The arena that hosted the 2017 "Billboard" Music Awards opened  on what date?
T-Mobile Arena T-Mobile Arena is a multi-use indoor arena on the Las Vegas Strip in Paradise, Nevada. Opened on April 6, 2016, the arena is a joint venture between MGM Resorts International and the Anschutz Entertainment Group.
2017 Manchester Arena bombing The 2017 Manchester Arena bombing was an Islamic terrorist attack in Manchester, United Kingdom. On 22 May 2017 a shrapnel-laden homemade bomb was detonated as people were leaving Manchester Arena following a concert by the American singer Ariana Grande. Twenty-three people were killed, including the attacker, and 250 were injured.