On this day we celebrate the birthday of King Willem-Alexander of the Kingdom of the Netherlands. An official ceremony is held in honor of HM King Willem-Alexander followed by various activities such as flea markets, kite contests, sporting events and other fun activities at different community centers.
From 1890 to 2013, the day was known as Queen's Day. On April 30th 2013, on Queen's Day, Prince Willem-Alexander succeeded his mother Beatrix and became King of the Netherlands. Consequently, from 2014 onwards the name is changed from Queen's Day to King's Day and also the date has changed from April 30th to April 27th.