Period of Halley's Comet's orbit

Period of Halley's Comet's orbit (75.3 y)

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If Period of Halley's Comet's orbit (75.3 y) was a standard unit ...

Time since first humans in Europe (30,000 y)...more would be 400 x Period of Halley's Comet's orbit
Time since extinction of Neanderthals (30,000 y)...more would be 400 x Period of Halley's Comet's orbit
Age of earliest sewing needle (30,000 y)...more would be 400 x Period of Halley's Comet's orbit
Time since the earliest bread baking (30,000 y)...more would be 400 x Period of Halley's Comet's orbit
Time since first humans in Americas (15,000 y)...more would be 200 x Period of Halley's Comet's orbit
Age of earliest swords (3,700 y)...more would be 50 x Period of Halley's Comet's orbit
Time since the peak of Roman Empire (1,900 y)...more would be 25 x Period of Halley's Comet's orbit
Duration of Pandyan Empire (South India) (1,850 y)...more would be 25 x Period of Halley's Comet's orbit
Time since the birth of Dante Alighieri (759 y)...more would be 10 x Period of Halley's Comet's orbit
Time since the birth of Newton (381 y)...more would be 5 x Period of Halley's Comet's orbit
Duration of Mali Empire (375 y)...more would be 5 x Period of Halley's Comet's orbit
Lifespan of Galapagos giant tortoise (190 y)...more would be 2.5 x Period of Halley's Comet's orbit
Time since the invention of the transistor (76 y)...more would be about as big as Period of Halley's Comet's orbit
Lifespan of horse (30 y)...more would be 2/5 of Period of Halley's Comet's orbit
Lifespan of a cat (15 y)...more would be 1/5 of Period of Halley's Comet's orbit
Time since first iPhone launched (15 y)...more would be 1/5 of Period of Halley's Comet's orbit
Period of Mars's orbit (1.88 y)...more would be 1/40 of Period of Halley's Comet's orbit