Question

why after 4 years 1 day is only added to February not other month ?​

Answer 1

Answer:

Due to leap year

and February is single month with 28 days

Answer 2

Answer:

February 29 is a date that usually occurs every four years, and is called leap day. This day is added to the calendar in leap years as a corrective measure, because the Earth does not orbit the sun in precisely 365 days. The Gregorian calendar is a modification of the Julian calendar first used by the Romans.

i think it is helpful for you !

Explanation: