Universe 51: Tannhäuser Wars soundtrack releases on May 4th
8 A.M. PDT (California)
11 A.M. EST (New York, Florida)
4 P.M. BST (London, Lisbon)
1 A.M. AEST (Sydney - this is May 5th)
Universe 51: Tannhäuser Wars OST
Source: Steam Community (opens in a new tab)