The timeline also lists the dates of notable events in the series, particularly the main periods where the protagonists enter Narnia. Digory and Polly entering Narnia in 1900, and the Pevensies twice enter Narnia in 1940 and 1941. This corresponds to the Pevensies arrival in Narnia in the Narnian year 1000, where Aslan sacrifices himself, and Peter becomes Narnia's new ruler. According to the timeline, the Pevensies vanish out of Narnia while hunting the White Stag in the Narnian year 1015, one year after King Peter carries out a successful raid on the Northern Giants, and King Lune of Archenland defeats an attack by Prince Rabadash. Lewis also gives the AD 1942 as the year that both "The Voyage of the Dawn Treader" and "The Silver Chair" take place. This corresponds to Caspian X's voyage to the end of the World in 2306–2307, Narnian time.