Clue: 365 billion days, astronomically

Answer: EON

Length: 3

---

Similar Clues:

• 365 billion days, geologically (EON with 3 letters)
• 365 billion days, in astronomy (EON with 3 letters)
• Allen's ____ Days (RADIO with 5 letters)
• Farrell's "My Days of ___" (ANGER with 5 letters)
• Th, in Anglo-Saxon days (EDH with 3 letters)
• "Old Creole Days" author (CABLE with 5 letters)
• Hydra, astronomically (SEASERPENT with 10 letters)
• Billion-year increments (EONS with 4 letters)
• '-- days hath ...' (THIRTY with 6 letters)
• Parts of days Abbr. (HRS with 3 letters)