In the last national election, how many days did it take for the EMB to announce certified 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 20 March, the NCEO released the official results of the Chamber of Deputies elections, confirming the preliminary results. Newly-elected MPs received their mandates on 23 March.