Duration of Roman Empire

Duration of Roman Empire (503 y)

/fact/duration-of-roman-empire

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Neat Ratios ...

Duration of Roman Empire (503 y)

is about as big as Duration of Carthaginian Empire (504 y)...more
is about as big as Duration of Egyptian Empire (500 y)...more
is 2 x Period of Pluto's orbit (248 y)...more
is 20 x One average human generation (25 y)...more
is 250 x Lifespan of rat (2 y)...more
is 500 x Period of Earth's orbit (1 y)...more

If this was a standard unit ...