Definition & Meaning of "save the day"in English

What is the origin of the idiom "save the day" and when to use it?

The idiom "save the day" is a commonly used expression in English without a specific historical origin. It is used to describe a situation where someone successfully rescues or resolves a problematic or challenging scenario, often at the last minute, preventing potential disaster or failure. This idiom emphasizes the idea of a timely intervention or act of heroism to ensure a positive outcome.