Does "The restrictions were tightened by the Defence of the Realm Act of August 1914, which, along with the introduction of rationing and the censorship of the press for wartime purposes, restricted pubs' opening hours to 12 noon2:30 pm and 6:30 pm9:30 pm." contain the correct answer to "Along with the period 6:30 pm9:30 pm, what opening hours were acceptable under the Defence of the Realm Act?"
yes