The largest international winter sports competitions which are held once in 4 years under the auspices of the International Olympic Committee. The winter Olympic Games began to be held since 1924 as addition to summer Games. Some winter sports were included in the summer Olympic Games even earlier, in 1908 and 1920. From 1924 to 1992 the winter Olympic Games were held in the same years, as summer. Since 1994 the winter Olympic Games are held after summer with shift in 2 years.