He was studying all day.

Old English is a language that was spoken in England from the 5th to the 12th century.

Today is my birthday.

He tried to solve the problem all day long.

Our store has a regular day off every Monday.

Our project is scheduled to be completed on the twentieth day of the month.

The history of the British Empire occupies a particularly important part in world history.

Day after day, he continued to strive to solve the problem.

When is the due date of your credit card?

I often spend time with my family on New Year's Eve.