The phrase "Dies Legitimns" is often spelled incorrectly as "Dies Legitimis." The correct spelling includes an "n" instead of an "m" in the final word. The pronunciation follows the International Phonetic Alphabet (IPA) transcription, with "dē-ās lə-jit-ə-məns." The phrase translates to "a legitimate day." Though not commonly used, it can be useful in legal contexts or when discussing the legitimacy of specific events or actions.