Related Clues:

• Twelve to one
• Calendar row
• Minute hand's circuit
• Billing unit, for some
• It lasts for days
• Wall-calendar line
• Day part
• See 17 Across
• It starts on Sunday
• Cuckoo announcement
• Zero ___
• Approximate time between NFL games
• Chunk of time
• It'll last for days
• Word with ''rush'' or ''happy''