What does 'DAY' return in date formats?

The correct response is that when using 'DAY' in date formats, it returns the full, all capitalized name of the day. This is particularly useful when you want to clearly indicate the day of the week that corresponds with a given date, especially in reports or user interfaces where clarity and emphasis on the day are important.

This formatting ensures consistency and visibility, especially when the information is presented alongside other critical data. Each day of the week can be easily identified due to its full name being fully capitalized, which sets it apart from other text and highlights its significance.

In other formats, variations may provide different case options or abbreviations, but the all-caps format specifically aids in distinguishing the day names from other elements in a data set. This is essential for readability and for designing reports that need clear delineation of information.