may 13, 1007 - The Golden Oak Library is destroyed. Twilight Sparkle obtains her key to the Chest of Harmony. Twilight and her friends unlock the Chest of Harmony and obtain Rainbow Power. With this power, they defeat Lord Tirek and imprison him in Tartarus again. The Castle of Friendship appears in Ponyville
Added to timeline:
Date:
may 13, 1007
Now
~ 1018 years ago