Black Panther had its world premiere at the Dolby Theatre in Los Angeles on January 29, 2018.[198] The premiere featured a purple carpet that was flanked by women dressed as the Dora Milaje,[199] while Coogler, cast members, and other guests wore African clothing at the request of Marvel for attendees to wear "royal attire", honoring the African setting of the film.[2][199] Ahead of the premiere screening, Coogler received an extended standing ovation before he announced the cast of the film.[199] Black Panther was released in the United Kingdom, Hong Kong, and Taiwan on February 13,[200] in South Korea on February 14,[201] and the United States on February 16.[97] In the United States, the film opened in 4,020 theaters,[194] with over 3,200 of those in 3D,[202] 404 in IMAX,[194] over 660 in premium large format, and over 200 D-Box locations. In addition, Black Panther was the first MCU film to be converted to ScreenX, a 270-degree wraparound format, that played in over 101 locations in eight countries.[202] The film opened in most markets in its first weekend of release including a "cross-nation release" in Africa, a first for a Disney film.[124][144][200] Black Panther was originally scheduled for release on November 3, 2017,[7] before moving to July 6, 2018 to accommodate Spider-Man: Homecoming (2017).[87] It was then moved to the final February date to accommodate Ant-Man and the Wasp (2018).[97] Black Panther is part of Phase Three of the MCU.[203]