write short note on leap year .
Answers
Answer:
In an ordinary year, if you were to count all the days in a calendar from January to December, you’d count 365 days. But approximately every four years, February has 29 days instead of 28. So, there are 366 days in the year. This is called a leap year.
A year is the amount of time it takes a planet to orbit its star one time. A day is the amount of time it takes a planet to finish one rotation on its axis.It takes Earth approximately 365 days and 6 hours to orbit the Sun. It takes Earth approximately 24 hours — 1 day — to rotate on its axis. So, our year is not an exact number of days.
Because of that, most years, we round the days in a year down to 365. However, that leftover piece of a day doesn’t disappear. To make sure we count that extra part of a day, we add one day to the calendar approximately every four years. Here’s a table to show how it works:
Year Days in Year Leap Year?
2017 365 No
2018 365 No
2019 365 No
2020 366 Yes
Because we’ve subtracted approximately 6 hours — or ¼ of a day — from 2017, 2018 and 2019, we have to make up that time in 2020. That’s why we have leap day!