State Opening of Parliament - Prince Charles, The Prince of Wales arrives at The Houses of Parliament, Sovereign's Entrance at Victoria Tower on 21 June 2017. . The State Opening of Parliament on Wednesday 21 June marks the formal start of the parliamentary year and the Queen's Speech sets out the government’s agenda for the 2017-18 session, outlining proposed policies and legislation. Due to the revised calendar, the State Opening of Parliament took place place with reduced ceremonial elements. This change arose due to the unique circumstances of the general election. .