2091 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.
| 2091 Sky Event Almanac | ||||||||
| Mountain Standard Time | ||||||||
| January - June | July - December | |||||||
Date MST Event
(h:m)
Jan 02 16:45 Aldebaran 0.4°S of Moon
03 10:26 Saturn 3.6°N of Moon
04 07 Quadrantid Meteor Shower
04 13 Earth at Perihelion: 0.98327 AU
05 08:50 FULL MOON
08 13:26 Regulus 1.7°N of Moon
09 10:42 Moon at Ascending Node
09 15:29 Moon at Perigee: 368696 km
10 07:32 Mars 2.2°N of Moon
10 13 Mercury 0.7°S of Jupiter
12 05:34 LAST QUARTER MOON
15 18:06 Venus 2.5°S of Moon
16 21 Mercury at Aphelion
17 16:17 Jupiter 4.5°S of Moon
19 09:31 NEW MOON
22 19:23 Moon at Descending Node
25 07:57 Moon at Apogee: 404798 km
27 12:23 FIRST QUARTER MOON
30 02:12 Aldebaran 0.2°S of Moon
30 17:22 Saturn 3.8°N of Moon
Feb 03 21:46 FULL MOON
04 22:08 Regulus 1.6°N of Moon
05 11 Mercury at Superior Conjunction
05 16:51 Moon at Ascending Node
06 02:12 Moon at Perigee: 363106 km
06 16:07 Mars 2.8°N of Moon
10 14:11 LAST QUARTER MOON
10 17 Venus 1.2°N of Jupiter
14 09 Neptune at Opposition
14 09:33 Jupiter 4.4°S of Moon
14 14 Mars at Aphelion: 1.66607 AU
14 17:11 Venus 3.2°S of Moon
18 02:38 NEW MOON
18 02:52 Partial Solar Eclipse; mag=0.656
19 01:55 Moon at Descending Node
22 01:37 Moon at Apogee: 405740 km
26 07:47 FIRST QUARTER MOON
26 10:48 Aldebaran 0.2°S of Moon
27 01:57 Saturn 4.0°N of Moon
Mar 01 21 Mercury at Perihelion
04 08:57 Regulus 1.6°N of Moon
04 16 Mercury at Greatest Elong: 18.2°E
05 03:18 Moon at Ascending Node
05 08:55 Total Lunar Eclipse; mag=1.283
05 08:59 FULL MOON
05 13:49 Mars 3.8°N of Moon
05 22 Uranus in Conjunction with Sun
06 09:02 Moon at Perigee: 358572 km
06 12 Mars at Opposition
12 00:02 LAST QUARTER MOON
14 00:20 Jupiter 4.2°S of Moon
16 21:40 Venus 2.3°S of Moon
18 08:29 Moon at Descending Node
19 20:45 NEW MOON
20 01:40 Vernal Equinox
21 00 Mercury at Inferior Conjunction
21 10:48 Moon at Apogee: 406436 km
25 17:49 Aldebaran 0.2°S of Moon
26 11:34 Saturn 4.0°N of Moon
27 23:31 FIRST QUARTER MOON
31 19:47 Regulus 1.6°N of Moon
Apr 01 10:39 Mars 3.8°N of Moon
01 14:02 Moon at Ascending Node
03 18:31 FULL MOON
03 20:26 Moon at Perigee: 356783 km
09 19 Venus at Aphelion
10 11:45 LAST QUARTER MOON
10 12:54 Jupiter 4.0°S of Moon
13 03 Mercury 0.3°S of Venus
14 12:56 Moon at Descending Node
16 02:05 Mercury 0.5°S of Moon: Occn.
16 03:58 Venus 0.2°N of Moon: Occn.
17 12:25 Moon at Apogee: 406548 km
17 21 Mercury at Greatest Elong: 27.6°W
18 14:20 NEW MOON
21 23:43 Aldebaran 0.4°S of Moon
22 22:09 Saturn 3.9°N of Moon
23 04 Lyrid Meteor Shower
26 11:20 FIRST QUARTER MOON
28 04:39 Regulus 1.4°N of Moon
28 18:08 Mars 2.5°N of Moon
28 21:03 Moon at Ascending Node
May 02 07:03 Moon at Perigee: 358058 km
03 02:46 FULL MOON
05 01 Mercury 1.0°S of Venus
05 17 Eta-Aquarid Meteor Shower
07 23:13 Jupiter 3.7°S of Moon
10 01:36 LAST QUARTER MOON
11 15:02 Moon at Descending Node
14 20:48 Moon at Apogee: 405973 km
16 11:31 Venus 3.0°N of Moon
18 06:07 NEW MOON
20 09:59 Saturn 3.8°N of Moon
25 11:05 Regulus 1.2°N of Moon
25 19:42 FIRST QUARTER MOON
25 23:26 Moon at Ascending Node
26 12:12 Mars 0.6°N of Moon: Occn.
26 21 Mercury at Superior Conjunction
28 20 Mercury at Perihelion
30 12:30 Moon at Perigee: 361863 km
Jun 01 10:31 FULL MOON
04 06:47 Jupiter 3.7°S of Moon
07 16:52 Moon at Descending Node
08 17:22 LAST QUARTER MOON
11 12:05 Moon at Apogee: 404966 km
15 12:19 Aldebaran 0.4°S of Moon
16 19:41 NEW MOON
19 16 Saturn in Conjunction with Sun
20 18:17 Summer Solstice
21 16:19 Regulus 0.9°N of Moon
22 00:09 Moon at Ascending Node
23 13:03 Mars 1.4°S of Moon
24 01:31 FIRST QUARTER MOON
27 04:38 Moon at Perigee: 366857 km
30 04 Mercury at Greatest Elong: 25.6°E
30 18:54 FULL MOON
|
Date MST Event
(h:m)
Jul 01 11:18 Jupiter 3.8°S of Moon
04 20:55 Moon at Descending Node
07 06 Earth at Aphelion: 1.01668 AU
08 10:21 LAST QUARTER MOON
09 00 Jupiter at Opposition
09 06:01 Moon at Apogee: 404243 km
11 20 Mercury at Aphelion
12 20:10 Aldebaran 0.3°S of Moon
14 13:54 Saturn 3.6°N of Moon
16 07:15 NEW MOON
17 12:32 Mercury 1.9°S of Moon
18 22:18 Regulus 0.8°N of Moon
19 03:19 Moon at Ascending Node
21 18:37 Mars 3.4°S of Moon
22 21:02 Moon at Perigee: 369671 km
23 06:02 FIRST QUARTER MOON
24 19 Venus at Superior Conjunction
27 21 Mercury at Inferior Conjunction
28 13:39 Jupiter 4.1°S of Moon
28 19 Delta-Aquarid Meteor Shower
30 05:01 FULL MOON
31 04 Venus at Perihelion
Aug 01 03:39 Moon at Descending Node
06 00:42 Moon at Apogee: 404324 km
07 03:44 LAST QUARTER MOON
09 04:37 Aldebaran 0.2°S of Moon
11 04:54 Saturn 3.5°N of Moon
11 21:31 Mars 1.6°N of Spica
13 07:27 Mercury 0.9°N of Moon: Occn.
13 11 Perseid Meteor Shower
14 17:22 NEW MOON
14 17:32 Total Solar Eclipse; mag=1.022
15 10:37 Moon at Ascending Node
15 18 Mercury at Greatest Elong: 18.8°W
17 23:08 Moon at Perigee: 366147 km
19 17 Neptune in Conjunction with Sun
21 10:43 FIRST QUARTER MOON
24 16:04 Jupiter 4.3°S of Moon
24 20 Mercury at Perihelion
28 11:21 Moon at Descending Node
28 17:35 Total Lunar Eclipse; mag=1.235
28 17:39 FULL MOON
Sep 02 18:49 Moon at Apogee: 405142 km
05 12:49 Aldebaran 0.2°S of Moon
05 20:47 LAST QUARTER MOON
07 18:47 Saturn 3.4°N of Moon
09 19 Mercury at Superior Conjunction
10 01 Uranus at Opposition
11 16:11 Regulus 0.8°N of Moon
11 20:31 Moon at Ascending Node
13 02:34 NEW MOON
14 18:40 Moon at Perigee: 361131 km
19 17:10 FIRST QUARTER MOON
20 21:23 Jupiter 4.3°S of Moon
22 10:49 Autumnal Equinox
24 17:29 Moon at Descending Node
27 08:56 FULL MOON
28 16:12 Venus 2.6°N of Spica
30 09:41 Moon at Apogee: 406084 km
30 23:26 Mercury 1.5°N of Spica
Oct 02 20:01 Aldebaran 0.3°S of Moon
05 05:41 Saturn 3.2°N of Moon
05 12:53 LAST QUARTER MOON
09 02:33 Regulus 0.7°N of Moon
09 05:41 Moon at Ascending Node
09 16 Mercury 1.9°S of Venus
12 11:29 NEW MOON
13 02:20 Moon at Perigee: 357592 km
13 21:26 Venus 4.9°S of Moon
18 07:38 Jupiter 4.0°S of Moon
19 02:50 FIRST QUARTER MOON
19 06:36 Mars 3.5°N of Antares
21 20:27 Moon at Descending Node
22 03 Orionid Meteor Shower
23 04 Saturn at Perihelion: 9.01429 AU
26 02 Mercury at Greatest Elong: 24.2°E
27 02:18 FULL MOON
27 15:34 Moon at Apogee: 406488 km
30 02:14 Aldebaran 0.5°S of Moon
Nov 01 12:26 Saturn 3.0°N of Moon
04 03:27 LAST QUARTER MOON
04 20:17 Venus 3.7°N of Antares
05 10:49 Moon at Ascending Node
05 11:32 Regulus 0.5°N of Moon
06 04 S Taurid Meteor Shower
10 14:06 Moon at Perigee: 356866 km
10 20:42 NEW MOON
13 03 N Taurid Meteor Shower
14 23:12 Jupiter 3.5°S of Moon
17 01 Mercury at Inferior Conjunction
17 16:38 FIRST QUARTER MOON
17 21:23 Moon at Descending Node
18 09 Leonid Meteor Shower
20 12 Venus at Aphelion
20 19 Mercury at Perihelion
23 16:32 Moon at Apogee: 406275 km
25 20:43 FULL MOON
26 08:14 Aldebaran 0.6°S of Moon
28 15:42 Saturn 2.8°N of Moon
29 23 Venus 0.6°S of Mars
Dec 02 11:51 Moon at Ascending Node
02 18:08 Regulus 0.2°N of Moon
03 15:55 LAST QUARTER MOON
04 04 Mercury at Greatest Elong: 20.4°W
08 20:11 Mercury 3.2°S of Moon
09 01:19 Moon at Perigee: 359394 km
10 06:54 NEW MOON
10 23 Venus 1.6°S of Jupiter
12 11:52 Mars 4.1°S of Moon
12 18:50 Jupiter 3.0°S of Moon
12 22:51 Venus 4.4°S of Moon
14 23 Geminid Meteor Shower
15 00:02 Moon at Descending Node
17 10:29 FIRST QUARTER MOON
19 21 Mars 0.8°S of Jupiter
21 03:59 Moon at Apogee: 405544 km
21 08:37 Winter Solstice
23 07 Ursid Meteor Shower
23 14:55 Aldebaran 0.5°S of Moon
25 14:59 FULL MOON
25 17:53 Saturn 2.9°N of Moon
27 09 Saturn at Opposition
29 12:59 Moon at Ascending Node
29 23:26 Regulus 0.0°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
2091 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.
| 2091 Phases of the Moon | |||
| Mountain Standard Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| - | - | Jan 05 08:50 | Jan 12 05:34 |
| Jan 19 09:31 | Jan 27 12:23 | Feb 03 21:46 | Feb 10 14:11 |
| Feb 18 02:38 P | Feb 26 07:47 | Mar 05 08:59 t | Mar 12 00:02 |
| Mar 19 20:45 | Mar 27 23:31 | Apr 03 18:31 | Apr 10 11:45 |
| Apr 18 14:20 | Apr 26 11:20 | May 03 02:46 | May 10 01:36 |
| May 18 06:07 | May 25 19:42 | Jun 01 10:31 | Jun 08 17:22 |
| Jun 16 19:41 | Jun 24 01:31 | Jun 30 18:54 | Jul 08 10:21 |
| Jul 16 07:15 | Jul 23 06:02 | Jul 30 05:01 | Aug 07 03:44 |
| Aug 14 17:22 T | Aug 21 10:43 | Aug 28 17:39 t | Sep 05 20:47 |
| Sep 13 02:34 | Sep 19 17:10 | Sep 27 08:56 | Oct 05 12:53 |
| Oct 12 11:29 | Oct 19 02:50 | Oct 27 02:18 | Nov 04 03:27 |
| Nov 10 20:42 | Nov 17 16:38 | Nov 25 20:43 | Dec 03 15:55 |
| Dec 10 06:54 | Dec 17 10:29 | Dec 25 14:59 | - |
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: 2091 to 2100
The Americas
Below are links to sky event almanacs from 2091 to 2100 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 | 2091 | 2092 | 2093 | 2094 | 2095 | 2096 | 2097 | 2098 | 2099 | 2100 | |||||
| AST | 2091 | 2092 | 2093 | 2094 | 2095 | 2096 | 2097 | 2098 | 2099 | 2100 | |||||
| EST | 2091 | 2092 | 2093 | 2094 | 2095 | 2096 | 2097 | 2098 | 2099 | 2100 | |||||
| CST | 2091 | 2092 | 2093 | 2094 | 2095 | 2096 | 2097 | 2098 | 2099 | 2100 | |||||
| MST | 2091 | 2092 | 2093 | 2094 | 2095 | 2096 | 2097 | 2098 | 2099 | 2100 | |||||
| PST | 2091 | 2092 | 2093 | 2094 | 2095 | 2096 | 2097 | 2098 | 2099 | 2100 | |||||
| AKST | 2091 | 2092 | 2093 | 2094 | 2095 | 2096 | 2097 | 2098 | 2099 | 2100 | |||||
| HST | 2091 | 2092 | 2093 | 2094 | 2095 | 2096 | 2097 | 2098 | 2099 | 2100 | |||||
- 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)