... The GPS and GPS Common-view are the methods used to refer measurements made using the Parkes observatory clock ("UTC(PKS)") to Universal Coordinated Time (UTC). ... Transfer from UTC(AUS) to UTC is possible via the offsets reported in Circular T. These methods of the clock corrections commenced on the MJD 50844. ... Currently used scheme is fully integrated into tempo2 , where fairly regularly sampled values of the offset between pairs of clocks are recorded in ASCII text files, one pair per file. ...