Among its first-day totals Friday was $14.8 million in Great Britain, which Warner Bros. reported was the biggest single day ever for a movie. The first 3-D film in the series, “Deathly Hallows: Part 2” benefited from the higher price theaters charge for 3-D tickets, which cost a few dollars more than 2-D. In a single day, “Deathly Hallows: Part 2” took in more money than four of the previous seven “Harry Potter” films did over their entire opening weekends. The finale of the “Harry Potter” saga also set a record for midnight screenings with $43.5 million. That topped “The Twilight Saga: Eclipse,” which pulled in about $30 million in its first midnight shows last year. Box-office tracker Hollywood.com projected Saturday that “Deathly Hallows: Part 2” also could break the opening-weekend record of $158.4 million domestically held by “The Dark Knight.”