How often does the UEFA Champions League occur?
UEFA European Championship
The UEFA European Championship (known informally as the Euros) is the primary association football competition contested by the senior men's national teams of the members of the Union of European Football Associations (UEFA), determining the continental champion of Europe. Held every four years since 1960, in the even-numbered year between World Cup tournaments, it was originally called the UEFA European Nations' Cup, changing to the current name in 1968. Starting with the 1996 tournament, specific championships are often referred to in the form "UEFA Euro [year]"; this format has since been retroactively applied to earlier tournaments.
2018–19 UEFA Champions League
The youth teams of the clubs that qualify for the group stage also participate in the 2018–19 UEFA Youth League on the same matchdays, where they compete in the UEFA Champions League Path (the youth domestic champions of the top 32 associations compete in a separate Domestic Champions Path until the play-offs).