Fundraiser: Server Costs 2020
Please help us cover our server costs for this year. We are a non-profit organization and we would rather spend the money on our mission to engage people with cultural heritage and to improve history education worldwide.
c. 1600 BCEEarliest Egyptian water clocks in use.
c. 450 BCEParapegma star calendar invented in Greece by Meton and Euctemon.
c. 275 BCECtesibius invents first sophisticated multi-cogged water-clock.
c. 159 BCEFirst water-clock set up in Rome.
c. 110 BCE - c. 50 BCETower of The Winds by Andronicus constructed in Athens.
c. 50 BCEAntikythera instrument invented, an astronomical measuring device.
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