Related Clues:

• Session length, perhaps
• Fortnight half
• Clock unit
• Part of a day
• See 23 Across
• Happy or zero follower
• TV drama length, often
• Word with ''happy'' or ''eleventh''
• "Spring forward" amount
• 70 Across info
• Sweeps __
• 50 minutes, to a shrink
• Lunch break, often
• Seven-day period
• Day fraction