Related Clues:

• XII, perhaps
• Palindromic time of day
• It may follow eleven
• Midday time
• Lunch time, for many
• See 24 across
• It may come before one
• Halfway to tomorrow
• The middle of the day
• Eleven plus one
• "High" time
• It's not on missing tea in the middle of the day
• Twelve o'clock, midday
• Japanese play on time
• Nobody cut short when PM starts