Idiom of the day :- Sign of the times

Usage, examples and definition of the Idiom :-

Don’t look for signs to direct you to a sign of the times for this type of ‘sign’ isn’t a sign but a characteristic of the times in which we live. ‘I used to be able to swim and fish here,’ Kevin sighed. ‘I can’t now, though. The water’s polluted and there aren’t any more fish. It’s a sign of the times.