Lifespan of a cat

Lifespan of a cat (15 y)

/fact/lifespan-of-a-cat

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Neat Ratios ...

Lifespan of a cat (15 y)

is 1/2000 of Time since first humans in Europe (30,000 y)...more
is 1/2000 of Time since extinction of Neanderthals (30,000 y)...more
is 1/2000 of Age of earliest sewing needle (30,000 y)...more
is 1/2000 of Time since the earliest bread baking (30,000 y)...more
is 1/1000 of Time since first humans in Americas (15,000 y)...more
is 1/250 of Age of earliest swords (3,700 y)...more
is 1/50 of Time since the birth of Dante Alighieri (759 y)...more
is 1/25 of Time since the birth of Newton (381 y)...more
is 1/25 of Duration of Mali Empire (375 y)...more
is 1/5 of Time since the invention of the transistor (76 y)...more
is 1/5 of Period of Halley's Comet's orbit (75.3 y)...more
is 1/2 of Lifespan of horse (30 y)...more
is 1/2 of Period of Saturn's orbit (29.5 y)...more
is about as big as Time since first iPhone launched (15 y)...more

If this was a standard unit ...