In this video, Vaclav will teach you how to read Prague Astronomical Clock, step by step. You will learn how to read the Old Czech Time, Old German Time, Babylonian Time, and Vaclav will also tell you... continue reading
posted by BSR 1 year 4 months 3 weeks ago • 28 views • 6:26search results matching tag: Calendar
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Too much math. YouTube: Neil deGrasse Tyson explains the logic behind the leap year, with a brief history in calendars as well.
posted by PlayhousePals 8 years 2 months 2 weeks ago • 133 views • 3:22... and now you know.
posted by PlayhousePals 8 years 4 months 2 weeks ago • 1,250 views • 3:57- 1