An inaugural ceremony refers to a special event or function that marks the beginning or opening of something important, such as a government official's term or the initiation of a project. Full definition
Former Secretary of State Hillary Rodham Clinton and former President Clinton huddle under an umbrella during inaugural ceremonies for Virginia Gov. Terry McAuliffe in Richmond on Jan. 11. (npr.org)
Speaker after speaker at the group's official inaugural ceremony in... (citifmonline.com)
Two Shows for Frank Gehry, as His Vuitton Foundation Opens PARIS — In a cultural twofer that makes it Frank Gehry week here, the Louis Vuitton Foundation, a private cultural center and contemporary - art museum designed by Mr. Gehry, had its official inaugural ceremony on Monday, attended by the French president, François Hollande. (lesliefeely.com)