Leap years are added to the calendar every four years primarily to synchronize the calendar year with which astronomical cycle?
Show answer
solar year
A solar year is actually about 365.24 days long, not exactly 365. Without adding an extra day every four years, our seasons would eventually drift out of alignment with the months on the calendar.
Also asked as:
- To keep the calendar synchronized with the seasons, leap years are used to account for the length of what astronomical cycle?