I would choose a day that reminded me of my childhood that felt peaceful and childlike. A warm wind, the smell of flowers, a picnic. It would be with the person who loved me and made me feel right with the world. maybe even the sounds of the beach and children laughing, the waves crashing. No rushing, no feeling tense just at ease with life and everything is fine, if I had always been blind I would not know the sights of my life but I imagine your other senses would be just as alert as a sighted person, You would experience the same feelings
I would choose a warm sunny day and have a picnic in a meadow, The sound of wood Pigeons cooing and bumblebees buzzing. I would sit on a blanket and watch my life.