After half of the Moon was destroyed by the Space Colony ARK's Chaos Emerald-powered Eclipse Cannon, Dr. Eggman, while trying to convince everyone that he had changed his evil ways, offered to repair the damage done by launching a mini-missile which replaced the missing half of the moon with a self-replicating metallic half in order to return the moon to its original shape, creating the Egg Moon. This, however, caused the moon to be placed in a solar eclipse on New Year's Day at sunrise.