Left: orthographic projection of the orbital motion of the Moon around Earth (E). Right: geometrical representation of SZA(θ_SZA = ∠AOB). A: subsolar point, B: specific location on the Moon (red dot), C: intersecting point of the specific location’s meridian with the equator, and D: (latitude, longitude) = (0^∘, 0^∘), The angles Λ_Lat = ∠COB: latitude, Λ_Lon = ∠DOC: longitude, and ﹩\omega =\angle AOD={\theta }_{d}+2\pi \left(\frac{t}{{t}_{\,{\rm{period}}\,}}\right)﹩. The black arrows near points B and D represent the direction of the shift over time due to the Moon’s rotation about its axis in the course of its orbital motion around Earth. The violet arrow points toward Earth. θ_d is the angle to maintain tidal locking.