The Pirates of the Caribbean films are estimated to be set in the mid -18th century. More specifically, they are believed to be set in the late 1740s- early 1750s. There are contradictory elements in all of the movies, probably because of the poor knowledge of British and colonial history on the part of the creators. For example, some of the period clothing worn by characters was in-vogue in the 1600s.Some of the leaders such King Ferdinand VI were not born until the early 1700s. The type of Union Jack Flag flown in some of the scenes in the film was not created until after 1800. The biggest problem that many people have with the date being assumed as the mid to late 1700s is that it contradicts many of the events taken place in the life of Queen Anne. The specific date for the film is very confusing because of this.