Every 4 years.
Leap years occur every four years.
four
Leap years occur every 4 years.
2 years after every winter olympics.
There are 366 days
Summer Olympics occur every four years.
There is a winter Olympics every four years.
every 4 years
From 1896-1992 there were 24 leap years.
There have been six leap years in the last 25.
the summer olyimpics occur every 2 years
A leap year occurs every four years.