What is a notable feature of the Gregorian calendar compared to the Julian calendar?

The notable feature of the Gregorian calendar compared to the Julian calendar is that every century is not a leap year unless it is divisible by 400. This adjustment was made to correct the overcompensation that occurred in the Julian calendar, which added a leap year every four years without exceptions. As a result, the Julian calendar year was approximately 365.25 days, while the solar year is about 365.2422 days. Over time, this discrepancy caused the dates of the seasons to drift.

In the Gregorian calendar, leap years occur every 4 years, but for years that are divisible by 100, they are not leap years unless they are also divisible by 400. Thus, the year 2000 was a leap year, but the years 1700, 1800, and 1900 were not. This system helps ensure that the calendar remains more aligned with the equinoxes and solstices, thus maintaining seasonal consistency over the long term.