From a Google search - 10am to 5pm
This is now a year later but I thought I'd make a post for future reference. They are indeed closed on Sunday nearly all the time; however, the Sundays that fall *between* Thanksgiving and Christmas are when the store is historically open from 10:00 AM until 5:00 PM. I am making this post on Sunday, December 29th, 2019 and they were closed today. Dates fell such that they were otherwise open for the other 4 Sundays (1, 8, 15, 22). The recording you hear initially when calling the store is kept up to date VERY regularly. The website is also kept up to date but I'd rely on the phone recording above all else.
I don't think they are open. Check their website.
I think they're usually closed, but have "holiday season" hours right now.
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