2091 Sky Event Almanac
Atlantic Standard Time
The following table gives the date and time of the important astronomical events for the year. The times listed are for Atlantic Standard Time (Coordinated Universal Time − 4 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 | ||||||||
| Atlantic Standard Time | ||||||||
| January - June | July - December | |||||||
Date AST Event
(h:m)
Jan 02 19:45 Aldebaran 0.4°S of Moon
03 13:26 Saturn 3.6°N of Moon
04 10 Quadrantid Meteor Shower
04 16 Earth at Perihelion: 0.98327 AU
05 11:50 FULL MOON
08 16:26 Regulus 1.7°N of Moon
09 13:42 Moon at Ascending Node
09 18:29 Moon at Perigee: 368696 km
10 10:32 Mars 2.2°N of Moon
10 16 Mercury 0.7°S of Jupiter
12 08:34 LAST QUARTER MOON
15 21:06 Venus 2.5°S of Moon
17 00 Mercury at Aphelion
17 19:17 Jupiter 4.5°S of Moon
19 12:31 NEW MOON
22 22:23 Moon at Descending Node
25 10:57 Moon at Apogee: 404798 km
27 15:23 FIRST QUARTER MOON
30 05:12 Aldebaran 0.2°S of Moon
30 20:22 Saturn 3.8°N of Moon
Feb 04 00:46 FULL MOON
05 01:08 Regulus 1.6°N of Moon
05 14 Mercury at Superior Conjunction
05 19:51 Moon at Ascending Node
06 05:12 Moon at Perigee: 363106 km
06 19:07 Mars 2.8°N of Moon
10 17:11 LAST QUARTER MOON
10 20 Venus 1.2°N of Jupiter
14 12 Neptune at Opposition
14 12:33 Jupiter 4.4°S of Moon
14 17 Mars at Aphelion: 1.66607 AU
14 20:11 Venus 3.2°S of Moon
18 05:38 NEW MOON
18 05:52 Partial Solar Eclipse; mag=0.656
19 04:55 Moon at Descending Node
22 04:37 Moon at Apogee: 405740 km
26 10:47 FIRST QUARTER MOON
26 13:48 Aldebaran 0.2°S of Moon
27 04:57 Saturn 4.0°N of Moon
Mar 02 00 Mercury at Perihelion
04 11:57 Regulus 1.6°N of Moon
04 19 Mercury at Greatest Elong: 18.2°E
05 06:18 Moon at Ascending Node
05 11:55 Total Lunar Eclipse; mag=1.283
05 11:59 FULL MOON
05 16:49 Mars 3.8°N of Moon
06 01 Uranus in Conjunction with Sun
06 12:02 Moon at Perigee: 358572 km
06 15 Mars at Opposition
12 03:02 LAST QUARTER MOON
14 03:20 Jupiter 4.2°S of Moon
17 00:40 Venus 2.3°S of Moon
18 11:29 Moon at Descending Node
19 23:45 NEW MOON
20 04:40 Vernal Equinox
21 03 Mercury at Inferior Conjunction
21 13:48 Moon at Apogee: 406436 km
25 20:49 Aldebaran 0.2°S of Moon
26 14:34 Saturn 4.0°N of Moon
28 02:31 FIRST QUARTER MOON
31 22:47 Regulus 1.6°N of Moon
Apr 01 13:39 Mars 3.8°N of Moon
01 17:02 Moon at Ascending Node
03 21:31 FULL MOON
03 23:26 Moon at Perigee: 356783 km
09 22 Venus at Aphelion
10 14:45 LAST QUARTER MOON
10 15:54 Jupiter 4.0°S of Moon
13 06 Mercury 0.3°S of Venus
14 15:56 Moon at Descending Node
16 05:05 Mercury 0.5°S of Moon: Occn.
16 06:58 Venus 0.2°N of Moon: Occn.
17 15:25 Moon at Apogee: 406548 km
18 00 Mercury at Greatest Elong: 27.6°W
18 17:20 NEW MOON
22 02:43 Aldebaran 0.4°S of Moon
23 01:09 Saturn 3.9°N of Moon
23 07 Lyrid Meteor Shower
26 14:20 FIRST QUARTER MOON
28 07:39 Regulus 1.4°N of Moon
28 21:08 Mars 2.5°N of Moon
29 00:03 Moon at Ascending Node
May 02 10:03 Moon at Perigee: 358058 km
03 05:46 FULL MOON
05 04 Mercury 1.0°S of Venus
05 20 Eta-Aquarid Meteor Shower
08 02:13 Jupiter 3.7°S of Moon
10 04:36 LAST QUARTER MOON
11 18:02 Moon at Descending Node
14 23:48 Moon at Apogee: 405973 km
16 14:31 Venus 3.0°N of Moon
18 09:07 NEW MOON
20 12:59 Saturn 3.8°N of Moon
25 14:05 Regulus 1.2°N of Moon
25 22:42 FIRST QUARTER MOON
26 02:26 Moon at Ascending Node
26 15:12 Mars 0.6°N of Moon: Occn.
27 00 Mercury at Superior Conjunction
28 23 Mercury at Perihelion
30 15:30 Moon at Perigee: 361863 km
Jun 01 13:31 FULL MOON
04 09:47 Jupiter 3.7°S of Moon
07 19:52 Moon at Descending Node
08 20:22 LAST QUARTER MOON
11 15:05 Moon at Apogee: 404966 km
15 15:19 Aldebaran 0.4°S of Moon
16 22:41 NEW MOON
19 19 Saturn in Conjunction with Sun
20 21:17 Summer Solstice
21 19:19 Regulus 0.9°N of Moon
22 03:09 Moon at Ascending Node
23 16:03 Mars 1.4°S of Moon
24 04:31 FIRST QUARTER MOON
27 07:38 Moon at Perigee: 366857 km
30 07 Mercury at Greatest Elong: 25.6°E
30 21:54 FULL MOON
|
Date AST Event
(h:m)
Jul 01 14:18 Jupiter 3.8°S of Moon
04 23:55 Moon at Descending Node
07 09 Earth at Aphelion: 1.01668 AU
08 13:21 LAST QUARTER MOON
09 03 Jupiter at Opposition
09 09:01 Moon at Apogee: 404243 km
11 23 Mercury at Aphelion
12 23:10 Aldebaran 0.3°S of Moon
14 16:54 Saturn 3.6°N of Moon
16 10:15 NEW MOON
17 15:32 Mercury 1.9°S of Moon
19 01:18 Regulus 0.8°N of Moon
19 06:19 Moon at Ascending Node
21 21:37 Mars 3.4°S of Moon
23 00:02 Moon at Perigee: 369671 km
23 09:02 FIRST QUARTER MOON
24 22 Venus at Superior Conjunction
28 00 Mercury at Inferior Conjunction
28 16:39 Jupiter 4.1°S of Moon
28 22 Delta-Aquarid Meteor Shower
30 08:01 FULL MOON
31 07 Venus at Perihelion
Aug 01 06:39 Moon at Descending Node
06 03:42 Moon at Apogee: 404324 km
07 06:44 LAST QUARTER MOON
09 07:37 Aldebaran 0.2°S of Moon
11 07:54 Saturn 3.5°N of Moon
12 00:31 Mars 1.6°N of Spica
13 10:27 Mercury 0.9°N of Moon: Occn.
13 14 Perseid Meteor Shower
14 20:22 NEW MOON
14 20:32 Total Solar Eclipse; mag=1.022
15 13:37 Moon at Ascending Node
15 21 Mercury at Greatest Elong: 18.8°W
18 02:08 Moon at Perigee: 366147 km
19 20 Neptune in Conjunction with Sun
21 13:43 FIRST QUARTER MOON
24 19:04 Jupiter 4.3°S of Moon
24 23 Mercury at Perihelion
28 14:21 Moon at Descending Node
28 20:35 Total Lunar Eclipse; mag=1.235
28 20:39 FULL MOON
Sep 02 21:49 Moon at Apogee: 405142 km
05 15:49 Aldebaran 0.2°S of Moon
05 23:47 LAST QUARTER MOON
07 21:47 Saturn 3.4°N of Moon
09 22 Mercury at Superior Conjunction
10 04 Uranus at Opposition
11 19:11 Regulus 0.8°N of Moon
11 23:31 Moon at Ascending Node
13 05:34 NEW MOON
14 21:40 Moon at Perigee: 361131 km
19 20:10 FIRST QUARTER MOON
21 00:23 Jupiter 4.3°S of Moon
22 13:49 Autumnal Equinox
24 20:29 Moon at Descending Node
27 11:56 FULL MOON
28 19:12 Venus 2.6°N of Spica
30 12:41 Moon at Apogee: 406084 km
Oct 01 02:26 Mercury 1.5°N of Spica
02 23:01 Aldebaran 0.3°S of Moon
05 08:41 Saturn 3.2°N of Moon
05 15:53 LAST QUARTER MOON
09 05:33 Regulus 0.7°N of Moon
09 08:41 Moon at Ascending Node
09 19 Mercury 1.9°S of Venus
12 14:29 NEW MOON
13 05:20 Moon at Perigee: 357592 km
14 00:26 Venus 4.9°S of Moon
18 10:38 Jupiter 4.0°S of Moon
19 05:50 FIRST QUARTER MOON
19 09:36 Mars 3.5°N of Antares
21 23:27 Moon at Descending Node
22 06 Orionid Meteor Shower
23 07 Saturn at Perihelion: 9.01429 AU
26 05 Mercury at Greatest Elong: 24.2°E
27 05:18 FULL MOON
27 18:34 Moon at Apogee: 406488 km
30 05:14 Aldebaran 0.5°S of Moon
Nov 01 15:26 Saturn 3.0°N of Moon
04 06:27 LAST QUARTER MOON
04 23:17 Venus 3.7°N of Antares
05 13:49 Moon at Ascending Node
05 14:32 Regulus 0.5°N of Moon
06 07 S Taurid Meteor Shower
10 17:06 Moon at Perigee: 356866 km
10 23:42 NEW MOON
13 06 N Taurid Meteor Shower
15 02:12 Jupiter 3.5°S of Moon
17 04 Mercury at Inferior Conjunction
17 19:38 FIRST QUARTER MOON
18 00:23 Moon at Descending Node
18 12 Leonid Meteor Shower
20 15 Venus at Aphelion
20 22 Mercury at Perihelion
23 19:32 Moon at Apogee: 406275 km
25 23:43 FULL MOON
26 11:14 Aldebaran 0.6°S of Moon
28 18:42 Saturn 2.8°N of Moon
30 02 Venus 0.6°S of Mars
Dec 02 14:51 Moon at Ascending Node
02 21:08 Regulus 0.2°N of Moon
03 18:55 LAST QUARTER MOON
04 07 Mercury at Greatest Elong: 20.4°W
08 23:11 Mercury 3.2°S of Moon
09 04:19 Moon at Perigee: 359394 km
10 09:54 NEW MOON
11 02 Venus 1.6°S of Jupiter
12 14:52 Mars 4.1°S of Moon
12 21:50 Jupiter 3.0°S of Moon
13 01:51 Venus 4.4°S of Moon
15 02 Geminid Meteor Shower
15 03:02 Moon at Descending Node
17 13:29 FIRST QUARTER MOON
20 00 Mars 0.8°S of Jupiter
21 06:59 Moon at Apogee: 405544 km
21 11:37 Winter Solstice
23 10 Ursid Meteor Shower
23 17:55 Aldebaran 0.5°S of Moon
25 17:59 FULL MOON
25 20:53 Saturn 2.9°N of Moon
27 12 Saturn at Opposition
29 15:59 Moon at Ascending Node
30 02:26 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
Atlantic Standard Time
The following table gives the date and time of the Moon's phases for the year. The times listed are for Atlantic Standard Time (Coordinated Universal Time − 4 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 | |||
| Atlantic Standard Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| - | - | Jan 05 11:50 | Jan 12 08:34 |
| Jan 19 12:31 | Jan 27 15:23 | Feb 04 00:46 | Feb 10 17:11 |
| Feb 18 05:38 P | Feb 26 10:47 | Mar 05 11:59 t | Mar 12 03:02 |
| Mar 19 23:45 | Mar 28 02:31 | Apr 03 21:31 | Apr 10 14:45 |
| Apr 18 17:20 | Apr 26 14:20 | May 03 05:46 | May 10 04:36 |
| May 18 09:07 | May 25 22:42 | Jun 01 13:31 | Jun 08 20:22 |
| Jun 16 22:41 | Jun 24 04:31 | Jun 30 21:54 | Jul 08 13:21 |
| Jul 16 10:15 | Jul 23 09:02 | Jul 30 08:01 | Aug 07 06:44 |
| Aug 14 20:22 T | Aug 21 13:43 | Aug 28 20:39 t | Sep 05 23:47 |
| Sep 13 05:34 | Sep 19 20:10 | Sep 27 11:56 | Oct 05 15:53 |
| Oct 12 14:29 | Oct 19 05:50 | Oct 27 05:18 | Nov 04 06:27 |
| Nov 10 23:42 | Nov 17 19:38 | Nov 25 23:43 | Dec 03 18:55 |
| Dec 10 09:54 | Dec 17 13:29 | Dec 25 17:59 | - |
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
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Astronomy Tools (Astronomy Tools)