http://www.perlmonks.org?node_id=523551


in reply to I prefer this kind of clock or watch:

I've seen a very nice little sun powered pocket watch. It's a ring shaped device which you hang from a string (maybe your necklace). You move a slider to the proper month to adjust where a pinhole is. Then you just hold it up in the sun and see what etchings the sun is shining on. Tre cool.

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