Ms 7.0 Manzikert, Turkey
updated 27 April 2022

On 28 April 1903 a major earthquake occurred at Manzikert, Turkey. The seismic event occurred at 23:46 UTC and had an estimated surface wave magnitude (Ms) 7.0.

The earthquake occurred at the time that Uranus and Neptune were on opposite sides of the solar system. As a result Mercury regularly aligned with the outermost planets in a very short time (1-2 days), which was the case on 23 and 24 April 1903. In addition, Venus aligned with the Sun and Saturn on the 26th. Lunar geometry peaked high on 24-25 and 27-28 April, after which the major earthquake occurred. See the SSGI-graph below.

Mercury-Sun-Uranus        1903-04-23,  5:21:58  264°21'38"
Sun-Mercury-Neptune       1903-04-24, 19:39:43   94°23'36"
Venus-Sun-Saturn          1903-04-26, 15:34:36  304°26'19"

Earth-Moon-Jupiter        1903-04-23, 17:49:17  345°29'14"
Moon-Earth-Mars           1903-04-24, 21:24:23  180°12'51"
Earth-Moon-Sun            1903-04-27, 15:54:00   37°33'43"
					
SSGI chart
SSGI depiction of planetary (PG) and lunar (LG) geometry