2017 Sky Event Almanac
Mountain Standard Time
The following table gives the date and time of the important astronomical events for the year. The times listed are for Mountain Standard Time (Coordinated Universal Time − 7 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.
| 2017 Sky Event Almanac | ||||||||
| Mountain Standard Time | ||||||||
| January - June | July - December | |||||||
Date MST Event
(h:m)
Jan 02 02:20 Venus 1.9°S of Moon
02 11:14 Moon at Descending Node
02 23:47 Mars 0.2°S of Moon: Occn.
03 07 Quadrantid Meteor Shower
04 08 Earth at Perihelion: 0.98331 AU
05 12:47 FIRST QUARTER MOON
09 07:07 Aldebaran 0.4°S of Moon
09 23:07 Moon at Perigee: 363242 km
12 04:34 FULL MOON
12 06 Venus at Greatest Elong: 47.1°E
14 21:07 Regulus 0.9°N of Moon
15 03:44 Moon at Ascending Node
18 22:26 Jupiter 2.7°S of Moon
19 03 Mercury at Greatest Elong: 24.1°W
19 15:14 LAST QUARTER MOON
21 17:14 Moon at Apogee: 404913 km
24 03:37 Saturn 3.6°S of Moon
25 17:46 Mercury 3.7°S of Moon
27 17:07 NEW MOON
29 15:21 Moon at Descending Node
31 06:11 Jupiter 3.5°N of Spica
31 07:34 Venus 4.1°N of Moon
31 18:09 Mars 2.3°N of Moon
Feb 03 21:19 FIRST QUARTER MOON
05 14:14 Aldebaran 0.2°S of Moon
06 06:59 Moon at Perigee: 368817 km
07 07 Mercury at Aphelion
10 17:33 FULL MOON
10 17:44 Pen. Lunar Eclipse; mag=0.988
11 07:04 Regulus 0.8°N of Moon
11 12:49 Moon at Ascending Node
15 07:55 Jupiter 2.7°S of Moon
17 00 Jupiter at Aphelion: 5.45652 AU
18 12:33 LAST QUARTER MOON
18 14:14 Moon at Apogee: 404376 km
20 09 Venus at Perihelion
20 16:44 Saturn 3.6°S of Moon
25 23:28 Moon at Descending Node
26 07:53 Annular Solar Eclipse; mag=0.992
26 07:58 NEW MOON
Mar 01 11:58 Mars 4.3°N of Moon
01 19 Neptune in Conjunction with Sun
03 00:24 Moon at Perigee: 369065 km
04 19:38 Aldebaran 0.2°S of Moon
05 04:32 FIRST QUARTER MOON
06 17 Mercury at Superior Conjunction
10 15:20 Regulus 0.8°N of Moon
10 21:17 Moon at Ascending Node
12 07:54 FULL MOON
14 13:04 Jupiter 2.5°S of Moon
18 10:25 Moon at Apogee: 404651 km
20 03:29 Vernal Equinox
20 03:49 Saturn 3.4°S of Moon
20 08:58 LAST QUARTER MOON
23 07 Mercury at Perihelion
25 04 Venus at Inferior Conjunction
25 08:41 Moon at Descending Node
27 19:57 NEW MOON
30 05:39 Moon at Perigee: 363855 km
Apr 01 01:50 Aldebaran 0.3°S of Moon
01 03 Mercury at Greatest Elong: 19.0°E
03 11:39 FIRST QUARTER MOON
06 21:30 Regulus 0.7°N of Moon
07 02:14 Moon at Ascending Node
07 14 Jupiter at Opposition
10 14:20 Jupiter 2.2°S of Moon
10 23:08 FULL MOON
13 23 Uranus in Conjunction with Sun
15 03:05 Moon at Apogee: 405478 km
16 11:39 Saturn 3.2°S of Moon
19 02:57 LAST QUARTER MOON
19 23 Mercury at Inferior Conjunction
21 01:16 Mars 3.4°S of Pleiades
21 15:30 Moon at Descending Node
22 05 Lyrid Meteor Shower
26 05:16 NEW MOON
27 09:18 Moon at Perigee: 359325 km
28 10:19 Aldebaran 0.5°S of Moon
May 02 19:47 FIRST QUARTER MOON
04 02:49 Regulus 0.5°N of Moon
04 03:42 Moon at Ascending Node
04 18 Eta-Aquarid Meteor Shower
07 14:24 Jupiter 2.1°S of Moon
10 14:43 FULL MOON
12 12:51 Moon at Apogee: 406212 km
13 16:07 Saturn 3.1°S of Moon
17 16 Mercury at Greatest Elong: 25.8°W
18 17:33 LAST QUARTER MOON
18 18:30 Moon at Descending Node
22 05:32 Venus 2.4°N of Moon
23 18:20 Mercury 1.6°N of Moon
25 12:44 NEW MOON
25 18:23 Moon at Perigee: 357210 km
31 04:56 Moon at Ascending Node
31 09:08 Regulus 0.3°N of Moon
Jun 01 05:42 FIRST QUARTER MOON
03 04 Venus at Greatest Elong: 45.9°W
03 16:57 Jupiter 2.3°S of Moon
08 15:21 Moon at Apogee: 406402 km
09 06:10 FULL MOON
09 18:25 Saturn 3.1°S of Moon
12 17 Venus at Aphelion
14 19:40 Moon at Descending Node
15 02 Saturn at Opposition
17 04:33 LAST QUARTER MOON
19 06 Mercury at Perihelion
20 14:13 Venus 2.4°N of Moon
20 21:25 Summer Solstice
21 07 Mercury at Superior Conjunction
22 07:23 Aldebaran 0.5°S of Moon
23 03:49 Moon at Perigee: 357938 km
23 19:31 NEW MOON
27 09:26 Moon at Ascending Node
27 17:26 Regulus 0.1°N of Moon
30 17:51 FIRST QUARTER MOON
|
Date MST Event
(h:m)
Jul 01 00:28 Jupiter 2.7°S of Moon
03 13 Earth at Aphelion: 1.01668 AU
05 21:27 Moon at Apogee: 405934 km
06 20:34 Saturn 3.2°S of Moon
08 21:07 FULL MOON
11 22:17 Moon at Descending Node
13 11:03 Venus 3.1°N of Aldebaran
16 12:26 LAST QUARTER MOON
19 16:37 Aldebaran 0.4°S of Moon
20 04:13 Venus 2.7°N of Moon
21 10:09 Moon at Perigee: 361238 km
23 02:46 NEW MOON
24 17:46 Moon at Ascending Node
25 01:49 Mercury 0.9°S of Moon: Occn.
25 03:14 Regulus 0.0°S of Moon
25 10:03 Mercury 0.8°S of Regulus
26 17 Mars in Conjunction with Sun
27 20 Delta-Aquarid Meteor Shower
28 13:15 Jupiter 3.1°S of Moon
29 21 Mercury at Greatest Elong: 27.2°E
30 08:23 FIRST QUARTER MOON
Aug 02 06 Mercury at Aphelion
02 10:55 Moon at Apogee: 405026 km
03 00:31 Saturn 3.5°S of Moon
07 11:11 FULL MOON
07 11:20 Partial Lunar Eclipse; mag=0.246
08 03:56 Moon at Descending Node
12 12 Perseid Meteor Shower
14 18:15 LAST QUARTER MOON
15 23:39 Aldebaran 0.4°S of Moon
18 06:14 Moon at Perigee: 366129 km
18 21:45 Venus 2.2°N of Moon
21 03:34 Moon at Ascending Node
21 11:26 Total Solar Eclipse; mag=1.031
21 11:30 NEW MOON
25 06:00 Jupiter 3.5°S of Moon
26 14 Mercury at Inferior Conjunction
29 01:13 FIRST QUARTER MOON
30 04:25 Moon at Apogee: 404307 km
30 07:23 Saturn 3.6°S of Moon
Sep 04 11:41 Moon at Descending Node
04 21 Neptune at Opposition
06 00:03 FULL MOON
09 22:30 Mercury 0.7°S of Regulus
10 14:44 Jupiter 2.9°N of Spica
12 03 Mercury at Greatest Elong: 17.9°W
12 05:09 Aldebaran 0.4°S of Moon
12 23:25 LAST QUARTER MOON
13 09:04 Moon at Perigee: 369856 km
15 05 Mercury at Perihelion
16 11 Mercury 0.1°N of Mars
17 11:28 Moon at Ascending Node
17 17:56 Venus 0.5°N of Moon: Occn.
17 21:32 Regulus 0.1°S of Moon
18 12:42 Mars 0.1°S of Moon: Occn.
18 16:22 Mercury 0.0°N of Moon: Occn.
19 14:30 Venus 0.4°N of Regulus
19 22:30 NEW MOON
22 00:51 Jupiter 3.7°S of Moon
22 13:02 Autumnal Equinox
26 17:09 Saturn 3.5°S of Moon
26 23:49 Moon at Apogee: 404342 km
27 19:54 FIRST QUARTER MOON
Oct 01 19:05 Moon at Descending Node
03 02 Venus at Perihelion
05 09 Venus 0.2°N of Mars
05 11:40 FULL MOON
07 15 Mars at Aphelion: 1.66609 AU
08 14 Mercury at Superior Conjunction
08 22:51 Moon at Perigee: 366858 km
09 11:05 Aldebaran 0.6°S of Moon
12 05:25 LAST QUARTER MOON
14 15:10 Moon at Ascending Node
15 03:54 Regulus 0.2°S of Moon
17 03:04 Mars 1.8°S of Moon
17 17:21 Venus 2.0°S of Moon
19 10 Uranus at Opposition
19 12:12 NEW MOON
21 04 Orionid Meteor Shower
24 04:54 Saturn 3.3°S of Moon
24 19:25 Moon at Apogee: 405151 km
26 11 Jupiter in Conjunction with Sun
27 15:22 FIRST QUARTER MOON
28 23:41 Moon at Descending Node
Nov 02 06:58 Venus 3.3°N of Spica
03 22:23 FULL MOON
05 04 S Taurid Meteor Shower
05 17:09 Moon at Perigee: 361438 km
05 19:19 Aldebaran 0.8°S of Moon
10 13:37 LAST QUARTER MOON
10 15:40 Moon at Ascending Node
11 09:07 Regulus 0.4°S of Moon
12 04 N Taurid Meteor Shower
12 10:50 Mercury 2.2°N of Antares
14 17:40 Mars 3.2°S of Moon
16 14:26 Jupiter 4.1°S of Moon
17 10 Leonid Meteor Shower
18 04:42 NEW MOON
20 17:34 Saturn 3.0°S of Moon
21 11:52 Moon at Apogee: 406132 km
23 17 Mercury at Greatest Elong: 22.0°E
25 01:22 Moon at Descending Node
26 10:03 FIRST QUARTER MOON
29 07:30 Mars 2.9°N of Spica
Dec 03 06:00 Aldebaran 0.8°S of Moon
03 08:47 FULL MOON
04 01:42 Moon at Perigee: 357496 km
07 17:39 Moon at Ascending Node
08 15:25 Regulus 0.7°S of Moon
10 00:51 LAST QUARTER MOON
12 05 Mercury at Perihelion
12 19 Mercury at Inferior Conjunction
13 09:27 Mars 4.2°S of Moon
13 23 Geminid Meteor Shower
14 07:26 Jupiter 4.2°S of Moon
17 23:31 NEW MOON
18 18:27 Moon at Apogee: 406605 km
21 09:29 Winter Solstice
21 13 Saturn in Conjunction with Sun
22 03:04 Moon at Descending Node
22 08 Ursid Meteor Shower
26 02:20 FIRST QUARTER MOON
30 17:25 Aldebaran 0.7°S of 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
2017 Phases of the Moon
Mountain Standard Time
The following table gives the date and time of the Moon's phases for the year. The times listed are for Mountain Standard Time (Coordinated Universal Time − 7 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.
| 2017 Phases of the Moon | |||
| Mountain Standard Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| - | Jan 05 12:47 | Jan 12 04:34 | Jan 19 15:14 |
| Jan 27 17:07 | Feb 03 21:19 | Feb 10 17:33 n | Feb 18 12:33 |
| Feb 26 07:58 A | Mar 05 04:32 | Mar 12 07:54 | Mar 20 08:58 |
| Mar 27 19:57 | Apr 03 11:39 | Apr 10 23:08 | Apr 19 02:57 |
| Apr 26 05:16 | May 02 19:47 | May 10 14:43 | May 18 17:33 |
| May 25 12:44 | Jun 01 05:42 | Jun 09 06:10 | Jun 17 04:33 |
| Jun 23 19:31 | Jun 30 17:51 | Jul 08 21:07 | Jul 16 12:26 |
| Jul 23 02:46 | Jul 30 08:23 | Aug 07 11:11 p | Aug 14 18:15 |
| Aug 21 11:30 T | Aug 29 01:13 | Sep 06 00:03 | Sep 12 23:25 |
| Sep 19 22:30 | Sep 27 19:54 | Oct 05 11:40 | Oct 12 05:25 |
| Oct 19 12:12 | Oct 27 15:22 | Nov 03 22:23 | Nov 10 13:37 |
| Nov 18 04:42 | Nov 26 10:03 | Dec 03 08:47 | Dec 10 00:51 |
| Dec 17 23:31 | Dec 26 02:20 | - | - |
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)