four
Every 4 years.
Leap years occur every four years.
Leap years occur every 4 years.
2 years after every winter olympics.
Summer Olympics occur every four years.
There is a winter Olympics every four years.
every 4 years
the summer olyimpics occur every 2 years
A leap year occurs every four years.
Every 4 years except that centuries are nut leap years unless they are divisible by 400.
Olympics occur how many years
A leap year occurs every four years. The day when a leap year hasoccurred is on February 29.