Yep I’d at least go back to when folks realized that there was only 24 hours in a day and no matter what time the clock says you still have the same hours of daylight and dark
Since we’re time traveling, Id set it back to the 1920/30’s. Ive always wished I was born in that era. I would have gotten to see a lot of neat things. And I sure as the world would have made better life choices than I did with this life. But I aint God….