Ancient Calendars and Timekeeping

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1/15 cards
What was the primary purpose of early calendars?
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To track agricultural cycles and religious events.
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Which ancient civilization is credited with inventing the 365-day calendar?
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The Egyptians.
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What tool did ancient Egyptians use to measure time during the day?
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Sundials.
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What was a water clock or 'clepsydra' used for in ancient times?
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To measure time intervals, especially at night or on cloudy days.
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Which civilization developed the lunar calendar based on moon phases?
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The Mesopotamians.
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How did ancient Chinese calendar systems differ from the Roman ones?
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They were lunisolar, combining lunar and solar elements.
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What was the ancient Roman calendar originally based on?
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A lunar calendar.
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Why did Julius Caesar reform the Roman calendar in 45 BCE?
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To correct inaccuracies caused by the lunar system, leading to the Julian calendar.
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In ancient Greece, what was the dial system used to indicate time?
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The merkhet.
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What is a major difference between the Egyptian and Mayan calendars?
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The Mayan calendar included a Long Count to track longer periods.
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Which ancient European structure was used for astronomical observations and possibly timekeeping?
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Stonehenge.
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How did the Inca keep track of time without a written calendar?
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Through a sophisticated sundial system known as the 'Intihuatana.'
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What did the ancient Babylonians contribute to timekeeping?
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They divided the day into 24 hours and the hour into 60 minutes.
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What were 'temple clocks' used for in ancient Persia?
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To signal prayer times.
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How did the ancient Indian Vedic culture track time?
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Using a calendar system based on lunar months and solar years.
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