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Great article! It's fun to see the whole thing worked out with all the numbers. But one statement is partly incorrect: "Every other unit of time we use (second, hour, week, month) is rather arbitrary. They're convenient, but not based on independent, non-arbitrary events." The month ("moonth") is based on the Moon's orbit around Earth, which takes about 29.5 days from full Moon to full Moon (but only about 27.3 days with respect to the stars). That's why our months tend to be about 30 days each. And if you look at the lunar calendars of yore, you can go through the same type of math that's in this article to explain why every now and then the ancients had to add an extra ("intercalary") month to keep their lunar calendars from going out of whack. Fun stuff!, online pokies, laner,
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