replacementday

noun
UK /rɪˈpleɪsmənt deɪ/
US /rɪˈpleɪsmənt deɪ/

A replacement day is a day you get instead of the one you missed.

Because it rained on sports day, we had a replacement day the next week.


OTHER MEANINGS

2. A day when someone takes over another person's job or turn.

Friday was a replacement day for the teacher who was sick.

3. A day used in place of a holiday that falls on a weekend.

The office gave everyone a replacement day off after the holiday.

4. A spare day kept free in case plans change.

We saved a replacement day at the end of the trip for bad weather.