Related Clues:

• Number of hills of Rome
• IX square root
• Noon, on a sundial
• Evening hour, on a clock
• Lucky number at Caesar's palace?
• See 87-Across
• The last King Richard of England
• Half of XIV
• Four, on some clock faces
• XXX ÷ X
• Cinderella's deadline
• Trilogy finale
• Midnight, in a sense
• Grandfather clock number
• Roman crowd?