First government of Felipe González
The first government of Felipe González was formed on 3 December 1982, following the latter's election as prime minister of Spain by the Congress of Deputies on 1 December and his swearing-in on 2 December, as a result of the Spanish Socialist Workers' Party (PSOE) emerging as the largest parliamentary force at the 1982 Spanish general election. It succeeded the Calvo-Sotelo government and was the government of Spain from 3 December 1982 to 26 July 1986, a total of 1,331 days, or 3 years, 7 months and 23 days.
Source: Wikipedia — First government of Felipe González (CC BY-SA 4.0)