On 10 April 1906 a major earthquake occurred in Baja California Sur, Mexico at a depth of 15 km. The seismic event occurred at 21:22:53 UTC and had an estimated moment magnitude (Mw) 7.3.
The estimated primary trigger of this seismic event is critical lunar geometry with Uranus and Neptune on 5 and 8 April.
In 1906 Uranus and Neptune were on opposite sides of the Solar System. This resulted several times in (near) conjunctions with Earth as well as critical lunar geometry with both outer planets. This type of lunar geometry with outer planets is associated with major to great earthquakes and several of them occurred in 1905 and 1906 following this geometry. In 1906 alone 22 earthquakes occurred with magnitude 7 and larger, seven of which with magnitude 7.8 and larger and five with magnitude 8.
On 5 April 1906 two planetary conjunctions converged, critical of which was Venus-Mars-Jupiter. Also on 5 April critical lunar semi-right angles occurred in a short time with Uranus and Neptune, followed by opposing lunar right angles with the same planets on 8 April.
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Sun-Mercury-Earth 1906-04-05, 4:20:08 195°47'39" Venus-Mars-Jupiter 1906-04-05, 18:42:52 78°46'59" Sun: Mercury-Neptune 1906-04-03, 19:44:27 90°00'00" Mercury: Mars-Uranus 1906-04-04, 6:57:20 135°00'00" Venus: Mercury-Jupiter 1906-04-04, 18:57:33 135°00'00" Venus: Mercury-Mars 1906-04-04, 20:15:20 135°00'00" Sun: Mercury-Mars 1906-04-06, 2:36:26 135°00'00" Mercury: Mars-Neptune 1906-04-06, 10:36:43 45°00'00" Sun: Mercury-Saturn 1906-04-07, 6:56:54 135°00'00" Venus: Earth-Mars 1906-04-08, 23:18:29 135°00'00" Mercury: Earth-Mars 1906-04-09, 1:38:26 135°00'00" Sun: Venus-Uranus 1906-04-09, 5:36:34 135°00'00" Sun: Mercury-Jupiter 1906-04-09, 7:14:54 135°00'00" Venus: Earth-Jupiter 1906-04-09, 8:45:46 135°00'00" Sun: Venus-Neptune 1906-04-11, 18:17:11 45°00'00" Venus: Mercury-Uranus 1906-04-12, 12:53:04 45°00'00" Moon-Earth-Saturn 1906-04-06, 17:32:39 341°30'42" Moon-Earth-Mercury 1906-04-08, 21:06:18 12°53'47" Moon-Earth-Sun 1906-04-09, 8:16:14 19°53'09" Moon-Earth-Venus 1906-04-10, 7:26:17 34°29'11" Moon-Earth-Mars 1906-04-11, 6:36:39 49°05'41" Moon-Earth-Jupiter 1906-04-12, 11:28:32 67°04'26" Earth: Moon-Mars 1906-04-04, 18:10:16 90°00'00" Earth: Moon-Neptune 1906-04-05, 11:14:33 45°00'00" Earth: Moon-Uranus 1906-04-05, 12:37:05 135°00'00" Earth: Moon-Mars 1906-04-08, 3:18:21 135°00'00" Earth: Moon-Neptune 1906-04-08, 14:53:49 90°00'00" Earth: Moon-Uranus 1906-04-08, 16:07:27 90°00'00" Earth: Moon-Jupiter 1906-04-09, 10:48:38 135°00'00" Earth: Moon-Saturn 1906-04-09, 19:18:50 135°00'00" Earth: Moon-Neptune 1906-04-11, 14:32:32 135°00'00" Earth: Moon-Uranus 1906-04-11, 15:43:00 45°00'00"