The new trend is to consider node mobility to consist as a major achievement to transfer data forwarding is opportunistic Mobile Ad hoc NETworks (MANETs). This is a special class of growing and disconnected MANETs where data communication exploits at irregular interval, contact opportunities among nodes. Nodes exchange data if they are at a distance at most within each other, where is the node transmission radius. To find the speed of data propagation, the authors are using the flooding time.