Related Clues:

• It's dark when headless horseman appears
• Report of man that's stood by castle in dark period
• It falls daily but never breaks
• With 9-Down, hit sitcom of the 1980s-'90s
• Havers, perhaps missing the Spanish height in the dark
• President leaving office, perhaps
• Dream time approaching, close to sunset
• It's almost time when I should retire
• 'Sweet dreams'
• Dark period for titled fellow losing his 'K'
• Battle force turns to north when it's dark
• Strange thing, but it's time for bed
• Man’s heading off when it’s time to retire
• Dark near light, ultimately
• When to go to bed