Passage: On 3 April 2011, the engineer and businessman Naguib Sawiris, and a group of intellectuals and political activists announced the establishment of the party and declared the program, the objectives and the basic principles of the party. Other prominent party members include the Egyptian American scientist Farouk El-Baz, the Egyptian Arabic poet Ahmed Fouad Negm, the writer Gamal El-Ghitani, and the telecommunications entrepreneur Khaled Bichara.In July 2011, infighting emerged within the party. An internal faction called the "Group of 17" accused the national leadership of undemocratic methods in choosing local leaders in the Damietta Governorate and of tolerating former members of the National Democratic Party, the ruling party of the toppled Mubarak regime, within the ranks of the Free Egyptians Party. Five of the dissidents have been excluded from the party, and have been denoted as "troublemakers" by party officials. Nevertheless, in August of the same year, the new party reported to have 100,000 members.

Question: When was the party's establishment announced?
3 April 2011