Engineer's Day in Brazil
Engineer's Day in Brazil is held on December 11. 11 December 1933 Day that the Law 23.659 regulated the Engineer, Architect and Surveyor professions. This event in the second decade of the month december is annual.
Engineer's Day in United States of America on February 22 (Week of February 22 - always the week in February that encompasses George Washington's birthday);
Engineer's Day in Iran on February 23 (This day is celebrated to respect Nasir al-Din al-Tusi, Iranian scientist);