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Around the globe, デイ (Day , Dae , Dey , and others...) is a common gender-neutral given name. The first name デイ is characteristic of Israel, where it is quite a common boy's name, Paraguay, where it is quite a rare feminine name, and Mongolia. Measured by absolute frequency, it is the most numerous in India, Indonesia, and Israel. Much more frequently, デイ is the last name as well as the forename.
デイ is also a name for the fictitious and mythical characters: .