Every year, on 26 September Europeans celebrate the European Day of Languages. This day is an opportunity to celebrate linguistic diversity, plurilingualism, and lifelong language learning.
At the initiative of the Council of Europe in Strasbourg, the European Day of Languages has been celebrated every year since 2001.

– The European Day of Languages official website
– Origins of the European Day of Languages

Take these European Day of Languages quizzes :
– Quiz (language quiz)