– In Marshal F. Foch’s train wagon, in the vicinity of the Rethondes railway station near Compiègne, an armistice between the Entente and Germany, marking the end of military actions during the Great War, was signed. According to one of its provisions, the Germans were to leave the territory which had previously been part of Austria-Hungary and Russia. The document said nothing about the territories of the former Prussian Partition.

– The Regency Council in Warsaw gave power to Józef Piłsudski.

– The Worker and Soldier Council in Poznań convened a meeting, during which it removed Ernst Wilms from the position of Upper Mayor of the City. Ernst Wilms officially resigned the following day. The first Polish Upper Mayor of Poznań was the lawyer Jarogniew Drwęski.

– A Worker Council was formed in Poznań. It was composed of six members of the Citizens’ Committee and five social democrats, 10 Poles and 1 German in total. The Worker Council was merged with the Soldier Council, establishing the Executive Division of the Worker and Soldier Council in Poznań, based on national parity, which comprised 11 members from each of the Councils. Worker and Soldier Councils were formed in the smaller towns of Greater Poland, Pomerania Vistula and Silesia.

– The Citizens’ Committee was transformed into the People’s Council led by Czesław Meissner.

– In Poznań, the Council of Eleven of the Polish Military Organisation of the Prussian Partition, which was composed of smaller conspiratorial groups of Poles, was formed Mieczysław Andrzejewski became its Commandant. The organisation had approximately 100 members. Attacks on German inspection posts and warehouses were carried out, which provided them with a basis for accusations of seeking the breakout of an uprising without waiting for international settlements concerning the fate of the Poznań Province.

– Professor Heliodor Święcicki, President of the Poznań Society of Friends of Arts and Sciences, initiated the foundation of the Poznań University's Organisational Committee.