1 January – Croatia adopted the euro and became the 20th member state of the eurozone.[1] This was the first enlargement of the monetary union since Lithuania's entry in 2015. Croatia also joined the Schengen Area and became its 27th member. This was the first enlargement of the Schengen Area since Liechtenstein's entry in 2011.[2]
Deaths
January
1 January – Ferdinand Zovko, bariton and university professor (b. 1943).