Question

Why do we get leap year once in 4 years

Answer 1

Blame Earth's orbit around the sun, which takes approximately 365.25 days. It's that 0.25 that creates the need for a leap year every four years. During a leap year, a leap day is added to the calendar to slow down and synchronize the calendar year with the seasons.

Answer 2

Answer:

because every year has 365 ¹/2

so four ¹/2 add up and in leap year we will have 366days