Sidereal days are the time it takes for a planet to complete one rotation relative to the stars.

There were many skier days last winter.

The school organizes speech days every year to showcase the students' public speaking skills.

I had the most amazing stellar days during my vacation.

The tide days are getting longer.

Victory Days are celebrated with parades and fireworks.

I have a lot of laundry to do on washing days.

I have been looking forward to the double days sale at the mall.

I always feel sluggish during the fat days of the holiday season.

The canicular days were unbearably hot.