IIHF World Junior Championship
The IIHF World Junior Championship (WJC), commonly referred to as the World Juniors, is an annual event organized by the International Ice Hockey Federation (IIHF) for national under-20 ice hockey teams from around the world. It is traditionally held in late December, ending in early January (beginning from Boxing Day to January 5).
Source: Wikipedia — IIHF World Junior Championship (CC BY-SA 4.0)