The eighth day of every month is my birthday.

Our picnic is scheduled for the ninth.

Our monthly meeting is scheduled for the seventh day of the month.

When the sun rises, a new day begins.

He thinks that war is a necessary evil.

Do you understand the necessity of this project?

That information is unnecessary.

That information is completely unnecessary.

This sunshade is useful for blocking the strong sunlight.

I take a walk in the park every day.