The arena that hosted the 2017 "Billboard" Music Awards opened  on what date?
2017 Billboard Music Awards The 2017 "Billboard" Music Awards was held at the T-Mobile Arena in Las Vegas on May 21, 2017. The list of nominees was announced on April 10, 2017. Non-televised awards were announced on "Billboard" website the same day as the main ceremony.
Washington Coliseum The Washington Coliseum, formerly Uline Arena, is an indoor arena in Washington, D.C. located at 1132, 1140, and 1146 3rd Street, Northeast, Washington, D.C. It was the site of the first concert by The Beatles in the United States.