If you could relive one day from your past, which day would it be and why?

I want to relive one day from my past when I received engineering degree in my college. It is one of the best days of my life. It is a day when my dream of becoming Graduate or engineer comes true.

I worked hard in passing high school with good marks and later chose the subject of mathematics in intermediate board exams to do b.tech and became an engineer. I also worked hard in cleaning engineering competitive examination to get admission in engineer college and became an engineer.

So, I want to relive one day of receiving engineering degree in my college from my past days. I want to relive that day when I celebrated with my parents to clear my b.tech semester exams with good percentage and got very happy or excited when my dream comes true to become an engineer