The Iran hostage crisis (Persian: بحران گروگانگیری سفارت آمریکا) began on November 4, 1979, when 66 Americans, including diplomats and other civilian personnel, were taken hostage at the Embassy of the United States in Tehran, with 52 of them being held until January 20, 1981.
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The 47th anniversary falls on November 4, 2026.