2011 Sky Event Almanac
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 (Coordinated Universal Time − 9 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.
| 2011 Sky Event Almanac | ||||||||
| 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
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 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 Moon
Mar 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
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
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 Jupiter
May 02 21:51 NEW MOON
04 07:05 Pleiades 2.0°N of 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 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
30 11:04 Mars 3.8°S of Moon
30 19:00 Venus 4.4°S of Moon
Jun 01 12:03 NEW MOON
01 12:16 Partial Solar Eclipse; mag=0.601
02 11:21 Moon at Descending Node
08 17:11 FIRST QUARTER MOON
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
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 04 06 Earth at Aphelion: 1.01674 AU
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
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
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
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 km
Sep 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
08 17:18 Mercury 0.6°N of Regulus
12 00:27 FULL MOON
14 21:23 Moon at Apogee: 406068 km
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
25 15 Uranus at Opposition
27 02:09 NEW MOON
27 16:01 Moon at Perigee: 357556 km
28 10:34 Spica 2.1°N of Moon
28 11 Mercury at Superior Conjunction
Oct 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 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
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 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 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
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 Moon
Dec 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
08 16:26 Pleiades 2.8°N 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
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 09:06 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
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 (Coordinated Universal Time − 9 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.
| 2011 Phases of the Moon | |||
| Alaska Standard Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| Jan 04 00:03 P | Jan 12 02:31 | Jan 19 12:21 | Jan 26 03:57 |
| Feb 02 17:31 | Feb 10 22:18 | Feb 17 23:36 | Feb 24 14:26 |
| Mar 04 11:46 | Mar 12 14:45 | Mar 19 09:10 | Mar 26 03:07 |
| Apr 03 05:32 | Apr 11 03:05 | Apr 17 17:44 | Apr 24 17:47 |
| May 02 21:51 | May 10 11:33 | May 17 02:09 | May 24 09:52 |
| Jun 01 12:03 P | Jun 08 17:11 | Jun 15 11:13 t | Jun 23 02:48 |
| Jun 30 23:54 P | Jul 07 21:29 | Jul 14 21:40 | Jul 22 20:02 |
| Jul 30 09:40 | Aug 06 02:08 | Aug 13 09:58 | Aug 21 12:55 |
| Aug 28 18:04 | Sep 04 08:39 | Sep 12 00:27 | Sep 20 04:39 |
| Sep 27 02:09 | Oct 03 18:15 | Oct 11 17:06 | Oct 19 18:30 |
| Oct 26 10:56 | Nov 02 07:38 | Nov 10 11:16 | Nov 18 06:09 |
| Nov 24 21:10 P | Dec 02 00:52 | Dec 10 05:36 t | Dec 17 15:48 |
| Dec 24 09:06 | - | - | - |
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
The Americas
Below are links to sky event almanacs from 2011 to 2020 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 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | |||||
| 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 | |||||
- 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)
- 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)