September 30th is International Translation Day, celebrated since 1953 on the Feast of St. Jerome, the Bible-translating saint and, hence, the patron saint of translation.
Last year the UN even officially declared it such, recognizing “the role of language professionals in connecting nations and fostering peace, understanding and development.”
Recognition is nice but I think we need more fun traditions to make it a proper holiday. Maybe competitive games like trying to confuse Google Translate by deliberately writing sentences that it gets humorously wrong? Or is that too nerdy?