No it does not. Earthquake changes the internal structure of the earth, which offset its rotational rate (as angular momentum must be conserved and the moment o

No it does not. Earthquake changes the internal structure of the earth, which offset its rotational rate (as angular momentum must be conserved and the moment of inertia changed). It does not change the angular momentum of any system, nor does it change the moment of inertial of the sun-earth system.