Related Clues:

• When many bars close
• Time when DST starts
• Latish curfew
• Wee hr., and a hint to a feature common to this puzzle's four longest answers
• When New York's Central Park closes
• An hr. after midnight
• When bars close in Boston
• Weest of wee hours
• Time to retire, maybe
• Early morning hr
• When D.S.T. starts or ends
• Common infomercial hour
• Rather late bedtime
• Wee hr. of the morning
• When 'SNL' ends, in local time