We live in a base-10 world. The decimal system governs everything from the binary functions of computers to the amount of change you get when you buy a Mashed Potato Slurpee. So why isn't the standard Earth day just 10 hours long? Credit the Egyptians for that one.
Sigh, I just found out that I'll celebrate my next birthday at the end of September and I am old geezer, at least in Venusian years. Curious about your own age if you lived on Venus and used its shorter calendar?