This astronomy calendar of celestial events contains dates for notable celestial events including moon phases, meteor showers, eclipses, oppositions, conjunctions, and other interesting events.
Check out the archives to view previous years celesital events.
Celestial Events
January 2024
| Day | Time | Event |
|---|---|---|
| 1 | 5:28 am | Moon at apogee (farthest from earth) |
| 2 | 2:39 pm | Perihelion (earth closest to sun) |
| 3 | 5:30 pm | Perihelion (earth closest to sun) |
| 4 | 1 – 6:30 am | Quadrantid Meteor Shower peak |
| 8 | 4:45 – 6:45 am | Conjunction of Moon-Venus (6º apart) |
| 10 | 7 am | Mercury at highest altitude (20º) in morning sky |
| 11 | 1:57 am | New Moon |
| 11 | 4:22 am | Perigean Spring (King) Tides (2.51 ft) — Honolulu Harbor |
| 13 | 12:35 am | Moon at perigee (closest to earth |
| 13 | 6:30 – 8:45 pm | Conjunction of Moon-Saturn (4º apart) |
| 16 | 7:10:16 am | Latest sunrise ever occurs in Honolulu |
| 17 | 5:52 pm | First Quarter (Waxing Half) Moon |
| 18 | 6:30 – 1:15 pm | Conjunction of Moon-Jupiter (6º apart) |
| 25 | 7:54 am | Full Moon |
| 27 | 6 – 7:45 am | Conjunction of Mercury-Mars (0.25º apart) |
| 28 | 10:24 pm | Moon at apogee (farthest from earth) |
February 2024
| Day | Time | Event |
|---|---|---|
| 2 | 1:18 pm | Last Quarter (Waning Half) Moon |
| 9 | 12:59 pm | New Moon Super New Moon: largest new moon (occurs nearest perigee) |
| 10 | 8:49 am | Moon at perigee (closest to earth) |
| 11 | 12:45:37 pm | Latest "noon"— latest time sun crosses the meridian in Honolulu (latest apparent noon) |
| 14 | 6:45 – 11:30 pm | Conjunction of Moon-Jupiter (3.2º apart) |
| 16 | 5 am | First Quarter (Waxing Half) Moon |
| 21 | 5:45 – 6:30 am | Conjunction of Venus-Mars (0.75º apart) |
| 24 | 2:30 am | Full Moon Micro Full Moon: smallest full moon (occurs nearest apogee) |
| 25 | 5 am | Moon at apogee (farthest from earth) |
March 2024
| Day | Time | Event |
|---|---|---|
| 3 | 5:23 am | Last Quarter (Waning Half) Moon |
| 9 | 9:06 pm | Moon at perigee (closest to earth) |
| 9 | 11 pm | New Moon Super New Moon: largest new moon (occurs nearest perigee) |
| 10 | 2 am | Daylight Saving Time begins on mainland [Note: Hawaii does not observe DST] |
| 12 | sunrise: 6:40:35 am sunset: 6:41:12 pm |
Spring Equilux (equilux: equal day & night—12 hrs of daylight & 12 hrs of nightime) [actual difference between daylight and nightime = 74 sec] |
| 13 | 7 – 10:10 pm | Conjunction of Moon-Jupiter (4.5º apart) |
| 14 | 7 – 11:15 pm | Conjunction of Moon-Pleiades (0.6º apart |
| 16 | 6:10 pm | First Quarter (Waxing Half) Moon |
| 19 | 5:06 pm | First Quarter (Waxing Half) Moon |
| 21 | 5:45 – 6:15 am | Conjunction of Venus-Saturn (0.4º apart) |
| 23 | 5:44 am | Moon at apogee (farthest from earth) |
| 24 | 6:45 pm | Mercury at highest point in evening sky (17º altitude) |
| 24 | 6:53 – 11:32 PM | Penumbral LUNAR ECLIPSE penumbral begins 6:53 pm p enumbral max 9:12 pm penumbral begins 11:32 pm |
| 24 | 9 pm | Full Moon Micro Full Moon: smallest full moon (occurs nearest apogee) |
April 2024
| Day | Time | Event |
|---|---|---|
| 1 | 5:14 pm | Last Quarter (Waning Half) Moon |
| 6 | 5 – 6 am | Conjunction of Moon-Mars-Saturn (3º apart) |
| 7 | 5:45 – 6:10 am | Conjunction of thinnest cresent Moon-Venus (0.6º apart) |
| 7 | 7:53 am | Moon at perigee (closest to earth) |
| 8 | 6:33 – 7:55 am | Partial SOLAR ECLIPSE [Total on Mainland USA] partial begins: 6:33:32 am max: 7:12:59 am partial ends: 7:55:01 am |
| 8 | 8:20 am | New Moon Super New Moon: largest new moon (occurs nearest perigee) |
| 10 | 4:30 – 6 am | Conjunction of Mars-Saturn (0.5º apart) |
| 15 | 9:13 am | First Quarter (Waxing Half) Moon |
| 19 | 4:09 pm | Moon at apogee (farthest from earth) |
| 21 | 9:30 – 5:30 pm | Lyrid Meteor Shower peak |
| 23 | 1:48 pm | Full Moon |
May 2024
| Day | Time | Event |
|---|---|---|
| 1 | 1:27 am | Last Quarter (Waning Half) Moon |
| 3 | 3:15 – 5:45 am | Conjunction of Moon-Saturn (4.2º apart) |
| 5 | 2 – 5:30 am | Eta Aquarid Meteor Shower peak |
| 5 | 12:11 pm | Moon at perigee (closest to earth) |
| 7 | 5:21 pm | New Moon |
| 12 | 5:45 am | Mercury at highest altitude in morning sky (17º) |
| 15 | 1:48 am | First Quarter (Waxing Half) Moon |
| 17 | 9 am | Moon at apogee (farthest from earth) |
| 18 | 12:17 pm | Hilo (kau ka lā i ka lolo = "Lāhaina Noon") |
| 18 | 12:21 pm | Kailua-Kona (kau ka lā i ka lolo = "Lāhaina Noon") |
| 23 | 3:53 am | Full Moon |
| 23 | 12:21 pm | Hāna (kau ka lā i ka lolo = "Lāhaina Noon") |
| 23 | 12:25 pm | Lāna‘i City (kau ka lā i ka lolo = "Lāhaina Noon") |
| 24 | 12:23 pm | Kahului (kau ka lā i ka lolo = "Lāhaina Noon") |
| 24 | 12:24 pm | Lāhaina (kau ka lā i ka lolo = "Lāhaina Noon") |
| 25 | 12:25 pm | Kaunakakai (kau ka lā i ka lolo = "Lāhaina Noon") |
| 26 | 12:29 pm | Honolulu (kau ka lā i ka lolo = "Lāhaina Noon") |
| 27 | 12:29 pm | Kāne‘ohe (kau ka lā i ka lolo = "Lāhaina Noon") |
| 30 | 7:12 am | Last Quarter (Waning Half) Moon |
| 30 | 12:35 pm | Līhue (kau ka lā i ka lolo = "Lāhaina Noon") |
June 2024
| Day | Time | Event |
|---|---|---|
| 1 | 9:23 pm | Moon at perigee (closest to earth) |
| 2 | 3:15 – 5:30 am | Conjunction of Moon-Mars (3.5º apart) |
| 4 | 5:10 – 5:40 am | Conjunction of Mercury-Jupiter (0.4º apart) |
| 6 | 2:37 am | New Moon |
| 6 | 5:47:26 am | Earliest sunrise ever occurs in Honolulu |
| 13 | 7:18 pm | First Quarter (Waxing Half) Moon |
| 14 | 3:36 am | Moon at apogee (farthest from earth) |
| 20 | 10:50 am | Summer Solstice (first day of summer) Honolulu sunrise 5:49:05 am; sunset 7:17:22 pm Longest Day: 13h 28m 17s |
| 21 | 3:07 pm | Full Moon |
| 26 | 11:45 pm – 5:30 am | Conjunction of Moon-Saturn (0.4º apart) |
| 27 | 1:45 am | Moon at perigee (closest to earth) |
| 28 | 11:53 am | Last Quarter (Waning Half) Moon |
July 2024
| Day | Time | Event |
|---|---|---|
| 1 | 2:30 – 5:30 am | Conjunction of Moon-Mars (3.5º apart) |
| 2 | 3 – 5:30 am | Conjunction of Moon-Pleiades (0.75º apart) |
| 3 | 7:18:53 pm | Latest sunset ever occurs in Honolulu |
| 4 | 3:40 am | Perigean Spring (King) Tides (2.50 ft) — Honolulu Harbor |
| 4 | 7:06 pm | Aphelion (earth farthest from sun) |
| 5 | 12:57 pm | New Moon |
| 11 | 12:43 pm | Līhue (kau ka lā i ka lolo = "Lāhaina Noon") |
| 11 | 10:12 pm | Moon at apogee (farthest from earth) |
| 13 | 12:48 pm | First Quarter (Waxing Half) Moon |
| 14 | 12:37 pm | Kāne‘ohe (kau ka lā i ka lolo = "Lāhaina Noon") |
| 15 | 12:38 pm | Honolulu (kau ka lā i ka lolo = "Lāhaina Noon") |
| 16 | 12:35 pm | Kaunakakai (kau ka lā i ka lolo = "Lāhaina Noon") |
| 16 | 7:15 pm | Mercury at highest altitude in evening sky (20º) |
| 17 | 12:32 pm | Kahului (kau ka lā i ka lolo = "Lāhaina Noon") |
| 17 | 12:33 pm | Lāhaina (kau ka lā i ka lolo = "Lāhaina Noon") |
| 18 | 12:30 pm | Hāna (kau ka lā i ka lolo = "Lāhaina Noon") |
| 18 | 12:34 pm | Lāna‘i City (kau kā la i ka lolo = "Lāhaina Noon") |
| 21 | 12:17 am | Full Moon |
| 21 | 4:42 pm | Perigean Spring (King) Tides (2.57 ft) — Honolulu Harbor |
| 23 | 12:27 pm | Hilo (kau ka lā i ka lolo = "Lāhaina Noon") |
| 23 | 12:31 pm | Kailua-Kona (kau ka lā i ka lolo = "Lāhaina Noon") |
| 23 | 7:43 pm | Moon at perigee (closest to earth) |
| 23 | 10 pm – 5:45 am | Conjunction of Moon-Saturn (3.4º apart) |
| 27 | 4:51 pm | Last Quarter (Waning Half) Moon |
| 28 | 9 pm – 5:30 am | Delta Aquariid Meteor Shower peak |
| 30 | 2:15 – 5:45 am | Conjunction of Moon-Mars-Jupiter-Aldebaran (5.5º apart) [diamond formation] |
August 2024
| Day | Time | Event |
|---|---|---|
| 4 | 1:13 am | New Moon |
| 8 | 3:32 pm | Moon at apogee (farthest from earth) |
| 12 | 5:18 am | First Quarter (Waxing Half) Moon |
| 12 | 10 pm – 5:30 am | Perseid Meteor Shower peak |
| 15 | 1 – 5:45 am | Conjunction of Mars-Jupiter (0.5º apart) |
| 19 | 8:25 am | Full Moon Blue Moon: third Full Moon in a season with four Full Moons |
| 20 | 7:05 pm | Moon at perigee (closest to earth) |
| 20 | 8:15 pm – 6 am | Conjunction of Moon-Saturn (3.3º apart) |
| 24 | 11:30 pm – 6 am | Conjunction of Moon-Pleiades (6.5º apart) |
| 25 | 11:25 pm | Last Quarter (Waning Half) Moon |
| 27 | 1:15 – 6 am | Conjunction of Moon-Mars-Jupiter (6.5º apart) [triangular formation] |
| 31 | 1 pm – 5:30 am | Aurigid Meteor Shower peak |
September 2024
| Day | Time | Event |
|---|---|---|
| 2 | 3:55 pm | New Moon |
| 4 | 7 – 7:45 pm | Conjunction of Moon-Venus (2.7º apart) |
| 5 | 6:15 am | Mercury at highest altitude in morning sky (17º) |
| 5 | 4:55 am | Moon at apogee (farthest from earth) |
| 10 | 8:05 pm | First Quarter (Waxing Half) Moon |
| 16 | 7:45 pm – 5:30 am | Conjunction of Moon-Saturn (0.5º apart) |
| 17 | 4:34 pm | Full Moon Super Full Moon: largest/brightest full moon (occurs nearest perigee) |
| 17 | 6:35 – 6:47 pm | Penumbral LUNAR ECLIPSE [partial eclipse on Mainland USA] begins: local max: ends: 6:35 pm (moonrise) 6:37 pm 6:47 pm |
| 18 | 3:26 am | Moon at perigee (closest to earth) |
| 21 | 9:45 pm – 5:30 am | Conjunction of Moon-Pleiades (0.2º apart) |
| 22 | 2:43 am | Autumnal Equinox (first day of Fall) |
| 22 | 11 pm – 6 am | Conjunction of Moon-Jupiter (7.0º apart) |
| 24 | 8:49 am | Last Quarter (Waning Half) Moon |
| 25 | 12:30 – 6:15 am | Conjunction of Moon-Mars (5.5º apart) |
| 27 | 5:35 – 6:05 am | Comet C/2023 A3 (Tsuchinshan-ATLAS) at perihelion; altitude 15o in morning sky; visible Sep 18 – Oct 4 |
| 29 | sunrise: 6:21:12 am sunset: 6:21:38 pm |
Fall Equilux (equilux: equal day & night—12 hrs of daylight & 12 hrs of nightime) [actual difference between daylight and nightime = 52 sec] |
24October 2024
| Day | Time | Event |
|---|---|---|
| 2 | 6:23 – 7:53 am | Partial SOLAR ECLIPSE [Annual Solar Eclipse in South Pacific] partial begins: 6:23:07 am (sunrise) max: 6:45:55 am partial ends: 7:52:52 am |
| 2 | 8:49 am | New Moon Micro New Moon: smallest new moon (occurs nearest apogee) |
| 2 | 9:40 am | Moon at apogee (farthest from earth) |
| 5 | 6:30 – 7:45 pm | Conjunction of Moon-Venus (5.4º apart) |
| 8 | 6 pm – 1 am | Draconid Meteor Shower peak |
| 10 | 8:55 am | First Quarter (Waxing Half) Moon |
| 12 | 6:30 pm – 7:55 pm | Comet C/2023 A3 (Tsuchinshan-ATLAS) at perigee; altitude 9º in evening sky; visible Oct 12 – Dec 15 |
| 13 | 6:15 pm – 3:25 am | Conjunction of Moon-Saturn (4.4º apart) |
| 16 | 2:46 pm | Moon at perigee (closest to earth) |
| 17 | 1:26 am | Full Moon Super Full Moon: largest/brightest full moon (occurs nearest perigee) |
| 18 | 8 pm – 6:15 am | Conjunction of Moon-Pleiades (3.4º apart) |
| 20 | 9:15 pm – 6:15 am | Conjunction of Moon-Jupiter (6º apart) |
| 20 | 10:30 pm – 6 am | Orionid Meteor Shower peak |
| 22 | 11:40 pm – 6:15 am | Conjunction of Moon-Mars (4.7º apart) |
| 23 | 10:03 pm | Last Quarter (Waning Half) Moon |
| 29 | 12:50 pm | Moon at apogee (farthest from earth) |
November 2024
| Day | Time | Event |
|---|---|---|
| 1 | 2:47 am | New Moon |
| 2 | 12:14:58 pm | Earliest "noon"—earliest time sun crosses the meridian in Honolulu (earliest apparent noon) |
| 3 | 2 am | Daylight Saving Time ends on mainland [Hawaii does not observe DST] |
| 4 | 6 – 8:15 pm | Conjunction of Moon-Venus (4º apart) |
| 8 | 7:55 pm | First Quarter (Waxing Half) Moon |
| 10 | 6:15 pm – 1:45 am | Conjunction of Moon-Saturn (1.8º apart) |
| 11 | 7 pm – 6 am | North Taurid Meteor Shower peak |
| 14 | 1:18 am | Moon at perigee (closest to earth) |
| 15 | 11:28 am | Full Moon |
| 15 | 6 pm – 6:30 am | Conjunction of Moon-Pleiades (0.5º apart) |
| 16 | 7:30 pm – 6:15 am | Conjunction of Moon-Jupiter (5.5º apart) |
| 17 | 12:30 – 6 am | Leonid Meteor Shower peak |
| 17 | 5:49 pm | Pleiades rise at sunset (first condition needed for declaring start of Makahiki; must wait until the sighting of first visible crescent moon after this date) |
| 18 | 5:50 pm | Mercury at highest point in evening sky (15º altitude) |
| 19 | 11:30 pm – 6:30 am | Conjunction of Moon-Mars (4.3º apart) |
| 22 | 3:27 pm | Last Quarter (Waning Half) Moon |
| 26 | 1:56 am | Moon at apogee (farthest from earth) |
| 26 | 5:49:24 pm | Earliest sunset ever occurs in Honolulu |
| 30 | 8:21 pm | New Moon Black Moon: second New Moon in a calendar month |
December 2024
| Day | Time | Event |
|---|---|---|
| 1 | sunset | Beginning of Makahiki with sighting of first visible crescent moon (Hilo moon) after rise of Pleiades (this unofficially could be consider beginning of Makahiki; technically someone must visually sight the first crescent moon that occurs after the Mahakihi rise at sunset) |
| 4 | 6 – 8:45 pm | Conjunction of Moon-Venus (3.3º apart) |
| 7 | 6 pm – 12:05 am | Conjunction of Moon-Saturn (0.5º apart) |
| 8 | 5:26 am | First Quarter (Waxing Half) Moon |
| 12 | 3:18 am | Moon at perigee (closest to earth) |
| 12 | 6:15 pm – 5:15 am | Conjunction of Moon-Pleiades (3º apart) |
| 13 | 6 pm – 6:15 am | Conjunction of Moon-Jupiter (6º apart) |
| 13 | 7 pm – 6:30 am | Geminid Meteor Shower peak |
| 14 | 11:01 pm | Full Moon |
| 17 | 8:45 pm – 6:45 am | Conjunction of Moon-Mars (1º apart) |
| 20 | 11:20 pm | Winter Solstice (first day of winter) Honolulu sunrise 7:03:09 am; sunset 5:55:45 pm Shortest Day: 10h 52m 36s |
| 21 | 7 pm – 6:39 am | Ursid Meteor Shower peak |
| 22 | 12:18 pm | Last Quarter (Waning Half) Moon |
| 23 | 7 am | Mercury at highest altitude in morning sky (20º) |
| 23 | 9:25 pm | Moon at apogee (farthest from earth) |
| 30 | 12:26 pm | New Moon |