What time is it in Salta?

Argentina spans 12 time zones, so the answer depends on where in it you mean. Salta covers salta (sa, lp, nq, rn) and is on the same clock as Buenos Aires, though the two are separate zones in the IANA database and can diverge when daylight saving rules differ.

Salta does not observe daylight saving, so its offset from UTC never moves. Its relationship to places that do change shifts twice a year instead.