A day has 24 hours.

I will hold my birthday party on the tenth day of the month.

We are planning to start a new project.

The first day of the month is the beginning of a new month.

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

Starting a new project always excites me.

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

Tomorrow's party is already planned.

What is your schedule for tomorrow?

He tried to solve the problem all day long.