2018Calendar of Astronomical Events
2018Phases of the Moon
Hawaiian Standard Time
The following table gives the date and time of the Moon's phases for the year. The times listed are for Hawaiian Standard Time(Greenwich Mean Time - 10 hours).If Daylight Saving Time is in effect, add one hour to the times listed.
| 2018 Phases of the Moon | |||
| Hawaiian Standard Time | |||
| New Moon | First Quarter | Full Moon | Last Quarter |
| - | - | Jan 1 16:24 | Jan 8 12:25 |
| Jan 16 16:17 | Jan 24 12:20 | Jan 31 03:27 t | Feb 7 05:54 |
| Feb 15 11:05 P | Feb 22 22:09 | Mar 1 14:51 | Mar 9 01:20 |
| Mar 17 03:12 | Mar 24 05:35 | Mar 31 02:37 | Apr 7 21:18 |
| Apr 15 15:57 | Apr 22 11:46 | Apr 29 14:58 | May 7 16:09 |
| May 15 01:48 | May 21 17:49 | May 29 04:20 | Jun 6 08:32 |
| Jun 13 09:43 | Jun 20 00:51 | Jun 27 18:53 | Jul 5 21:51 |
| Jul 12 16:48 P | Jul 19 09:52 | Jul 27 10:20 t | Aug 4 08:18 |
| Aug 10 23:58 P | Aug 17 21:49 | Aug 26 01:56 | Sep 2 16:37 |
| Sep 9 08:01 | Sep 16 13:15 | Sep 24 16:53 | Oct 1 23:45 |
| Oct 8 17:47 | Oct 16 08:02 | Oct 24 06:45 | Oct 31 06:40 |
| Nov 7 06:02 | Nov 15 04:54 | Nov 22 19:39 | Nov 29 14:19 |
| Dec 6 21:20 | Dec 15 01:49 | Dec 22 07:49 | Dec 28 23:34 |
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 table above. 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.
Phases of the Moon Photo Gallery is an image collection showing the Moon's phases over a complete synodic month.
2018Calendar of Astronomical Events
Hawaiian Standard Time
The following table gives the date and time of the important astronomical events for the year. The times listed are for Hawaiian Standard Time(Greenwich Mean Time - 10 hours).If Daylight Saving Time is in effect, add one hour to the times listed. A key to astronomical terms appears below the calendar.
| 2018Calendar of Astronomical Events | ||||||||
| Hawaiian Standard Time | ||||||||
| January - June | July - December | |||||||
Date HST Event (h:m)Jan 01 10 Mercury at Greatest Elong: 22.7°W 01 11:54 Moon at Perigee: 356566 km 01 16:24 FULL MOON 02 20 Earth at Perihelion: 0.98329 AU 03 09:50 Beehive 2.3°N of Moon 03 10 Quadrantid Meteor Shower 03 21:48 Moon at Ascending Node 04 21:24 Regulus 0.9°S of Moon 06 15 Mars 0.2°S of Jupiter 08 12:25 LAST QUARTER MOON 08 20 Venus at Superior Conjunction 10 19:59 Jupiter 4.3°S of Moon 11 00:03 Mars 4.6°S of Moon 12 22 Mercury 0.7°S of Saturn 14 16:10 Moon at Apogee: 406461 km 14 16:13 Saturn 2.6°S of Moon 14 21:24 Mercury 3.4°S of Moon 16 16:17 NEW MOON 18 04:28 Moon at Descending Node 23 07 Venus at Aphelion 24 12:20 FIRST QUARTER MOON 25 01 Mercury at Aphelion 27 00:09 Aldebaran 0.7°S of Moon 29 23:54 Moon at Perigee: 358995 km 30 21:19 Beehive 2.3°N of Moon 31 03:27 FULL MOON 31 03:30 Total Lunar Eclipse; mag=1.315 31 08:46 Moon at Ascending Node Feb 01 08:24 Regulus 0.9°S of Moon 07 05:54 LAST QUARTER MOON 07 09:47 Jupiter 4.3°S of Moon 08 19:12 Mars 4.4°S of Moon 11 04:16 Moon at Apogee: 405701 km 11 04:46 Saturn 2.5°S of Moon 11 06:40 Mars 5.0°N of Antares 14 11:11 Moon at Descending Node 15 10:51 Partial Solar Eclipse; mag=0.599 15 11:05 NEW MOON 17 02 Mercury at Superior Conjunction 22 22:09 FIRST QUARTER MOON 23 07:07 Aldebaran 0.7°S of Moon 27 04:48 Moon at Perigee: 363938 km 27 07:28 Beehive 2.3°N of Moon 27 19:03 Moon at Ascending Node 28 19:09 Regulus 0.9°S of MoonMar 01 14:51 FULL MOON 03 20 Mercury 1.1°N of Venus 04 04 Neptune in Conjunction with Sun 06 20:57 Jupiter 4.1°S of Moon 09 01:20 LAST QUARTER MOON 09 14:37 Mars 3.8°S of Moon 10 01 Mercury at Perihelion 10 16:37 Saturn 2.2°S of Moon 10 23:13 Moon at Apogee: 404682 km 13 17:47 Moon at Descending Node 15 05 Mercury at Greatest Elong: 18.4°E 17 03:12 NEW MOON 18 09:07 Venus 3.7°N of Moon 18 22 Mercury 3.8°N of Venus 20 06:15 Vernal Equinox 22 12:33 Aldebaran 0.9°S of Moon 24 05:35 FIRST QUARTER MOON 26 07:17 Moon at Perigee: 369104 km 26 14:52 Beehive 2.2°N of Moon 27 00:56 Moon at Ascending Node 28 03:38 Regulus 1.0°S of Moon 31 02:37 FULL MOON Apr 01 08 Mercury at Inferior Conjunction 02 09 Mars 1.3°S of Saturn 03 04:14 Jupiter 3.9°S of Moon 07 02:50 Saturn 1.9°S of Moon 07 08:15 Mars 3.1°S of Moon 07 19:32 Moon at Apogee: 404145 km 07 21:18 LAST QUARTER MOON 09 22:09 Moon at Descending Node 13 23:24 Mercury 3.9°N of Moon 15 15:57 NEW MOON 17 02 Saturn at Aphelion: 10.06564 AU 17 09:29 Venus 5.4°N of Moon 18 05 Uranus in Conjunction with Sun 18 18:45 Aldebaran 1.1°S of Moon 20 04:44 Moon at Perigee: 368713 km 22 08 Lyrid Meteor Shower 22 11:46 FIRST QUARTER MOON 22 20:17 Beehive 1.9°N of Moon 23 02:19 Moon at Ascending Node 24 06:47 Venus 3.4°S of Pleiades 24 09:39 Regulus 1.2°S of Moon 29 08 Mercury at Greatest Elong: 27.0°W 29 14:58 FULL MOON 30 07:16 Jupiter 3.8°S of MoonMay 02 03:29 Venus 6.3°N of Aldebaran 04 10:31 Saturn 1.7°S of Moon 04 21 Eta-Aquarid Meteor Shower 05 14:35 Moon at Apogee: 404458 km 05 21:24 Mars 2.7°S of Moon 07 00:23 Moon at Descending Node 07 16:09 LAST QUARTER MOON 08 14 Jupiter at Opposition 13 07:21 Mercury 2.4°N of Moon 15 01:48 NEW MOON 15 15 Venus at Perihelion 17 08:11 Venus 4.8°N of Moon 17 11:06 Moon at Perigee: 363777 km 20 01:57 Beehive 1.7°N of Moon 20 03:13 Moon at Ascending Node 21 14:53 Regulus 1.4°S of Moon 21 17:49 FIRST QUARTER MOON 27 07:39 Jupiter 4.0°S of Moon 29 04:20 FULL MOON 31 15:20 Saturn 1.6°S of MoonJun 02 06:34 Moon at Apogee: 405316 km 03 01:58 Mars 3.2°S of Moon 03 02:39 Moon at Descending Node 05 16 Mercury at Superior Conjunction 06 00 Mercury at Perihelion 06 08:32 LAST QUARTER MOON 07 17:37 Venus 4.6°S of Pollux 13 09:43 NEW MOON 14 13:55 Moon at Perigee: 359507 km 16 03:13 Venus 2.3°N of Moon 16 07:50 Moon at Ascending Node 16 09:38 Beehive 1.5°N of Moon 17 21:25 Regulus 1.7°S of Moon 19 16:21 Venus 0.4°N of Beehive 20 00:51 FIRST QUARTER MOON 21 00:07 Summer Solstice 23 08:47 Jupiter 4.2°S of Moon 24 11:37 Mercury 4.7°S of Pollux 27 02 Saturn at Opposition 27 17:59 Saturn 1.8°S of Moon 27 18:53 FULL MOON 29 16:43 Moon at Apogee: 406061 km 30 06:44 Moon at Descending Node 30 15:43 Mars 4.8°S of Moon | Date HST Event (h:m)Jul 03 19:39 Mercury 0.6°S of Beehive 05 21:51 LAST QUARTER MOON 06 07 Earth at Aphelion: 1.01670 AU 09 13:34 Venus 0.9°N of Regulus 09 23:30 Aldebaran 1.1°S of Moon 11 19 Mercury at Greatest Elong: 26.4°E 12 16:48 NEW MOON 12 17:01 Partial Solar Eclipse; mag=0.337 12 22:28 Moon at Perigee: 357432 km 13 16:50 Moon at Ascending Node 14 12:04 Mercury 2.2°S of Moon 15 06:14 Regulus 1.7°S of Moon 15 17:31 Venus 1.6°S of Moon 19 09:52 FIRST QUARTER MOON 20 00 Mercury at Aphelion 20 13:57 Jupiter 4.4°S of Moon 24 06:49 Mercury 1.2°S of Regulus 24 20:10 Saturn 2.0°S of Moon 26 20 Mars at Opposition 26 19:44 Moon at Apogee: 406223 km 27 10:20 FULL MOON 27 10:22 Total Lunar Eclipse; mag=1.609 27 12:40 Moon at Descending Node 27 23 Delta-Aquarid Meteor ShowerAug 04 08:18 LAST QUARTER MOON 06 08:35 Aldebaran 1.1°S of Moon 08 16 Mercury at Inferior Conjunction 10 03:40 Moon at Ascending Node 10 08:05 Moon at Perigee: 358083 km 10 23:46 Partial Solar Eclipse; mag=0.737 10 23:58 NEW MOON 12 15 Perseid Meteor Shower 14 03:35 Venus 6.3°S of Moon 17 00:38 Jupiter 4.5°S of Moon 17 06 Venus at Greatest Elong: 45.9°E 17 21:49 FIRST QUARTER MOON 20 16:09 Mercury 4.8°S of Beehive 20 23:55 Saturn 2.1°S of Moon 23 01:23 Moon at Apogee: 405744 km 23 18:51 Moon at Descending Node 26 01:56 FULL MOON 26 10 Mercury at Greatest Elong: 18.3°W 31 18:45 Venus 1.0°S of SpicaSep 02 00 Mercury at Perihelion 02 15:34 Aldebaran 1.2°S of Moon 02 16:37 LAST QUARTER MOON 06 12:42 Moon at Ascending Node 06 16:13 Beehive 1.4°N of Moon 07 07 Neptune at Opposition 07 15:21 Moon at Perigee: 361355 km 09 08:01 NEW MOON 13 16:21 Jupiter 4.4°S of Moon 16 03 Mars at Perihelion: 1.38144 AU 16 13:15 FIRST QUARTER MOON 17 06:46 Saturn 2.1°S of Moon 19 14:54 Moon at Apogee: 404875 km 19 20:38 Mars 4.8°S of Moon 19 23:30 Moon at Descending Node 20 16 Mercury at Superior Conjunction 22 15:54 Autumnal Equinox 24 16:52 FULL MOON 29 21:06 Aldebaran 1.4°S of MoonOct 01 23:45 LAST QUARTER MOON 03 17:10 Moon at Ascending Node 03 23:51 Beehive 1.3°N of Moon 05 11:58 Regulus 1.8°S of Moon 05 12:29 Moon at Perigee: 366396 km 08 17:47 NEW MOON 11 11:21 Jupiter 4.1°S of Moon 14 17:01 Saturn 1.8°S of Moon 15 17 Mercury 6.2°N of Venus 16 08:02 FIRST QUARTER MOON 17 02:03 Moon at Descending Node 17 09:16 Moon at Apogee: 404227 km 18 03:01 Mars 1.9°S of Moon 21 07 Orionid Meteor Shower 23 15 Uranus at Opposition 24 06:45 FULL MOON 26 04 Venus at Inferior Conjunction 27 03:04 Aldebaran 1.6°S of Moon 28 20 Mercury 3.1°S of Jupiter 30 17:46 Moon at Ascending Node 31 05:24 Beehive 1.0°N of Moon 31 06:40 LAST QUARTER MOON 31 10:05 Moon at Perigee: 370201 kmNov 01 18:16 Regulus 2.1°S of Moon 05 08 S Taurid Meteor Shower 06 05 Mercury at Greatest Elong: 23.3°E 07 06:02 NEW MOON 08 18:58 Mercury 1.8°N of Antares 11 05:46 Saturn 1.4°S of Moon 12 07 N Taurid Meteor Shower 13 04:04 Moon at Descending Node 14 05:57 Moon at Apogee: 404341 km 14 13:14 Venus 0.2°S of Spica 15 04:54 FIRST QUARTER MOON 15 18:16 Mars 1.0°N of Moon: Occn. 17 13 Leonid Meteor Shower 22 19:39 FULL MOON 23 11:11 Aldebaran 1.7°S of Moon 25 20 Jupiter in Conjunction with Sun 26 02:10 Moon at Perigee: 366623 km 26 19:18 Moon at Ascending Node 26 23 Mercury at Inferior Conjunction 27 10:57 Beehive 0.8°N of Moon 28 23 Mercury at Perihelion 28 23:27 Regulus 2.3°S of Moon 29 14:19 LAST QUARTER MOON Dec 03 08:42 Venus 3.6°S of Moon 05 11:06 Mercury 1.9°S of Moon 06 21:20 NEW MOON 08 19:30 Saturn 1.1°S of Moon: Occn. 10 07:57 Moon at Descending Node 12 02:25 Moon at Apogee: 405177 km 14 02 Geminid Meteor Shower 14 13:21 Mars 3.6°N of Moon 15 01 Mercury at Greatest Elong: 21.3°W 15 01:49 FIRST QUARTER MOON 20 21:31 Aldebaran 1.7°S of Moon 21 10 Mercury 0.8°N of Jupiter 21 12:22 Winter Solstice 21 22:05 Mercury 5.8°N of Antares 22 05:03 Jupiter 5.1°N of Antares 22 07:49 FULL MOON 22 11 Ursid Meteor Shower 23 23:52 Moon at Perigee: 361060 km 24 01:54 Moon at Ascending Node 24 18:52 Beehive 0.6°N of Moon 26 06:06 Regulus 2.5°S of Moon 26 08 Venus at Perihelion 28 23:34 LAST QUARTER MOON | |||||||
Terms Used in Astronomical Events Calendar
- 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
- Beehive - bright star cluster in the constellation Cancer
Calendars of Astronomical Events: 2011 to 2020
The Americas
Below are links to calendars of astronomical events from 2011 to 2020 for seven time zones in the Americas.
Choose a time zone and click on a year to get a calendar of astronomical events for that year.
| Calendars of Astronomical Events - The Americas | |||||||||||||||
| 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 | |||||
- AST = Atlantic Standard Time (= GMT - 4 hours)
- EST = Eastern Standard Time (= GMT - 5 hours)
- CST = Central Standard Time (= GMT - 6 hours)
- MST = Mountain Standard Time (= GMT - 7 hours)
- PST = Pacific Standard Time (= GMT - 8 hours)
- AKST = Alaskan Standard Time (= GMT - 9 hours)
- HST = Hawaiian Standard Time (= GMT - 10 hours)
(where GMT = Greenwich Mean 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 Greenwich Mean Time to help in identification.
For other years and other time zones, visit: Calendars of Astronomical Events.