Electronic Time Synchronising System consists of global positioning system along the data received through the satellites. The System has a facility to synchronize the clock every hour, every six hours, every day, at the on set of pc start, or at command, etc, through software settings. The System can be used to synchronize the system clock of various field units like RTU, wireless transmitters, etc used in a SCADA system. The Electronic Time Synchronising System is capable of providing efficient performance.