2011 Sky Event Almanac
Pacific Standard Time
The following table gives the date and time of the important astronomical events for the year. The times listed are for Pacific Standard Time (Coordinated Universal Time − 8 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 | ||||||||
| Pacific Standard Time | ||||||||
| January - June | July - December | |||||||
Date PST Event
(h:m)
Jan 01 10:07 Antares 2.5°S of Moon
02 06:32 Mercury 3.8°N of Moon
03 04:48 Moon at Ascending Node
03 11 Earth at Perihelion: 0.98334 AU
03 17 Quadrantid Meteor Shower
04 00:51 Partial Solar Eclipse; mag=0.858
04 01:03 NEW MOON
08 07 Venus at Greatest Elong: 47.0°W
09 06 Mercury at Greatest Elong: 23.3°W
09 21:38 Moon at Apogee: 404976 km
12 03:31 FIRST QUARTER MOON
15 04:39 Pleiades 1.3°N of Moon
17 16:06 Moon at Descending Node
19 13:21 FULL MOON
21 16:10 Moon at Perigee: 362793 km
25 09:38 Spica 3.0°N of Moon
26 04:57 LAST QUARTER MOON
28 15:53 Antares 2.6°S of Moon
29 19:36 Venus 3.5°N of Moon
30 10:29 Moon at Ascending Node
31 01 Mercury at Aphelion
Feb 01 10:14 Mercury 3.6°S of Moon
02 18:31 NEW MOON
04 09 Mars in Conjunction with Sun
06 15:13 Moon at Apogee: 405924 km
10 23:18 FIRST QUARTER MOON
11 13:32 Pleiades 1.4°N of Moon
14 00:14 Moon at Descending Node
17 01 Neptune in Conjunction with Sun
18 00:36 FULL MOON
18 23:27 Moon at Perigee: 358247 km
21 17:02 Spica 2.8°N of Moon
24 15:26 LAST QUARTER MOON
24 21:26 Antares 2.8°S of Moon
25 00 Mercury at Superior Conjunction
26 12:19 Moon at Ascending Node
28 19:40 Venus 1.6°S of Moon
Mar 04 12:46 NEW MOON
05 23:50 Moon at Apogee: 406584 km
09 06 Mars at Perihelion: 1.38138 AU
10 20:35 Pleiades 1.7°N of Moon
12 15:45 FIRST QUARTER MOON
13 03:55 Moon at Descending Node
15 12 Mercury 2.0°N of Jupiter
16 00 Mercury at Perihelion
17 09 Jupiter at Perihelion: 4.94839 AU
19 10:10 FULL MOON
19 11:09 Moon at Perigee: 356578 km
20 15:21 Vernal Equinox
21 03:00 Spica 2.6°N of Moon
21 04 Uranus in Conjunction with Sun
22 17 Mercury at Greatest Elong: 18.6°E
24 04:48 Antares 3.0°S of Moon
25 13:09 Moon at Ascending Node
26 04:07 LAST QUARTER MOON
Apr 02 01:00 Moon at Apogee: 406656 km
03 06:32 NEW MOON
03 15 Saturn at Opposition
06 07 Jupiter in Conjunction with Sun
07 02:19 Pleiades 1.9°N of Moon
09 04:48 Moon at Descending Node
09 11 Mercury at Inferior Conjunction
11 04:05 FIRST QUARTER MOON
16 21:59 Moon at Perigee: 358088 km
17 14:04 Spica 2.5°N of Moon
17 18:44 FULL MOON
18 16 Venus at Aphelion
19 10 Mercury 0.6°N of Mars
20 14:21 Antares 3.2°S of Moon
21 17:05 Moon at Ascending Node
22 15 Lyrid Meteor Shower
24 18:47 LAST QUARTER MOON
29 10:02 Moon at Apogee: 406043 km
30 20 Mars 0.4°N of Jupiter
May 02 22:51 NEW MOON
04 08:05 Pleiades 2.0°N of Moon
05 04 Eta-Aquarid Meteor Shower
06 06:54 Moon at Descending Node
07 11 Mercury at Greatest Elong: 26.6°W
07 21 Mercury 1.4°S of Venus
10 12:33 FIRST QUARTER MOON
11 07 Venus 0.6°S of Jupiter
11 12 Mercury 2.1°S of Jupiter
15 00:08 Spica 2.6°N of Moon
15 03:18 Moon at Perigee: 362133 km
17 03:09 FULL MOON
17 23 Mercury 1.4°S of Venus
18 00:46 Antares 3.3°S of Moon
19 01:03 Moon at Ascending Node
21 00 Mercury 2.1°S of Mars
23 01 Venus 1.0°S of Mars
24 10:52 LAST QUARTER MOON
27 01:58 Moon at Apogee: 405006 km
30 12:04 Mars 3.8°S of Moon
30 20:00 Venus 4.4°S of Moon
Jun 01 13:03 NEW MOON
01 13:16 Partial Solar Eclipse; mag=0.601
02 12:21 Moon at Descending Node
08 18:11 FIRST QUARTER MOON
11 07:57 Spica 2.6°N of Moon
11 17:42 Moon at Perigee: 367188 km
12 00 Mercury at Perihelion
12 15 Mercury at Superior Conjunction
14 10:17 Antares 3.3°S of Moon
15 10:35 Moon at Ascending Node
15 12:13 Total Lunar Eclipse; mag=1.700
15 12:13 FULL MOON
17 04:15 Venus 4.6°N of Aldebaran
20 17:24 Mars 4.2°S of Pleiades
21 09:16 Summer Solstice
23 03:48 LAST QUARTER MOON
23 20:13 Moon at Apogee: 404275 km
27 22:52 Pleiades 2.0°N of Moon
27 23:40 Mercury 4.7°S of Pollux
28 10:59 Mars 1.7°S of Moon
29 20:14 Moon at Descending Node
|
Date PST Event
(h:m)
Jul 01 00:38 Partial Solar Eclipse; mag=0.097
01 00:54 NEW MOON
04 07 Earth at Aphelion: 1.01674 AU
07 06:04 Moon at Perigee: 369566 km
07 22:29 FIRST QUARTER MOON
08 13:44 Spica 2.6°N of Moon
11 17:48 Antares 3.3°S of Moon
12 18:27 Moon at Ascending Node
14 22:40 FULL MOON
19 21 Mercury at Greatest Elong: 26.8°E
21 14:46 Moon at Apogee: 404358 km
22 21:02 LAST QUARTER MOON
25 07:28 Pleiades 2.1°N of Moon
25 23 Mercury at Aphelion
26 04:51 Mercury 2.1°S of Regulus
27 04:03 Moon at Descending Node
27 08:52 Mars 0.5°N of Moon: Occn.
28 06 Delta-Aquarid Meteor Shower
30 10:40 NEW MOON
Aug 01 03:20 Mercury 1.5°N of Moon
02 12:59 Moon at Perigee: 365756 km
04 19:08 Spica 2.4°N of Moon
06 03:08 FIRST QUARTER MOON
07 23:32 Antares 3.5°S of Moon
08 22:35 Moon at Ascending Node
09 00 Venus at Perihelion
12 22 Perseid Meteor Shower
13 10:58 FULL MOON
16 04 Venus at Superior Conjunction
16 17 Mercury at Inferior Conjunction
18 08:23 Moon at Apogee: 405161 km
21 13:55 LAST QUARTER MOON
21 15:40 Pleiades 2.3°N of Moon
22 14 Neptune at Opposition
23 09:23 Moon at Descending Node
25 05:36 Mars 2.7°N of Moon
27 17:07 Mercury 2.6°N of Moon
28 19:04 NEW MOON
30 09:35 Moon at Perigee: 360858 km
Sep 01 02:06 Spica 2.2°N of Moon
02 22 Mercury at Greatest Elong: 18.1°W
04 05:00 Antares 3.7°S of Moon
04 09:39 FIRST QUARTER MOON
04 23:36 Moon at Ascending Node
07 23 Mercury at Perihelion
08 18:18 Mercury 0.6°N of Regulus
12 01:27 FULL MOON
14 22:23 Moon at Apogee: 406068 km
17 22:46 Pleiades 2.5°N of Moon
19 11:38 Moon at Descending Node
20 05:39 LAST QUARTER MOON
23 00:23 Mars 4.8°N of Moon
23 01:05 Autumnal Equinox
25 16 Uranus at Opposition
27 03:09 NEW MOON
27 17:01 Moon at Perigee: 357556 km
28 11:34 Spica 2.1°N of Moon
28 12 Mercury at Superior Conjunction
Oct 01 12:04 Antares 3.9°S of Moon
02 01:09 Moon at Ascending Node
03 19:15 FIRST QUARTER MOON
11 18:06 FULL MOON
12 03:43 Moon at Apogee: 406435 km
13 13 Saturn in Conjunction with Sun
15 04:49 Pleiades 2.7°N of Moon
16 13:01 Moon at Descending Node
19 19:30 LAST QUARTER MOON
21 14 Orionid Meteor Shower
26 04:26 Moon at Perigee: 357051 km
26 11:56 NEW MOON
27 18:14 Mercury 0.2°N of Moon: Occn.
27 21:11 Venus 1.8°N of Moon
28 17 Jupiter at Opposition
28 21:37 Antares 4.1°S of Moon
29 06:59 Moon at Ascending Node
Nov 01 12 Mercury 2.0°S of Venus
02 08:38 FIRST QUARTER MOON
05 14 S Taurid Meteor Shower
08 05:20 Moon at Apogee: 406177 km
09 23:51 Venus 3.8°N of Antares
10 00:27 Mercury 1.9°N of Antares
10 10:21 Mars 1.3°N of Regulus
10 12:16 FULL MOON
11 03:32 Saturn 4.0°N of Spica
11 10:43 Pleiades 2.8°N of Moon
12 14 N Taurid Meteor Shower
12 16:35 Moon at Descending Node
13 00 Mercury 2.0°S of Venus
14 01 Mercury at Greatest Elong: 22.7°E
17 20 Leonid Meteor Shower
18 07:09 LAST QUARTER MOON
22 09:21 Spica 2.1°N of Moon
23 15:24 Moon at Perigee: 359692 km
24 22:10 NEW MOON
24 22:20 Partial Solar Eclipse; mag=0.905
25 17:02 Moon at Ascending Node
26 01:48 Mercury 1.7°S of Moon
26 20:29 Venus 2.8°S of Moon
Dec 02 01:52 FIRST QUARTER MOON
04 01 Mercury at Inferior Conjunction
04 22 Mercury at Perihelion
05 17:13 Moon at Apogee: 405414 km
08 17:26 Pleiades 2.8°N of Moon
09 23:04 Moon at Descending Node
10 06:32 Total Lunar Eclipse; mag=1.106
10 06:36 FULL MOON
14 09 Geminid Meteor Shower
17 16:48 LAST QUARTER MOON
19 17:37 Spica 2.1°N of Moon
21 18:56 Moon at Perigee: 364801 km
21 21:30 Winter Solstice
22 18 Ursid Meteor Shower
22 19 Mercury at Greatest Elong: 21.8°W
22 19:05 Antares 4.1°S of Moon
22 19:50 Mercury 2.6°N of Moon
23 03:36 Moon at Ascending Node
24 10:06 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
Pacific Standard Time
The following table gives the date and time of the Moon's phases for the year. The times listed are for Pacific Standard Time (Coordinated Universal Time − 8 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 | |||
| Pacific Standard Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| Jan 04 01:03 P | Jan 12 03:31 | Jan 19 13:21 | Jan 26 04:57 |
| Feb 02 18:31 | Feb 10 23:18 | Feb 18 00:36 | Feb 24 15:26 |
| Mar 04 12:46 | Mar 12 15:45 | Mar 19 10:10 | Mar 26 04:07 |
| Apr 03 06:32 | Apr 11 04:05 | Apr 17 18:44 | Apr 24 18:47 |
| May 02 22:51 | May 10 12:33 | May 17 03:09 | May 24 10:52 |
| Jun 01 13:03 P | Jun 08 18:11 | Jun 15 12:13 t | Jun 23 03:48 |
| Jul 01 00:54 P | Jul 07 22:29 | Jul 14 22:40 | Jul 22 21:02 |
| Jul 30 10:40 | Aug 06 03:08 | Aug 13 10:58 | Aug 21 13:55 |
| Aug 28 19:04 | Sep 04 09:39 | Sep 12 01:27 | Sep 20 05:39 |
| Sep 27 03:09 | Oct 03 19:15 | Oct 11 18:06 | Oct 19 19:30 |
| Oct 26 11:56 | Nov 02 08:38 | Nov 10 12:16 | Nov 18 07:09 |
| Nov 24 22:10 P | Dec 02 01:52 | Dec 10 06:36 t | Dec 17 16:48 |
| Dec 24 10:06 | - | - | - |
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)