"While working with Eclipses (Solar and Lunar) and occultations (the moments when the Sun's or the Moon's visible disk covers some other planet), we should remember always that these phenomena are observed in some specific areas of the Earth.
The occultation is another interesting astronomical phenomenon. It occurs when the Sun or the Moon covers some other planet as observed from the Earth's surface. As with Eclipses, we can observe these phenomena from some particular places on the Earth. Thus we can calculate the occultation path"