And Julius Cesar in fact outsourced his duties! He hired some priests from Egypt to fix the calendar. And it didn't work right away, because the Egyptians told

And Julius Cesar in fact outsourced his duties! He hired some priests from Egypt to fix the calendar. And it didn't work right away, because the Egyptians told the Romans to add an extra day in the fourth year, but the Romans counted inclusively so they thought it was every three years.