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

Law on Elections of the Parliament/Oliy Majlis (2012)

Article 49
Publication of results of elections of deputies of the Legislative Chamber

The Central Election Commission shall within ten days publish in press an announcement on election results and a list of elected deputies of the Legislative Chamber indicating their family names, first names, patronymics, years of birth, party affiliation, positions occupied (professions), places of work and residence, numbers and names of electoral districts.

Certified results of the 2016 Presidential Elections are available here.