I checked the website and saw the hours they are open, but I didn't see anything about days of operation. Are they open on Sundays?

Yes they are

We are open 7 days a week. For the remainder of the month we are still on Summer hours, accepting cars from 9 AM- 5 PM and closing completely at 6. October kicks off our Winter hours, at which time we will accept cars from 9-4 and close completely at 5.

Yes. They open at 8am

Yes

Thanks y'all