Epagomenal Days (Epagomenals)

Epagomenal Days are the days added to a calendar year to account for the fact that the Earth's orbit around the Sun takes approximately 365.24 days. In the Gregorian calendar, these extra days are added as February 29th during leap years, making the year 366 days long. Their purpose is to keep the calendar aligned with the Earth's solar year, ensuring seasons and dates stay consistent over time. The term "epagomenal" comes from Greek, meaning "upon the days," highlighting their role as additional days inserted to maintain calendar accuracy.