A Delay/Disruption Tolerant Network (DTN) is a network where temporary or intermittent connectivity among all nodes exist. Conventional routing protocols require end to end connectivity whereas DTN does not require such connectivity. This paper leads to the critical problem of how to route a packet from one node to another, in such a network. This problem becomes more complex, when the node mobility is also considered. In real mobility patterns the nodes always move in some predictable fashion rather than the random movement.