Initial theatrical run The film received steady attendance after opening in North America on Friday, December 19, 1997. By the end of that same weekend, theaters were beginning to sell out. The film earned $8,658,814 on its opening day and $28,638,131 over the opening weekend from 2,674 theaters, averaging to about $10,710 per venue, and ranking number one at the box office, ahead of the eighteenth James Bond film, Tomorrow Never Dies. By New Years Day, Titanic had made over $120 million, had increased in popularity and theaters continued to sell out. Its highest grossing single day was Saturday, February 14, 1998, on which it earned $13,048,711, more than eight weeks after its North American debut. It stayed at number one for 15 consecutive weeks in North America, a record for any film. The film stayed in theaters in North America for almost 10 months before finally closing on Thursday, October 1, 1998 with a final domestic gross of $600,788,188. Outside North America, the film made double its North American gross, generating $1,242,413,080 and accumulating a grand total of $1,843,201,268 worldwide from its initial theatrical run.
Question: How many weeks after Titanic's highest grossing day did it stay at number one at the box office?
Answer: 7