It has been one thousand years since the sun set. A thousand years since Luna's elder sister went mad with power and became Solar Flare. A thousand years since Luna was overwhelmed by jealousy and became Nightmare Moon. A thousand years, in either case, since the Elements of Harmony refused to obey their bearer.

Most ponies go their whole lives without ever seeing the sun, and those few who do are terrified by how bright its light burns.

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