The Battle of Maritsa, also known as the Battle of Chernomen (Serbian: Marička bitka / Маричка битка; Turkish: Çirmen Muharebesi, İkinci Meriç Muharebesi; "Second Battle of Maritsa"), was fought on 26 September 1371 near the Maritsa River, close to the village of Chernomen (present-day Ormenio, Greece).
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The 656th anniversary falls on September 26, 2027.