The idea of one "leap day" every four years was introduced into the calendar by
A) the ancient Babylonians.
B) the Greeks.
C) Julius Caesar.
D) Pope Gregory XIII.

Name: The idea of one "leap day" every four years was introduced into the calendar by A) the ancient Babylonians. B) the Greeks. C) Julius Caesar. D) Pope Gregory XIII.
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Question

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Julius Caesar introduced the idea of adding a leap day every four years in the Julian calendar to correct for the solar year's actual length of approximately 365.25 days.

The Idea of One "Leap Day" Every Four Years Was