Indonesia: Public Holiday (Regional)By kpsadmin2018 / August 9, 2018 Calendar When: April 19, 2017 all-day 2017-04-19T00:00:00+08:00 2017-04-20T00:00:00+08:00 Where: Indonesia Jakarta. For regional elections. Jakarta. To allow voters to cast ballots in the Jakarta gubernatorial runoff elections. A regional holiday in Jakarta. Information provided by www.officeholidays.com