The superhero swooped in to save the day .

In my day , smartphones weren't even a thing .

I bought a tie for my dad on Father's Day.

Labor Day is a public holiday in the United States and Canada.

The officer of the day is responsible for overseeing the daily operations.

Veterans' Day is a national holiday in the United States.

Back in the day, people used to communicate through letters.

As the day went on, the weather became hotter and more humid.

Leap day is an extra day added to the calendar every four years.

I dream of visiting Shangrila one day.