What One reform of Julius Caesar's still in effect today is the?

One significant reform of Julius Caesar that is still in effect today is the implementation of the Julian calendar. Introduced in 46 BC, this calendar standardized the year to 365 days, with a leap year every four years to account for the extra quarter day. Although it has undergone modifications, the Julian calendar laid the groundwork for the Gregorian calendar, which is widely used around the world today. This reform improved timekeeping and helped structure the agricultural and civic life of Rome and beyond.