Related Clues:

• Lunch hour, often
• Minute hand's circuit
• Billing unit, for some
• Twelve p.m.
• Day part
• See 17 Across
• When the hands are at the top of the face
• Cuckoo announcement
• Joining-of-hands period
• Zero ___
• Middle of the day
• Chunk of time
• Halfway mark of a sort
• Word with ''rush'' or ''happy''
• Customary time