When was the anthem that Philips of Marnix likely wrote recognized as official?
Philips of Marnix, Lord of Saint-Aldegonde Philips of Marnix, Lord of Saint-Aldegonde, Lord of West-Souburg (Dutch: Filips van Marnix, heer van Sint-Aldegonde, heer van West-Souburg, French: Philippe de Marnix, seigneur de Sainte-Aldegonde; Brussels, 7 March/20 July 1540 – Leiden, 15 December 1598) was a Flemish and Dutch writer and statesman, and the probable author of the text of the Dutch national anthem, the "Wilhelmus".
National Anthem of Saudi Arabia The National Anthem of the Kingdom of Saudi Arabia (Arabic: النشيد الوطني السعودي‎ ‎ ) Hasten (Arabic: سارعي‎ ‎ ) was first officially adopted in 1950 with no lyrics and then again in 1984 with lyrics. The original composition was by Abdul-Rahman al-Khateeb (عبد الرحمن الخطيب) in 1947 and the brass instrumental version was later arranged by Seraj Omar (سراج عمر). The lyrics were written by Ibrahim Khafaji (إبراهيم خفاجي).