Apart from the Second World War period the Winter Olympics were held every four years, a few months before the summer Olympics. But in 1986 the IOC changed the schedule so that the summer and winter games would be held in different years. Thus, for the only time in history, the Lillehammer (Norway) Games took place just two years after the previous Winter Olympics which were held in Alvertville, France. The Winter Olympics were interruped only for the Second World War in history.