Dutch host Koninginnedag celebration Published April 25, 2013 39th Air Base Wing Public Affairs INCIRLIK AIR BASE, Turkey -- Dutch personnel deployed to Incirlik in support of the NATO-led Patriot mission invited U.S. and Turkish personnel to attend a Koninginnedag, or Queen's Day, celebration at Arkadas Park April 24 here. The event included Dutch food, a touwtrekken toernooi (tug-of-war tournament), live music and a bonfire. Koninginnedag is a Dutch national holiday that is observed April 30.