Related Clues:

• During office hours
• From nine to five, in the classifieds
• Quite a while
• Boxes of calendars?
• Periods of time
• Dark
• See 11-Across
• Times
• During working hours
• Lifetime
• Word with 'Happy' and 'Death Valley' in old TV titles
• Biblical time of rest
• Fortnight's fourteen
• Time periods
• Some time