What is the difference between day's and days?

Related questions

1. Why is 17 unlucky?
2. Does 1980s need an apostrophe?
3. Why is there no 13 floor in hotels?
4. Is it two day or two days?
5. What does it mean to be born on Tuesday?
6. Why is Friday the 13th so scary?
7. Is Tuesday a bad luck day?
8. What does it mean if I was born on a Friday?
9. Why did Mother Hubbard go to the cupboard?
10. Is it Tuesdays or Tuesday's?

Tags

1. #different
2. #correct
3. #refers
4. #would
5. #second
6. #construction
7. #standard
8. #possessive
9. #option
10. #plural
11. #single
12. #start
13. #three