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
Piracy in the Persian Gulf bin Muhammad Al Qasimi argues in his book "The Myth of Piracy in the Gulf" that the allegations of piracy were simply excuses used by the British to impose imperialism. Piratical activities were common in the Persian Gulf from the late 18th century to the mid 19th century, particularly in the area known as the "Pirate Coast" which spanned from modern-day Qatar to Oman. Piracy was alleviated from 1820 with the signing of the General Maritime Treaty, cemented in 1853 by the Treaty of Maritime Peace in Perpetuity, after which the Pirate Coast began to be known by the British