2018 Sky Event Almanac
Argentina Time
The following table gives the date and time of the important astronomical events for the year. The times listed are for Argentina Time (Coordinated Universal Time − 3 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.
| 2018 Sky Event Almanac | ||||||||
| Argentina Time | ||||||||
| January - June | July - December | |||||||
Date ART Event
(h:m)
Jan 01 17 Mercury at Greatest Elong: 22.7°W
01 18:54 Moon at Perigee: 356566 km
01 23:24 FULL MOON
03 03 Earth at Perihelion: 0.98329 AU
03 17 Quadrantid Meteor Shower
04 04:48 Moon at Ascending Node
05 04:24 Regulus 0.9°S of Moon
06 22 Mars 0.2°S of Jupiter
08 19:25 LAST QUARTER MOON
09 03 Venus at Superior Conjunction
11 02:59 Jupiter 4.3°S of Moon
13 05 Mercury 0.7°S of Saturn
14 23:10 Moon at Apogee: 406461 km
14 23:13 Saturn 2.6°S of Moon
15 04:24 Mercury 3.4°S of Moon
16 23:17 NEW MOON
18 11:28 Moon at Descending Node
23 14 Venus at Aphelion
24 19:20 FIRST QUARTER MOON
25 08 Mercury at Aphelion
27 07:09 Aldebaran 0.7°S of Moon
30 06:54 Moon at Perigee: 358995 km
31 10:27 FULL MOON
31 10:30 Total Lunar Eclipse; mag=1.315
31 15:46 Moon at Ascending Node
Feb 01 15:24 Regulus 0.9°S of Moon
07 12:54 LAST QUARTER MOON
07 16:47 Jupiter 4.3°S of Moon
09 02:12 Mars 4.4°S of Moon
11 11:16 Moon at Apogee: 405701 km
11 11:46 Saturn 2.5°S of Moon
14 18:11 Moon at Descending Node
15 17:51 Partial Solar Eclipse; mag=0.599
15 18:05 NEW MOON
17 09 Mercury at Superior Conjunction
23 05:09 FIRST QUARTER MOON
23 14:07 Aldebaran 0.7°S of Moon
27 11:48 Moon at Perigee: 363938 km
28 02:03 Moon at Ascending Node
Mar 01 02:09 Regulus 0.9°S of Moon
01 21:51 FULL MOON
04 11 Neptune in Conjunction with Sun
07 03:57 Jupiter 4.1°S of Moon
09 08:20 LAST QUARTER MOON
09 21:37 Mars 3.8°S of Moon
10 08 Mercury at Perihelion
10 23:37 Saturn 2.2°S of Moon
11 06:13 Moon at Apogee: 404682 km
14 00:47 Moon at Descending Node
15 12 Mercury at Greatest Elong: 18.4°E
17 10:12 NEW MOON
18 16:07 Venus 3.7°N of Moon
19 05 Mercury 3.8°N of Venus
20 13:15 Vernal Equinox
22 19:33 Aldebaran 0.9°S of Moon
24 12:35 FIRST QUARTER MOON
26 14:17 Moon at Perigee: 369104 km
27 07:56 Moon at Ascending Node
28 10:38 Regulus 1.0°S of Moon
31 09:37 FULL MOON
Apr 01 15 Mercury at Inferior Conjunction
02 16 Mars 1.3°S of Saturn
03 11:14 Jupiter 3.9°S of Moon
07 09:50 Saturn 1.9°S of Moon
07 15:15 Mars 3.1°S of Moon
08 02:32 Moon at Apogee: 404145 km
08 04:18 LAST QUARTER MOON
10 05:09 Moon at Descending Node
14 06:24 Mercury 3.9°N of Moon
15 22:57 NEW MOON
17 09 Saturn at Aphelion: 10.06564 AU
18 12 Uranus in Conjunction with Sun
19 01:45 Aldebaran 1.1°S of Moon
20 11:44 Moon at Perigee: 368713 km
22 15 Lyrid Meteor Shower
22 18:46 FIRST QUARTER MOON
23 09:19 Moon at Ascending Node
24 13:47 Venus 3.4°S of Pleiades
24 16:39 Regulus 1.2°S of Moon
29 15 Mercury at Greatest Elong: 27.0°W
29 21:58 FULL MOON
30 14:16 Jupiter 3.8°S of Moon
May 04 17:31 Saturn 1.7°S of Moon
05 04 Eta-Aquarid Meteor Shower
05 21:35 Moon at Apogee: 404458 km
06 04:24 Mars 2.7°S of Moon
07 07:23 Moon at Descending Node
07 23:09 LAST QUARTER MOON
08 21 Jupiter at Opposition
13 14:21 Mercury 2.4°N of Moon
15 08:48 NEW MOON
15 22 Venus at Perihelion
16 10:04 Aldebaran 1.2°S of Moon
17 15:11 Venus 4.8°N of Moon
17 18:06 Moon at Perigee: 363777 km
20 10:13 Moon at Ascending Node
21 21:53 Regulus 1.4°S of Moon
22 00:49 FIRST QUARTER MOON
27 14:39 Jupiter 4.0°S of Moon
29 11:20 FULL MOON
31 22:20 Saturn 1.6°S of Moon
Jun 02 13:34 Moon at Apogee: 405316 km
03 08:58 Mars 3.2°S of Moon
03 09:39 Moon at Descending Node
05 23 Mercury at Superior Conjunction
06 07 Mercury at Perihelion
06 15:32 LAST QUARTER MOON
08 00:37 Venus 4.6°S of Pollux
13 16:43 NEW MOON
14 20:55 Moon at Perigee: 359507 km
16 10:13 Venus 2.3°N of Moon
16 14:50 Moon at Ascending Node
18 04:25 Regulus 1.7°S of Moon
20 07:51 FIRST QUARTER MOON
21 07:07 Summer Solstice
23 15:47 Jupiter 4.2°S of Moon
24 18:37 Mercury 4.7°S of Pollux
27 09 Saturn at Opposition
28 00:59 Saturn 1.8°S of Moon
28 01:53 FULL MOON
29 23:43 Moon at Apogee: 406061 km
30 13:44 Moon at Descending Node
|
Date ART Event
(h:m)
Jul 06 04:51 LAST QUARTER MOON
06 14 Earth at Aphelion: 1.01670 AU
09 20:34 Venus 0.9°N of Regulus
10 06:30 Aldebaran 1.1°S of Moon
12 02 Mercury at Greatest Elong: 26.4°E
12 23:48 NEW MOON
13 00:01 Partial Solar Eclipse; mag=0.337
13 05:28 Moon at Perigee: 357432 km
13 23:50 Moon at Ascending Node
14 19:04 Mercury 2.2°S of Moon
15 13:14 Regulus 1.7°S of Moon
16 00:31 Venus 1.6°S of Moon
19 16:52 FIRST QUARTER MOON
20 07 Mercury at Aphelion
20 20:57 Jupiter 4.4°S of Moon
25 03:10 Saturn 2.0°S of Moon
27 03 Mars at Opposition
27 02:44 Moon at Apogee: 406223 km
27 17:20 FULL MOON
27 17:22 Total Lunar Eclipse; mag=1.609
27 19:40 Moon at Descending Node
28 06 Delta-Aquarid Meteor Shower
Aug 04 15:18 LAST QUARTER MOON
06 15:35 Aldebaran 1.1°S of Moon
08 23 Mercury at Inferior Conjunction
10 10:40 Moon at Ascending Node
10 15:05 Moon at Perigee: 358083 km
11 06:46 Partial Solar Eclipse; mag=0.737
11 06:58 NEW MOON
12 22 Perseid Meteor Shower
17 07:38 Jupiter 4.5°S of Moon
17 13 Venus at Greatest Elong: 45.9°E
18 04:49 FIRST QUARTER MOON
21 06:55 Saturn 2.1°S of Moon
23 08:23 Moon at Apogee: 405744 km
24 01:51 Moon at Descending Node
26 08:56 FULL MOON
26 17 Mercury at Greatest Elong: 18.3°W
Sep 01 01:45 Venus 1.0°S of Spica
02 07 Mercury at Perihelion
02 22:34 Aldebaran 1.2°S of Moon
02 23:37 LAST QUARTER MOON
06 19:42 Moon at Ascending Node
07 14 Neptune at Opposition
07 22:21 Moon at Perigee: 361355 km
08 10:13 Regulus 1.7°S of Moon
09 15:01 NEW MOON
13 23:21 Jupiter 4.4°S of Moon
16 10 Mars at Perihelion: 1.38144 AU
16 20:15 FIRST QUARTER MOON
17 13:46 Saturn 2.1°S of Moon
19 21:54 Moon at Apogee: 404875 km
20 06:30 Moon at Descending Node
20 23 Mercury at Superior Conjunction
22 22:54 Autumnal Equinox
24 23:52 FULL MOON
30 04:06 Aldebaran 1.4°S of Moon
Oct 02 06:45 LAST QUARTER MOON
04 00:10 Moon at Ascending Node
05 18:58 Regulus 1.8°S of Moon
05 19:29 Moon at Perigee: 366396 km
09 00:47 NEW MOON
11 18:21 Jupiter 4.1°S of Moon
15 00:01 Saturn 1.8°S of Moon
16 15:02 FIRST QUARTER MOON
17 09:03 Moon at Descending Node
17 16:16 Moon at Apogee: 404227 km
18 10:01 Mars 1.9°S of Moon
21 14 Orionid Meteor Shower
23 22 Uranus at Opposition
24 13:45 FULL MOON
26 11 Venus at Inferior Conjunction
27 10:04 Aldebaran 1.6°S of Moon
29 03 Mercury 3.1°S of Jupiter
31 00:46 Moon at Ascending Node
31 13:40 LAST QUARTER MOON
31 17:05 Moon at Perigee: 370201 km
Nov 02 01:16 Regulus 2.1°S of Moon
05 15 S Taurid Meteor Shower
06 12 Mercury at Greatest Elong: 23.3°E
07 13:02 NEW MOON
09 01:58 Mercury 1.8°N of Antares
11 12:46 Saturn 1.4°S of Moon
12 14 N Taurid Meteor Shower
13 11:04 Moon at Descending Node
14 12:57 Moon at Apogee: 404341 km
14 20:14 Venus 0.2°S of Spica
15 11:54 FIRST QUARTER MOON
16 01:16 Mars 1.0°N of Moon: Occn.
17 20 Leonid Meteor Shower
23 02:39 FULL MOON
23 18:11 Aldebaran 1.7°S of Moon
26 03 Jupiter in Conjunction with Sun
26 09:10 Moon at Perigee: 366623 km
27 02:18 Moon at Ascending Node
27 06 Mercury at Inferior Conjunction
29 06 Mercury at Perihelion
29 06:27 Regulus 2.3°S of Moon
29 21:19 LAST QUARTER MOON
Dec 03 15:42 Venus 3.6°S of Moon
05 18:06 Mercury 1.9°S of Moon
07 04:20 NEW MOON
09 02:30 Saturn 1.1°S of Moon: Occn.
10 14:57 Moon at Descending Node
12 09:25 Moon at Apogee: 405177 km
14 09 Geminid Meteor Shower
14 20:21 Mars 3.6°N of Moon
15 08 Mercury at Greatest Elong: 21.3°W
15 08:49 FIRST QUARTER MOON
21 04:31 Aldebaran 1.7°S of Moon
21 17 Mercury 0.8°N of Jupiter
21 19:22 Winter Solstice
22 14:49 FULL MOON
22 18 Ursid Meteor Shower
24 06:52 Moon at Perigee: 361060 km
24 08:54 Moon at Ascending Node
26 13:06 Regulus 2.5°S of Moon
26 15 Venus at Perihelion
29 06:34 LAST QUARTER 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
2018 Phases of the Moon
Argentina Time
The following table gives the date and time of the Moon's phases for the year. The times listed are for Argentina Time (Coordinated Universal Time − 3 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.
| 2018 Phases of the Moon | |||
| Argentina Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| - | - | Jan 01 23:24 | Jan 08 19:25 |
| Jan 16 23:17 | Jan 24 19:20 | Jan 31 10:27 t | Feb 07 12:54 |
| Feb 15 18:05 P | Feb 23 05:09 | Mar 01 21:51 | Mar 09 08:20 |
| Mar 17 10:12 | Mar 24 12:35 | Mar 31 09:37 | Apr 08 04:18 |
| Apr 15 22:57 | Apr 22 18:46 | Apr 29 21:58 | May 07 23:09 |
| May 15 08:48 | May 22 00:49 | May 29 11:20 | Jun 06 15:32 |
| Jun 13 16:43 | Jun 20 07:51 | Jun 28 01:53 | Jul 06 04:51 |
| Jul 12 23:48 P | Jul 19 16:52 | Jul 27 17:20 t | Aug 04 15:18 |
| Aug 11 06:58 P | Aug 18 04:49 | Aug 26 08:56 | Sep 02 23:37 |
| Sep 09 15:01 | Sep 16 20:15 | Sep 24 23:53 | Oct 02 06:45 |
| Oct 09 00:47 | Oct 16 15:02 | Oct 24 13:45 | Oct 31 13:40 |
| Nov 07 13:02 | Nov 15 11:54 | Nov 23 02:39 | Nov 29 21:19 |
| Dec 07 04:20 | Dec 15 08:49 | Dec 22 14:49 | Dec 29 06:34 |
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)