Navy Day in Iran
Navy Day in Iran is held on November 28. This event in the third decade of the month November is annual. 
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November 28 is a Navy Day in Iran. It commemorates Operation Morvarid of 1980, a major Iranian Navy victory during the Iran–Iraq War. Iran has two independent naval forces: the Islamic Republic of Iran Navy (IRIN), whose existence predates Iran’s 1979 Revolution, and the Islamic Revolutionary Guard Corps Navy (IRGCN), which evolved separately in midst of the Iran-Iraq war (1985).
Both the IRIN and the IRGCN continue to operate as distinct services, with parallel chains of command. Despite the fact that both forces have as their primary mission to protect Iran’s maritime interests and defend the Islamic Republic from sea-based threats, deep-seated institutional rivalries between the IRIN and the IRGCN mask even deeper structural and cultural differences between the two services.
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