In the last national election, how many days did it take for the EMB to establish final results?

Italy, ODIHR Election Assessment Mission Final Report, Parliamentary Elections, 4 March 2018, ‘ELECTION DAY AND POST-ELECTION DEVELOPMENTS, PP-17-18’, accessed 1 November 2018

On 4 March, 61,552 polling stations opened at 7:00 and closed at 23:00. The count of the votes cast in Italy was concluded on 20 March. The system of forwarding the results by PEOs to the municipalities, the tabulation and consequent transmission of the data to the prefectures and further to the MoI allowed for the preliminary unofficial results to be published on 6 March.