This year's show will span multiple time zones, with celebrations kicking off in New York and continuing through Las Vegas, Chicago, Puerto Rico and beyond. In Chicago, GRAMMY®-winning independent innovator, humanitarian and proud hometown native Chance the Rapper joins the broadcast as co-host to help welcome in the new year from the Midwest and lead the live Central Time Zone countdown. In Las Vegas, NFL legend Rob Gronkowski returns alongside multihyphenate performer and presenter Julianne Hough, who makes her 'Dick Clark's New Year's Rockin' Eve' co-hosting debut as they take over the 'Entertainment Capital of the World.' Details for the Puerto Rico celebration will be announced soon.