Thursday, July 9, 2009


Why is a day divided into 24 hours? It is a strange number of sections to divide the day. Why not 10 equal segments in a day with 100 minutes each with 100 seconds?

Years are the time for the earth to revolve around the sun once. Great. There happens to be a 365.25 rotations per revolution giving us days. I have not thought about weeks much yet. But hours in a day. That one is on the mind.

I heard a good answer to this question. 24 divides into 360 evenly. 15 degrees per hour. On a analog clock, this means each number is spaced 30 degrees from its neighboors. That is cool.

But, 10 also divides into 360 nicely. It would be 36 degrees per hour. I do not advocate changing this because people are far too comfortable with longitude measurments and our current time system, but it remains interesting to me why and who decided on non-decimal time system. Is this the same for all cultures? Or is time tracking a western idea that spread accross the globe?

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