IIHF World U18 Championship
The IIHF U18 World Championship is an annual event organized by the International Ice Hockey Federation for national under-18 ice hockey teams from around the world. The tournament is usually played in April and is organized according to a system similar to the Ice Hockey World Championships and the IIHF World Junior Championship.
Source: Wikipedia — IIHF World U18 Championship (CC BY-SA 4.0)