Distant past

Billions of Years ago

13.7 billion BC

• The "Big Bang" forms the universe. Batman and the Green Lantern are present when they try to stop an alternate version of David Clinton. (JLU: The Once and Future Thing Part Two: Time, Warped)

4.6 Billion BC

• The Earth is formed out of cosmic dust orbiting the newborn Sun.

Millions of Years Ago

65 Million BC

• A majority of creatures, including dinosaurs, on Earth are destroyed by a large meteor. An alternate version of Chucko is present thanks to the alternate David Clinton. (JLU: The Once and Future Thing Part Two: Time, Warped)