As the rotational and orbital time is almost same,Moon shows only one side to Earth.
Few things to note here
1) The orbit of rotation of Moon and Earth are at 5.14 degrees. This is why every new Moon and Full Moon we do not have eclipses. This is how the point of tidal pull application moves along Moon.However, it should be limited to +or- 5.4 degrees ie 11 degrees .
So one more hypothesis is , the Moon quakes are generally (80%)between + or - 6 degrees of Moon.
Nevertheless the Moon quakes induced by Sun ,Venus or Jupiter Mas etc can be all over Moon globe
correction..
Though the angle between two orbit is 5 degrees ,as the distance increases,the tidal pull may cover whole of the visible side of Moon. Moreover the quake can occur at Nadir (180degrees apart) also,it will cover whole Moon
We have maximum declination of any planet is up to + or - 27 or 28 degrees, looking from Earth,the Earthquakes occur at remote locations like 50 N or S
Amit
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