NO PURCHASE NECESSARY. Void where prohibited. Legal residents of the 48 contiguous US or DC who are 18 or older. Begins February 5, 2018 at 12:00 A.M. PT and ends February 28, 2018 at 11:59 P.M. PT. Limit 1 entry per person. To enter, and for Official Rules, odds, and prize details, visit nbc.com/worldofdancesweeps. Sponsors: NBC Entertainment, a division of NBC West, LLC, and NBCUniversal Media, LLC.