On 20 March 2021 a major earthquake occurred near the East Coast of Honshu, Japan at a depth of 40 km. The seismic event occurred at 09:09:44 UTC and had an estimated moment magnitude (Mw) 7.0.
The estimated primary trigger of this seismic event is a convergence of planetary conjunctions on 16 March 2021.
On 14 March a planetary conjunction occurred with Earth, Venus and Neptune. It was followed by two planetary conjunctions on 16 March, also involving Venus. The first conjunction occurred at 12:39 UTC with Mars, Venus and Saturn. The second conjunction with the Sun, Venus and Neptune occurred 5 hours later. The planetary geometry was followed by a lunar conjunction with Uranus early on 17 March. A first strong tremor occurred later on 16 March, following the planetary conjunctions.
#MoonUranus
Earth-Venus-Neptune 2021-03-14, 04:01:21 350°28'05" Mars-Venus-Saturn 2021-03-16, 12:39:11 302°33'11" Sun-Venus-Neptune 2021-03-16, 17:40:59 350°22'58" Mars-Venus-Jupiter 2021-03-22, 20:16:05 307°07'10" Sun: Mercury-Venus 2021-03-13, 01:50:25 90°00'00" Sun: Mercury-Neptune 2021-03-15, 04:33:18 90°00'00" Sun: Mercury-Saturn 2021-03-15, 06:26:50 45°00'00" Venus: Earth-Jupiter 2021-03-15, 21:47:41 135°00'00" Earth: Venus-Uranus 2021-03-16, 03:39:28 45°00'00" Sun: Mercury-Uranus 2021-03-16, 19:58:18 135°00'00" Sun: Venus-Saturn 2021-03-16, 21:34:13 45°00'00" Sun: Mercury-Earth 2021-03-17, 13:08:34 90°00'00" Earth: Venus-Saturn 2021-03-17, 16:35:11 45°00'00" Sun: Mercury-Jupiter 2021-03-18, 01:07:04 45°00'00" Venus: Earth-Uranus 2021-03-18, 23:39:56 135°00'00" Sun: Venus-Uranus 2021-03-19, 14:20:49 45°00'00" Venus: Mars-Neptune 2021-03-20, 06:04:48 135°00'00" Venus: Mercury-Saturn 2021-03-21, 05:37:18 90°00'00" Sun: Venus-Jupiter 2021-03-21, 21:45:42 45°00'00" Venus: Mercury-Neptune 2021-03-22, 20:38:06 135°00'00" Earth-Moon-Venus 2021-03-13, 02:50:17 349°09'35" Earth-Moon-Neptune 2021-03-13, 05:16:08 350°25'56" Earth-Moon-Sun 2021-03-13, 09:42:00 352°44'47" Earth-Moon-Uranus 2021-03-17, 03:00:16 37°59'14" Earth-Moon-Mars 2021-03-19, 17:47:43 68°51'32" Earth: Moon-Uranus 2021-03-13, 09:50:18 45°00'00" Earth: Moon-Saturn 2021-03-13, 12:59:55 45°00'00" Earth: Moon-Jupiter 2021-03-14, 08:00:42 45°00'00" Earth: Moon-Mercury 2021-03-15, 02:16:07 45°00'00" Earth: Moon-Mars 2021-03-15, 17:53:44 45°00'00" Earth: Moon-Neptune 2021-03-16, 22:07:26 45°00'00" Earth: Moon-Venus 2021-03-17, 05:38:41 45°00'00" Earth: Moon-Saturn 2021-03-17, 06:43:03 90°00'00" Earth: Moon-Sun 2021-03-17, 10:40:32 45°00'00" Earth: Moon-Jupiter 2021-03-18, 03:37:27 90°00'00" Earth: Moon-Mercury 2021-03-19, 08:47:40 90°00'00" Earth: Moon-Neptune 2021-03-20, 17:44:51 90°00'00" Earth: Moon-Uranus 2021-03-20, 22:39:38 45°00'00" Earth: Moon-Saturn 2021-03-21, 02:40:01 135°00'00" Earth: Moon-Venus 2021-03-21, 11:24:59 90°00'00" Earth: Moon-Sun 2021-03-21, 14:01:22 90°00'00" Earth: Moon-Jupiter 2021-03-21, 23:55:31 135°00'00"