Ramayana is a epic and it happened thousands years back. till now no body can correctly predict the exact time frame of Ramayana. Anyway Ramayana is about when God comes to earth and As Hanuman is God, he can swallow Sun also. If we compare with the Ramayana with some scientific stuffs then from where the Ram setu comes between India and Srilanka which is even NASA justified as man made bridge.
