Hi, I am an international student from India, and I am applying to Harvard on REA, and I wanted to ask you guys: does Harvard give interviews in India, and how does it work, like date and location selection?
Yes, but not everybody gets one.
If they are able to schedule one for you, the interviewer will contact you to arrange the specifics.
https://college.harvard.edu/admissions/application-process/what-we-look/interviews