Setting the Cimel Control Box Time (Greenwich mean time):
 
If the display is inactive, press the GREEN button to activate it.
Press the GREEN button (PW)
Press the RED button to increment the password to 1
Press the GREEN button (PASS WORD)
Press the YELLOW button (DAT)
 
Use the YELLOW (-) and RED (+) buttons to decrease or increase the values.  Use the WHITE button (X) to move to the next parameter.  You will be presented with the values for Year, Month, Day, Hour, and Minute in that order.  When entering the time, set it for the next incremental minute, then press the GREEN button (OK) at the minute time hack, which sets the seconds to zero and starts the clock. 
 
NOTE:  Each access of the DAT menus will set the seconds to zero upon exit, even if no modifications are made.