Uploaded April 2026 | Updated September 2026, 2 weeks ago

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Twilight Sparkle tries to help Princess Luna appreciate the traditions of Ponyville's annual Nightmare Night, though its roots in the stories of Nightmare Moon complicate her effort.

The episode's title is a play on the term "lunar eclipse", an astronomical event wherein the Moon passes through the Earth's shadow.

The Nightmare Night festival featured in this episode is analogous to modern-day observances of Halloween.