Thread: Prehistoric Astronomers 7:30PM Sun 14 June SBS 1
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Old 15-06-2009, 08:13 AM
Wavytone
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Join Date: Jul 2008
Location: Killara, Sydney
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Rather liked the pocket lunar calendar - the bone with 69 holes in it. Calibrate with the cave paintings to confirm which month it is (if there is any doubt) and you have a perpetual calendar.

And simpler than the perpetual calendars of today.
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