For those who enjoy the soft chimes of the orbichron^® clock, but don’t wish to be disturbed during the night, or some other period of time throughout the day, a Chime Off Window has been provided. By default, this window is disabled, and the chime, if enabled, will sound throughout the entire twenty-four hour cycle. The default Chime Off Window begins after 10:00PM and ends at 8:00AM. Note that the chime will sound at 10:00PM in the evening and at 8:00AM the following morning, but not during the intervening time.  The user may program an Off After Hour and a subsequent On Hour.