This will be a very long scientific discussion! We are looking at both the origins of Halloween and the study of how Nightmare Night in the MLP:FiM universe came into existence. I suggest you prepare for a spooky realization at the darkness with us all as well as within every single pony to celebrate such a holiday.
Fiaura will also being explaining the science behind, being scared is fun, somehow. Ya know for Luna’s sake to understand her own holiday!