Tacna is located in Peru (Provincia de Tacna) and time zone America/Lima.
Places nearby are Arica, Ilabaya and Pacocha.
Arequipa is 205 km away, Lima is 852 km away and Callao is 855 km away as the crow flies.
Distances from Tacna to the most important cities in Peru and the world.
-18.0146500°
-70.2536200°
Former province of Chile
https://en.wikipedia.org/wiki/Tacna_Province_(Chile)Part of the War of the Pacific (1879–1880)
https://en.wikipedia.org/wiki/Tacna_and_Arica_campaign