Would you add an apostrophe to doctors appointment?

You have a doctors appointment at 11:15 a.m. on Thursday.

 

You have a doctor's appointment at 11.15 a.m. on Thursday.

doctor's

Step-by-step explanation

doctor's

The right place to add an apostrophe would be between letter r and s on the word doctors. This is because the sentence is in singular form. This is evident with the use of article 'a'. When in singular form, the apostrophe should be put after the noun and before letter "s" to show that he appointment was with one doctor.

If however the apostrophe was put after the letter 's' in the word doctor, it would signify plural, that is you have an appointment with several doctors. This would not be right in this particular sentence as the appointment was with one doctor.