Persian Gulf National Day is an official holiday in Iran observed on the 29th or 30th of April, that marks the anniversary of forcing out the Portuguese navy of the Strait of Hormuz in the Capture of Ormuz (1622) and is 241,000 square kilometers, 990 km length and with a maximum of about 340 km to a minimum of 55 km width located in the Strait of Hormuz. 101/221