The movie series 'How to Train Your Dragon' is set in a fictional Viking world during the early Middle Ages, particularly inspired by Norse culture and legends. While there is no exact year provided in the films, the setting suggests an era similar to the 8th to 10th centuries AD. This time frame is characterized by the presence of ships, dragons, and a tribal society, which encapsulates the adventurous spirit and themes of the series.
In the films, particularly in the first installment released in 2010, the story revolves around Hiccup, a young Viking who befriends a dragon named Toothless. The relationship between humans and dragons forms the core of the series, leading to an exploration of themes such as acceptance, understanding, and companionship.
Overall, while we don't have a precise year documented, the time period indicates a fantastical version of Viking Age society, rich with adventure and mythology.