2011 Sky Event Almanac
Greenwich Mean Time
The following table gives the date and time of the important astronomical events for the year. The times listed are for Greenwich Mean Time (= Coordinated Universal Time) . 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.
| 2011 Sky Event Almanac | ||||||||
| Greenwich Mean Time | ||||||||
| January - June | July - December | |||||||
Date GMT Event
(h:m)
Jan 01 18:07 Antares 2.5°S of Moon
02 14:32 Mercury 3.8°N of Moon
03 12:48 Moon at Ascending Node
03 19 Earth at Perihelion: 0.98334 AU
04 01 Quadrantid Meteor Shower
04 08:51 Partial Solar Eclipse; mag=0.858
04 09:03 NEW MOON
08 15 Venus at Greatest Elong: 47.0°W
09 14 Mercury at Greatest Elong: 23.3°W
10 05:38 Moon at Apogee: 404976 km
12 11:31 FIRST QUARTER MOON
15 12:39 Pleiades 1.3°N of Moon
18 00:06 Moon at Descending Node
19 21:21 FULL MOON
22 00:10 Moon at Perigee: 362793 km
25 17:38 Spica 3.0°N of Moon
26 12:57 LAST QUARTER MOON
28 23:53 Antares 2.6°S of Moon
30 03:36 Venus 3.5°N of Moon
30 18:29 Moon at Ascending Node
31 09 Mercury at Aphelion
Feb 01 18:14 Mercury 3.6°S of Moon
03 02:31 NEW MOON
04 17 Mars in Conjunction with Sun
06 23:13 Moon at Apogee: 405924 km
11 07:18 FIRST QUARTER MOON
11 21:32 Pleiades 1.4°N of Moon
14 08:14 Moon at Descending Node
17 09 Neptune in Conjunction with Sun
18 08:36 FULL MOON
19 07:27 Moon at Perigee: 358247 km
22 01:02 Spica 2.8°N of Moon
24 23:26 LAST QUARTER MOON
25 05:26 Antares 2.8°S of Moon
25 08 Mercury at Superior Conjunction
26 20:19 Moon at Ascending Node
Mar 01 03:40 Venus 1.6°S of Moon
04 20:46 NEW MOON
06 07:50 Moon at Apogee: 406584 km
09 14 Mars at Perihelion: 1.38138 AU
11 04:35 Pleiades 1.7°N of Moon
12 23:45 FIRST QUARTER MOON
13 11:55 Moon at Descending Node
15 20 Mercury 2.0°N of Jupiter
16 08 Mercury at Perihelion
17 17 Jupiter at Perihelion: 4.94839 AU
19 18:10 FULL MOON
19 19:09 Moon at Perigee: 356578 km
20 23:21 Vernal Equinox
21 11:00 Spica 2.6°N of Moon
21 12 Uranus in Conjunction with Sun
23 01 Mercury at Greatest Elong: 18.6°E
24 12:48 Antares 3.0°S of Moon
25 21:09 Moon at Ascending Node
26 12:07 LAST QUARTER MOON
Apr 02 09:00 Moon at Apogee: 406656 km
03 14:32 NEW MOON
03 23 Saturn at Opposition
06 15 Jupiter in Conjunction with Sun
07 10:19 Pleiades 1.9°N of Moon
09 12:48 Moon at Descending Node
09 19 Mercury at Inferior Conjunction
11 12:05 FIRST QUARTER MOON
17 05:59 Moon at Perigee: 358088 km
17 22:04 Spica 2.5°N of Moon
18 02:44 FULL MOON
19 00 Venus at Aphelion
19 18 Mercury 0.6°N of Mars
20 22:21 Antares 3.2°S of Moon
22 01:05 Moon at Ascending Node
22 23 Lyrid Meteor Shower
25 02:47 LAST QUARTER MOON
29 18:02 Moon at Apogee: 406043 km
May 01 04 Mars 0.4°N of Jupiter
03 06:51 NEW MOON
04 16:05 Pleiades 2.0°N of Moon
05 12 Eta-Aquarid Meteor Shower
06 14:54 Moon at Descending Node
07 19 Mercury at Greatest Elong: 26.6°W
08 05 Mercury 1.4°S of Venus
10 20:33 FIRST QUARTER MOON
11 15 Venus 0.6°S of Jupiter
11 20 Mercury 2.1°S of Jupiter
15 08:08 Spica 2.6°N of Moon
15 11:18 Moon at Perigee: 362133 km
17 11:09 FULL MOON
18 07 Mercury 1.4°S of Venus
18 08:46 Antares 3.3°S of Moon
19 09:03 Moon at Ascending Node
21 08 Mercury 2.1°S of Mars
23 09 Venus 1.0°S of Mars
24 18:52 LAST QUARTER MOON
27 09:58 Moon at Apogee: 405006 km
30 20:04 Mars 3.8°S of Moon
31 04:00 Venus 4.4°S of Moon
Jun 01 21:03 NEW MOON
01 21:16 Partial Solar Eclipse; mag=0.601
02 20:21 Moon at Descending Node
09 02:11 FIRST QUARTER MOON
11 15:57 Spica 2.6°N of Moon
12 01:42 Moon at Perigee: 367188 km
12 08 Mercury at Perihelion
12 23 Mercury at Superior Conjunction
14 18:17 Antares 3.3°S of Moon
15 18:35 Moon at Ascending Node
15 20:13 Total Lunar Eclipse; mag=1.700
15 20:13 FULL MOON
17 12:15 Venus 4.6°N of Aldebaran
21 01:24 Mars 4.2°S of Pleiades
21 17:16 Summer Solstice
23 11:48 LAST QUARTER MOON
24 04:13 Moon at Apogee: 404275 km
28 06:52 Pleiades 2.0°N of Moon
28 07:40 Mercury 4.7°S of Pollux
28 18:59 Mars 1.7°S of Moon
30 04:14 Moon at Descending Node
|
Date GMT Event
(h:m)
Jul 01 08:38 Partial Solar Eclipse; mag=0.097
01 08:54 NEW MOON
04 15 Earth at Aphelion: 1.01674 AU
07 14:04 Moon at Perigee: 369566 km
08 06:29 FIRST QUARTER MOON
08 21:44 Spica 2.6°N of Moon
12 01:48 Antares 3.3°S of Moon
13 02:27 Moon at Ascending Node
15 06:40 FULL MOON
20 05 Mercury at Greatest Elong: 26.8°E
21 22:46 Moon at Apogee: 404358 km
23 05:02 LAST QUARTER MOON
25 15:28 Pleiades 2.1°N of Moon
26 07 Mercury at Aphelion
26 12:51 Mercury 2.1°S of Regulus
27 12:03 Moon at Descending Node
27 16:52 Mars 0.5°N of Moon: Occn.
28 14 Delta-Aquarid Meteor Shower
30 18:40 NEW MOON
Aug 01 11:20 Mercury 1.5°N of Moon
02 20:59 Moon at Perigee: 365756 km
05 03:08 Spica 2.4°N of Moon
06 11:08 FIRST QUARTER MOON
08 07:32 Antares 3.5°S of Moon
09 06:35 Moon at Ascending Node
09 08 Venus at Perihelion
13 06 Perseid Meteor Shower
13 18:58 FULL MOON
16 12 Venus at Superior Conjunction
17 01 Mercury at Inferior Conjunction
18 16:23 Moon at Apogee: 405161 km
21 21:55 LAST QUARTER MOON
21 23:40 Pleiades 2.3°N of Moon
22 22 Neptune at Opposition
23 17:23 Moon at Descending Node
25 13:36 Mars 2.7°N of Moon
28 01:07 Mercury 2.6°N of Moon
29 03:04 NEW MOON
30 17:35 Moon at Perigee: 360858 km
Sep 01 10:06 Spica 2.2°N of Moon
03 06 Mercury at Greatest Elong: 18.1°W
04 13:00 Antares 3.7°S of Moon
04 17:39 FIRST QUARTER MOON
05 07:36 Moon at Ascending Node
08 07 Mercury at Perihelion
09 02:18 Mercury 0.6°N of Regulus
12 09:27 FULL MOON
15 06:23 Moon at Apogee: 406068 km
18 06:46 Pleiades 2.5°N of Moon
19 19:38 Moon at Descending Node
20 13:39 LAST QUARTER MOON
23 08:23 Mars 4.8°N of Moon
23 09:05 Autumnal Equinox
26 00 Uranus at Opposition
27 11:09 NEW MOON
28 01:01 Moon at Perigee: 357556 km
28 19:34 Spica 2.1°N of Moon
28 20 Mercury at Superior Conjunction
Oct 01 20:04 Antares 3.9°S of Moon
02 09:09 Moon at Ascending Node
04 03:15 FIRST QUARTER MOON
12 02:06 FULL MOON
12 11:43 Moon at Apogee: 406435 km
13 21 Saturn in Conjunction with Sun
15 12:49 Pleiades 2.7°N of Moon
16 21:01 Moon at Descending Node
20 03:30 LAST QUARTER MOON
21 22 Orionid Meteor Shower
26 12:26 Moon at Perigee: 357051 km
26 19:56 NEW MOON
28 02:14 Mercury 0.2°N of Moon: Occn.
28 05:11 Venus 1.8°N of Moon
29 01 Jupiter at Opposition
29 05:37 Antares 4.1°S of Moon
29 14:59 Moon at Ascending Node
Nov 01 20 Mercury 2.0°S of Venus
02 16:38 FIRST QUARTER MOON
05 22 S Taurid Meteor Shower
08 13:20 Moon at Apogee: 406177 km
10 07:51 Venus 3.8°N of Antares
10 08:27 Mercury 1.9°N of Antares
10 18:21 Mars 1.3°N of Regulus
10 20:16 FULL MOON
11 11:32 Saturn 4.0°N of Spica
11 18:43 Pleiades 2.8°N of Moon
12 22 N Taurid Meteor Shower
13 00:35 Moon at Descending Node
13 08 Mercury 2.0°S of Venus
14 09 Mercury at Greatest Elong: 22.7°E
18 04 Leonid Meteor Shower
18 15:09 LAST QUARTER MOON
22 17:21 Spica 2.1°N of Moon
23 23:24 Moon at Perigee: 359692 km
25 06:10 NEW MOON
25 06:20 Partial Solar Eclipse; mag=0.905
26 01:02 Moon at Ascending Node
26 09:48 Mercury 1.7°S of Moon
27 04:29 Venus 2.8°S of Moon
Dec 02 09:52 FIRST QUARTER MOON
04 09 Mercury at Inferior Conjunction
05 06 Mercury at Perihelion
06 01:13 Moon at Apogee: 405414 km
09 01:26 Pleiades 2.8°N of Moon
10 07:04 Moon at Descending Node
10 14:32 Total Lunar Eclipse; mag=1.106
10 14:36 FULL MOON
14 17 Geminid Meteor Shower
18 00:48 LAST QUARTER MOON
20 01:37 Spica 2.1°N of Moon
22 02:56 Moon at Perigee: 364801 km
22 05:30 Winter Solstice
23 02 Ursid Meteor Shower
23 03 Mercury at Greatest Elong: 21.8°W
23 03:05 Antares 4.1°S of Moon
23 03:50 Mercury 2.6°N of Moon
23 11:36 Moon at Ascending Node
24 18:06 NEW MOON
|
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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
2011 Phases of the Moon
Greenwich Mean Time
The following table gives the date and time of the Moon's phases for the year. The times listed are for Greenwich Mean Time (= Coordinated Universal Time) . This time zone may have different names in different countries. If Daylight Saving Time is in effect, add one hour to the times listed.
| 2011 Phases of the Moon | |||
| Greenwich Mean Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| Jan 04 09:03 P | Jan 12 11:31 | Jan 19 21:21 | Jan 26 12:57 |
| Feb 03 02:31 | Feb 11 07:18 | Feb 18 08:36 | Feb 24 23:26 |
| Mar 04 20:46 | Mar 12 23:45 | Mar 19 18:10 | Mar 26 12:07 |
| Apr 03 14:32 | Apr 11 12:05 | Apr 18 02:44 | Apr 25 02:47 |
| May 03 06:51 | May 10 20:33 | May 17 11:09 | May 24 18:52 |
| Jun 01 21:03 P | Jun 09 02:11 | Jun 15 20:13 t | Jun 23 11:48 |
| Jul 01 08:54 P | Jul 08 06:29 | Jul 15 06:40 | Jul 23 05:02 |
| Jul 30 18:40 | Aug 06 11:08 | Aug 13 18:58 | Aug 21 21:55 |
| Aug 29 03:04 | Sep 04 17:39 | Sep 12 09:27 | Sep 20 13:39 |
| Sep 27 11:09 | Oct 04 03:15 | Oct 12 02:06 | Oct 20 03:30 |
| Oct 26 19:56 | Nov 02 16:38 | Nov 10 20:16 | Nov 18 15:09 |
| Nov 25 06:10 P | Dec 02 09:52 | Dec 10 14:36 t | Dec 18 00:48 |
| Dec 24 18:06 | - | - | - |
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: 2011 to 2020
Europe, Africa, and the Middle East
Below are links to sky event almanacs from 2011 to 2020 for six time zones
in Europe, Africa, and the Middle East.
Choose a time zone and click on a year to get a sky event almanac for that year.
| Sky Event Almanac - Europe, Africa, & Middle East | |||||||||||||||
| CVT | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | |||||
| GMT | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | |||||
| CET | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | |||||
| EET | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | |||||
| MSK | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | |||||
| GST | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | |||||
- CVT = Cape Verde Time (= UTC - 1 hour)
- GMT = Greenwich Mean Time (= UTC + 0 hour)
- CET = Central European Time (= UTC + 1 hour)
- EET = Eastern European Time (= UTC + 2 hours)
- MSK = Moscow Time (= UTC + 3 hours)
- GST = Gulf Standard Time (= UTC + 4 hours)
(where UTC = Coordinated Universal 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 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
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
Interactive Sky Chart (Sky and Telescope)
Sky Maps (sky-map.org)
Astronomical Almanac (Sky and Telescope)
Weather Forecast for Astronomy (Clear Outside)
GOES-East Images (NOAA-GOES)
Astronomy Tools (Astronomy Tools)