Related Clues:

• The time of one's life?
• Time in history
• See 6-Down
• Get hoary
• What candles may signify
• See 36-Across
• Well-kept secret, for some
• Kind of group
• Tree rings indication
• See 48-Across
• Get on
• Driver's license datum
• Gender
• Slice of history
• Sensitive subject, to some