Related Clues:

• At all times
• 24/7
• Twelve o'clock?
• That's twelve of ours, by the sound of it
• Ours by the dozen, by the sound of it
• Twelve of ours, by the sound of it
• 12 hrs.
• All the time, on the face of it
• What o'clock is it? all day
• Twelve hours
• 'Sounds as if there's twelve of ours in this (5,3,5)'
• For the full hours
• 24-7
• 24 hours without a break
• From midnight to midnight