Time is only an idea. There is only the Reality. Whatever you think it is, it looks like that. If you call it time, it is time. If you call it existence, it is existence, and so on. After calling it time, you divide it into days and nights, months, years, hours, minutes, etc. Time is immaterial for the Path of Knowledge.
Just as Darwin discovered the law of development of organic nature, so Marx discovered the law of development of human history: the simple fact, hitherto concealed by an overgrowth of ideology, that mankind must first of all eat, drink, have shelter and clothing, before it can pursue politics, science, art, religion, etc.