Nomination of the first Polish envoy to Belgium (Władysław Sobański): 24/5/1919, Information provided by Poland.
Establishment of diplomatic relations: 20/6/1919, Information provided by Belgium.
Presentation of credentials of the first Belgian envoy to Poland (Max van Ypercele de Strihou) - Establishment of diplomatic relations: 28/7/1919, Information provided by Poland.
Signing a credentials of the first Polish envoy to Belgium (Władysław Sobański): 14/8/1919, Information provided by Poland.
Presentation of credentials of the firstPolish envoy to Belgium (Władysław Sobański): 29/8/1919, Information provided by Poland.
Re-establishment of diplomatic relations - the Belgian government, in response to the Polish note of 1945/6/30, recognized the new government and proposed establishing diplomatic relations: 11/7/1945, Information provided by Poland.
Presentation of credentials of the Belgian envoy to Poland (André Wendelen): 29/8/1945, Information provided by Poland.
Polish charge d’affaires (Edward Bartol) submitted letters of introduction to the Belgian Ministry of Foreign Affairs in Brussels: 1/12/1945, Information provided by Poland.