It took place simultaneously with the naval battle at Artemisium, in August or September 480 BC, at the narrow coastal pass of Thermopylae ("The Hot Gates").
Pertempuran ini terjadi berbarengan dengan pertempuran laut di Artemision, pada Agustus atau September 480 SM, di celah pesisir sempit Thermopylae ('Gerbang Panas').