 Mercury 0.6°N of Mars 20 13:21 Antares 3.2°S of Moon 21 16:05 Moon at Ascending Node 22 14 Lyrid Meteor Shower 24 17:47 LAST QUARTER MOON 29 09:02 Moon at Apogee: 406043 km 30 19 Mars 0.4°N of JupiterMay 02 21:51 NEW MOON 05 03 Eta-Aquarid Meteor Shower 06 05:54 Moon at Descending Node 07 10 Mercury at Greatest Elong: 26.6°W 07 20 Mercury 1.4°S of Venus 10 11:33 FIRST QUARTER MOON 11 06 Venus 0.6°S of Jupiter 11 08:05 Regulus 5.7°N of Moon 11 11 Mercury 2.1°S of Jupiter 14 23:08 Spica 2.6°N of Moon 15 02:18 Moon at Perigee: 362133 km 17 02:09 FULL MOON 17 22 Mercury 1.4°S of Venus 17 23:46 Antares 3.3°S of Moon 19 00:03 Moon at Ascending Node 20 23 Mercury 2.1°S of Mars 23 00 Venus 1.0°S of Mars 24 09:52 LAST QUARTER MOON 27 00:58 Moon at Apogee: 405006 km 29 05:31 Jupiter 5.7°S of Moon 30 11:04 Mars 3.8°S of Moon 30 19:00 Venus 4.4°S of MoonJun 01 12:03 NEW MOON 01 12:16 Partial Solar Eclipse; mag=0.601 02 11:21 Moon at Descending Node 07 13:45 Regulus 5.7°N of Moon 08 17:11 FIRST QUARTER MOON 09 05:50 Venus 5.0°S of Pleiades 11 06:57 Spica 2.6°N of Moon 11 16:42 Moon at Perigee: 367188 km 11 23 Mercury at Perihelion 12 14 Mercury at Superior Conjunction 14 09:17 Antares 3.3°S of Moon 15 09:35 Moon at Ascending Node 15 11:13 Total Lunar Eclipse; mag=1.700 15 11:13 FULL MOON 17 03:15 Venus 4.6°N of Aldebaran 20 16:24 Mars 4.2°S of Pleiades 21 08:16 Summer Solstice 23 02:48 LAST QUARTER MOON 23 19:13 Moon at Apogee: 404275 km 25 23:45 Jupiter 5.4°S of Moon 27 21:52 Pleiades 2.0°N of Moon 27 22:40 Mercury 4.7°S of Pollux 28 09:59 Mars 1.7°S of Moon 29 19:14 Moon at Descending Node 30 23:38 Partial Solar Eclipse; mag=0.097 30 23:54 NEW MOON | Date AKST Even (h:m)Jul 02 17:11 Mercury 5.1°N of Moon 04 06 Earth at Aphelion: 1.01674 AU 04 10:18 Mars 5.4°N of Aldebaran 04 19:23 Regulus 5.7°N of Moon 06 08:36 Mercury 0.2°S of Beehive 07 05:04 Moon at Perigee: 369566 km 07 21:29 FIRST QUARTER MOON 08 12:44 Spica 2.6°N of Moon 11 16:48 Antares 3.3°S of Moon 12 17:27 Moon at Ascending Node 14 21:40 FULL MOON 19 20 Mercury at Greatest Elong: 26.8°E 21 13:46 Moon at Apogee: 404358 km 22 20:02 LAST QUARTER MOON 23 15:34 Jupiter 5.1°S of Moon 25 06:28 Pleiades 2.1°N of Moon 25 22 Mercury at Aphelion 26 03:51 Mercury 2.1°S of Regulus 27 03:03 Moon at Descending Node 27 07:52 Mars 0.5°N of Moon: Occn. 28 05 Delta-Aquarid Meteor Shower 30 09:40 NEW MOON Aug 01 02:20 Mercury 1.5°N of Moon 01 02:41 Regulus 5.6°N of Moon 02 11:59 Moon at Perigee: 365756 km 04 18:08 Spica 2.4°N of Moon 06 02:08 FIRST QUARTER MOON 07 22:32 Antares 3.5°S of Moon 08 21:35 Moon at Ascending Node 08 23 Venus at Perihelion 12 21 Perseid Meteor Shower 13 09:58 FULL MOON 16 03 Venus at Superior Conjunction 16 16 Mercury at Inferior Conjunction 18 07:23 Moon at Apogee: 405161 km 20 03:13 Jupiter 4.8°S of Moon 21 12:55 LAST QUARTER MOON 21 14:40 Pleiades 2.3°N of Moon 22 13 Neptune at Opposition 23 08:23 Moon at Descending Node 25 04:36 Mars 2.7°N of Moon 27 16:07 Mercury 2.6°N of Moon 28 18:04 NEW MOON 30 08:35 Moon at Perigee: 360858 kmSep 01 01:06 Spica 2.2°N of Moon 02 21 Mercury at Greatest Elong: 18.1°W 04 04:00 Antares 3.7°S of Moon 04 08:39 FIRST QUARTER MOON 04 22:36 Moon at Ascending Node 07 22 Mercury at Perihelion 07 23:45 Mars 5.8°S of Pollux 08 17:18 Mercury 0.6°N of Regulus 12 00:27 FULL MOON 14 21:23 Moon at Apogee: 406068 km 16 09:20 Jupiter 4.7°S of Moon 17 21:46 Pleiades 2.5°N of Moon 19 10:38 Moon at Descending Node 20 04:39 LAST QUARTER MOON 22 23:23 Mars 4.8°N of Moon 23 00:05 Autumnal Equinox 24 22:49 Regulus 5.7°N of Moon 25 15 Uranus at Opposition 27 02:09 NEW MOON 27 16:01 Moon at Perigee: 357556 km 28 11 Mercury at Superior Conjunction 29 18 Venus 1.3°S of Saturn 30 15:53 Mars 0.4°S of BeehiveOct 01 11:04 Antares 3.9°S of Moon 02 00:09 Moon at Ascending Node 03 18:15 FIRST QUARTER MOON 11 17:06 FULL MOON 12 02:43 Moon at Apogee: 406435 km 13 10:28 Jupiter 4.8°S of Moon 13 12 Saturn in Conjunction with Sun 15 03:49 Pleiades 2.7°N of Moon 16 12:01 Moon at Descending Node 19 18:30 LAST QUARTER MOON 21 13 Orionid Meteor Shower 22 08:52 Regulus 5.8°N of Moon 26 03:26 Moon at Perigee: 357051 km 26 10:56 NEW MOON 27 17:14 Mercury 0.2°N of Moon: Occn. 27 20:11 Venus 1.8°N of Moon 28 16 Jupiter at Opposition 28 20:37 Antares 4.1°S of Moon 29 05:59 Moon at Ascending Node Nov 01 11 Mercury 2.0°S of Venus 02 07:38 FIRST QUARTER MOON 05 13 S Taurid Meteor Shower 08 04:20 Moon at Apogee: 406177 km 09 09:40 Jupiter 5.0°S of Moon 09 22:51 Venus 3.8°N of Antares 09 23:27 Mercury 1.9°N of Antares 10 09:21 Mars 1.3°N of Regulus 10 11:16 FULL MOON 11 02:32 Saturn 4.0°N of Spica 11 09:43 Pleiades 2.8°N of Moon 12 08:18 Aldebaran 5.9°S of Moon 12 13 N Taurid Meteor Shower 12 15:35 Moon at Descending Node 12 23 Mercury 2.0°S of Venus 14 00 Mercury at Greatest Elong: 22.7°E 17 19 Leonid Meteor Shower 18 06:09 LAST QUARTER MOON 18 16:42 Regulus 6.0°N of Moon 22 08:21 Spica 2.1°N of Moon 23 14:24 Moon at Perigee: 359692 km 24 21:10 NEW MOON 24 21:20 Partial Solar Eclipse; mag=0.905 25 16:02 Moon at Ascending Node 26 00:48 Mercury 1.7°S of Moon 26 19:29 Venus 2.8°S of MoonDec 02 00:52 FIRST QUARTER MOON 04 00 Mercury at Inferior Conjunction 04 21 Mercury at Perihelion 05 16:13 Moon at Apogee: 405414 km 06 11:10 Jupiter 5.2°S of Moon 08 16:26 Pleiades 2.8°N of Moon 09 14:51 Aldebaran 5.9°S of Moon 09 22:04 Moon at Descending Node 10 05:32 Total Lunar Eclipse; mag=1.106 10 05:36 FULL MOON 14 08 Geminid Meteor Shower 15 22:26 Regulus 6.0°N of Moon 17 15:48 LAST QUARTER MOON 19 16:37 Spica 2.1°N of Moon 21 17:56 Moon at Perigee: 364801 km 21 20:30 Winter Solstice 22 17 Ursid Meteor Shower 22 18 Mercury at Greatest Elong: 21.8°W 22 18:05 Antares 4.1°S of Moon 22 18:50 Mercury 2.6°N of Moon 23 02:36 Moon at Ascending Node 24 01:36 Mercury 6.3°N of Antares 24 09:06 NEW 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: 2011 to 2020
The Americas
Below are links to calendars of astronomical events from 2011 to 2020 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 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | |||||
| EST | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | |||||
| CST | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | |||||
| MST | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | |||||
| PST | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | |||||
| AKST | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | |||||
| HST | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | |||||
- 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)
- Time Zones Abbreviations
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.