A method for synchronizing at least two nodes on a network including one network node acting as a master node, the master node setting a base time T0,master, and sending elapsed time since T0,master to at least one other node acting as a slave node, and the at least one other node acting as the slave node receiving the elapsed time, and estimating and setting a value of a base time T0,slave based, at least partly, on the received elapsed time. Related apparatus and methods are also described.