Lifespan of horse

Lifespan of horse (30 y)

/fact/lifespan-of-horse

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Neat Ratios ...

Lifespan of horse (30 y)

is 1/1000 of Time since first humans in Europe (30,000 y)...more
is 1/1000 of Time since extinction of Neanderthals (30,000 y)...more
is 1/1000 of Age of earliest sewing needle (30,000 y)...more
is 1/1000 of Time since the earliest bread baking (30,000 y)...more
is 1/500 of Time since first humans in Americas (15,000 y)...more
is 1/40 of Time since the birth of al-Kindi (1,220 y)...more
is 1/25 of Time since the birth of Dante Alighieri (759 y)...more
is 1/4 of Time since the publication of Einstein's theory of Special Relativity (119 y)...more
is 1/4 of Time since the birth of computer scientist Grace Hopper (118 y)...more
is 2/5 of Time since the invention of the transistor (76 y)...more
is 2/5 of Period of Halley's Comet's orbit (75.3 y)...more
is about as big as Period of Saturn's orbit (29.5 y)...more
is 2 x Lifespan of a cat (15 y)...more
is 2 x Time since first iPhone launched (15 y)...more
is 2.5 x Length of the Napoleonic wars (12 y)...more
is 2.5 x Period of Jupiter's orbit (11.86 y)...more

If this was a standard unit ...