Related Clues:
- Forever and a day, facetiously
- Momentous time period
- Period in a historian's book
- It's a real stretch
- A one-two-three inning makes it go down
- Astronomically long time
- History class topic
- Major time period
- Distinct span
- It seemingly never ends
- Oft-named time
- Stat that is generally lower in the NL
- 1,000,000,000 years, in geology
- Vast timeframe
- A quality start can lower it