Dear aspirant,

Well it’s possible that your admit card showing the exam date as 25th May is due to a rescheduling or technical issue. If you're referring to an entrance exam or your college exam then, sometimes exams are held in multiple phases, and students are allotted different dates based on subjects, centers, or other logistics. If your actual exam is on 8th June, but the admit card says 25th May, double check your application form and check official notifications from your college's or entrance exam's websites. There might have been a rescheduling, or you may have received the wrong admit card by mistake . It's best to contact the examination authority and convey them your problem. They may be able to help you.

Good luck!