Normally the PCFS synchronizes its time from from the S2 formatter. Typing the command:
> sy=run setcl offset &
Will resynchronize the time. If the S2 is not connected to the DAS (e.g. for disk recording) then use the command
> sy=run setcl cpu &
Try rebooting the PC. The PCFS time mechanism does not work if the PC has not been rebooted within the last 268 days.
Plug the S2 into the DAS if not doing a disk based experiment