Related Clues:

• Continuously
• Every minute
• Always
• Without stopping
• At all times
• Constantly
• 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