Ancient Egyptians invented precise timekeeping with sundials
Ancient Egyptians pioneered systematic timekeeping over 3,500 years ago, using sundials that precisely measured time by tracking the sun's shifting shadows.
Over 3,500 years ago, ancient Egyptians mastered time with sundials, using shadows to track the day. The oldest known sundial, from around 1500 BCE, was a simple L-shaped device found in the Valley of the Kings. It featured markings where a gnomon's shadow shifted, dividing daylight into 12 hours with remarkable accuracy, often within 15-30 minutes.
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