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8000 BCE
Oldest Known Calender
A mesolithic calender monument in Aberdeenshire, Scotland, is considered to be the "World's Oldest Known Calender", believed to have been built about 8,000 BCE. First excavated in 2004. -
4000 BCE
Sexagesimal Timekeeping Methods Developed
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3500 BCE
Ancient Egyptian Obelisks and the first Shadow Clocks
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1500 BCE
Sundials and the rise of the Shadow Clock
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1500 BCE
Earliest known Water Clock left behind in Egyptians Pharaoh's tomb
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600 BCE
Nocturnal Clocks and the Egyptians' Merkhet
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328 BCE
The recorded use of Water Clocks in the Hellenic World
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Period: 500 to 599
The development of the Incense Clock
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520
Oldest record of the Candle Clock
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Jan 1, 996
The First recorded Mechanical Clock made in Europe
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Jan 1, 1000
The Hourglass and its Nautical Origins
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Period: Jan 1, 1000 to Jan 1, 1399
Development and Widespread use of the Astronomical Clock
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The first Pendulum Clock invented was Dutch
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The Spiral Balance: Rise of the accurate Pocketwatch