This BTN news was about leap year, when it happens and also how many days it takes for the earth to go around the sun.
The earth takes 365 days to go around the sun.
Leap year is every four years.
The next leap year will be in 2020.
We understand that leap year is a year to have fun in.
We also understand about leap year.
How did they make leap year?
Written by Ben, Adam And Adrian.