Compare for several chime programs
Norwalk B1515: more choices for a scheduled chime
Norwalk documents Westminster, Ave Maria or Bim-Bam on the hour, with a separate quarter-hour Westminster option. Compare it when the choice of sound programs matters. This guide does not establish which melody sounds better.
The linked 67J instructions separate the AA timekeeping cell from two C cells for the chime mechanism. They describe a night option from 11:00 PM to 5:45 AM. That window is not a light sensor, and a melody preview does not prove correct clock/chime synchronization. Keep the existing night-control explanation in view.
Check before ordering: Match the supplied movement instructions and leave room to reach the rear controls.