MONTREAL -- The world junior hockey championships are returning to Canada. Montreal and Toronto will co-host the 2015 and 2017 tournaments.

Both cities will host a preliminary round group at each event, with Toronto hosting the medal round in 2015 and Montreal hosting the medal round in 2017.

Team Canada will be based in Montreal for the round robin in 2015, and in Toronto in 2017.

This will mark the 11th and 12th times Canada has hosted the Christmas-time tournament.

It will be Toronto's debut as host while Montreal hasn't held the event since 1978.

Calgary and Edmonton were the last Canadian host cities in 2012.