Question

When do we observe a leap year

Answer 1

A year has 365 days and a leap year has 366 days.

This one day extra is 29the February.

A leap year is observed after every four years.

Mostly the year that is divisible by 4 is a leap year.

For ex- 2016 is divisible by 4, hence leap year.

2017 is not divisible by 4, so its the normal year.

Answer 2

we observe a leap year in the year after 4 years the extra day comes in February 29