Related Clues:

• Moment that can worry sheep and cattle
• Second six balls run smoothly
• Sign of the right moment
• Instant - credit
• Bloodsucker - credit!
• Mark of work done (right)
• Credit - bloodsucker
• Parasite - mark of approval
• Small bloodsucker
• Noise from a clock
• Bit of time
• Stroke, by the sound of it, on time
• The mark of one's franchise in 15 across
• To-do list marking
• Auditor's mark