To put it another way, time is the way this mind perceives the infinite variety of the universe. Because the self is easily confused. By your habit of profound thought. Look deeply into your experience. Look very deeply.
Skeptical doubt is a mind game.
It has no real significance. Be serious about your life and then your small doubts will become Great Doubt. I trust dukkha. I trust transience. I trust the inevitability of the Dharma.