Sets the internal clock of the CCD controller.
2=to: 2!:}Format: <HH:MM:SS> SET-TIME
2=to: 2!:}Example: 14:28:00 SET-TIME
2=to: 2!:}Comments: This affects the time stamp which will appear in the headers of CCD exposures. If accurate times are required this should be reset every night. Currently the seconds must be zero.