Related Clues:

• Wine connoisseur's concern
• Forever, or close to it
• '00, e.g.
• Subscription length, often
• One billion years
• Almost forever
• Time in history
• Ages and ages
• See 54-Across
• Lots of time
• Interminable time
• Junior, for one
• 2001, e.g.
• A long time
• Birthday-to-birthday span