Is That A Big Number?

If Length of one Alautun, longest unit in Mayan calendar (63.1 million y) was a standard unit ...

Time since the emergence of earliest reptiles (315 million y)...more would be 5 x Length of one Alautun, longest unit in Mayan calendar

Time since the end of the Permian geologic period (252 million y)...more would be 4 x Length of one Alautun, longest unit in Mayan calendar

Time since the emergence of flowering plants (125 million y)...more would be 2 x Length of one Alautun, longest unit in Mayan calendar

Time since the first modern humans (250,000 y)...more would be 1/250 of Length of one Alautun, longest unit in Mayan calendar

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