During a total solar eclipse the Moon moves across the bright disc of the Sun from west to east. So, as the eclipse progresses, the Moon’s shadow too moves in the same direction. The Earth too spins from west to east. But the speed of movement of the Moon’s shadow is much greater than the speed at which the surface of the Earth moves from west to east. As a result, the Moon’s shadow still moves from west to east along the path of totality.
