Persian Gulf National Day Persian Gulf National Day National Persian Gulf Day () is an official holiday in Iran that takes place on the 10th of Ordibehesht, the second month on the Iranian calendar _ usually occurring on 30 April on the Georgian calendar _ to commemorate Persian Gulf. The date coincides with the anniversary of Abbas I of Persia's successful military campaign when the Portuguese navy was driven out of the Strait of Hormuz in the Capture of Ormuz (1622). The decision was taken by the High Council of Cultural Revolution, presided over by former President Mohammad Khatami, noting that the campaign launched
Battle of the Gulf of Oman the fleet that he encountered on August 10 and 25 was the very same. Battle of the Gulf of Oman The Battle of the Gulf of Oman was a naval battle between a large Portuguese armada under Dom Fernando de Meneses and the Ottoman Indian fleet under Seydi Ali Reis. The campaign was a catastrophical failure for the Ottomans who lost all of their ships. Since the Siege of Diu in 1538, the Ottoman Empire was attempting to counter Portuguese influence in the Indian Ocean. In 1552, Ottoman admiral Piri Reis led a number of expeditions around the Arabian peninsula