epagomenous

Example:The epagomenal days were added every four years to align the lunar-based Egyptian calendar with the solar year.

Definition:Additional days inserted into certain months or at the end of certain years of some calendars to reconcile the civil year with the solar year, especially in the Alexandrian calendar.

Example:Ancient Greek calendars included extra epagomenous days every four years to keep their system in tune with the solar year.

Definition:Additional days that were added to the calendar year to synchronize it with the astronomical year, ensuring accuracy for agricultural and religious purposes.

Example:The intercalary epagomenal period was an essential part of the ancient Egyptian calendar, adding several days at the end of certain months.

Definition:A brief period during which additional days are inserted into the calendar to align the calendar year with the solar year, often used in ancient Egyptian and Babylonian calendars.