Related Clues:

• Cuckoo announcement
• Zero ___
• Chunk of time
• Word with ''rush'' or ''happy''
• Like many photo services
• Customary time
• Happy __
• Appointment-book line
• Frequent TV episode length
• "The __ of departure has arrived": Socrates
• Little-hand indication
• Attorney's billing basis
• TV time slot, often
• Network slot unit
• Session length, perhaps