When is the next leap year?

A leap year occurs every 4 years on an even year. So 2012, 2016, 2020, 2024, 2028, 2032, 2036, 2040, 2044, 2048, 2052, 2056, 2060, 2064, 2068, etc.
The bold year above is the next occurring leap year.
The summer Olympics also occur every leap year.
In the next 4 years

when is the next leap year?