Question

Why is an extra day added to a year after 4 years? Answer in detail.

Answer 1

Explanation:

becaus every year there is all total 365 days and 6 hours and this 6 hours is added becomes a day after 4 years

Answer 2

Nearly every four years, we add an extra day to the calendar in the form of February 29, also known as Leap Day. Put simply, these additional 24 hours are built into the calendar to ensure that it stays in line with the Earth's movement around the Sun.