Sentence examples for days are over from inspiring English sources

The phrase "days are over" is grammatically correct and can be used in written English.
It is typically used to indicate that a certain period of time has passed and things have changed. For example, "The days are over when students could afford to go to college without taking out loans." Another example could be, "Her reckless behavior caused her to lose her job, but her days of partying and showing up late are over."