The world can change immensely in a thousand years. Radical ideas can spread from one end of the world to the other, empires can rise from nothing and crumble to dust, and new inventions can turn everyday life upside down. Also, ponies can completely forget about you.
Luna is completely baffled to find out her place in history has been omitted entirely. But it's not a problem that couldn't be solved with coffee. Lots and lots of coffee. And necromancy. Shady, shady necromancy.
And what's it to anyone else if the Princess of the Night ends up with a skeleton in her closet that is just a little more literal than everypony else's? Especially when Berry Punch is going to be blamed for it anyway.
Happy belated International Coffee Day everyone!