PPT Slide

Julius Caesar’s calendar, on the other hand, was too long by

365.25 - 365.2422 = 0.0078 days

Between 46 B.C. and 1582, the accumulated error amounted to

(0.0078 days/year) ? (1,628 years) ~ 13* days

*(The difference between 13 and 10 arises from the Precession of the Equinoxes.)

Can you estimate the accuracy of Caesar’s calendar?

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