Related Clues:

• Brief last greeting sounds noble
• Day nothing changed?
• Not quite time in the foregoing for a 10 (26)'s subject
• Nearly time to see the moon?
• Nearly time - for bed?
• It's dark almost on time
• The time when Lancelot, say, lost his head
• Fall behind it at the end of day
• 'The Dark Cavalier' hides his head
• Close on temperature for a usually colder period
• An awful thing, the moment when stars appear
• Sir Kay spent hours in darkness
• Hours of darkness
• Thing (anag)
• Tennyson's 'black bat'