On 4 November 2017 a strong earthquake occurred at Tonga at a depth of 10 km. The seismic event occurred at 09:00:19 UTC and had an estimated moment magnitude (Mw) 6.8.
In the days leading up to the earthquake Earth was moving between Venus and Uranus, which resulted in critical lunar geometry, especially on 3 November when lunar geometry reached index 16, as the Moon lined up with Venus and Uranus within three hours. In Addition, the Moon aligned with Jupiter later on the same day, hours before the Moon opposed the Sun (Full Moon) early on the 4th. Less than two days before the Venus-Earth-Uranus alignment Mercury alined with the Sun and Saturn, which is known to be a critical alignment. While the seismic response reached magnitude 6.8 at Tonga, there was certainly the potential for larger seismic activity, at least in the low 7 magnitude range.
Sun-Mercury-Saturn 2017-11-02, 13:21:04 268°28'33" Venus-Earth-Uranus 2017-11-04, 4:44:19 25°39'07" Moon-Earth-Venus 2017-11-03, 0:13:26 204°09'59" Earth-Moon-Uranus 2017-11-03, 2:46:18 25°41'39" Moon-Earth-Jupiter 2017-11-03, 18:11:18 215°01'34"