Christmas is the worst time, they practically close down like a factory does. Christmas Eve? No one needs money at Christmas we'll close; the 23rd? No that's the eve of Christmas Eve we can't work then.
I'd imagine the OP has found some solution, it's been 6 years now.Here you can view a list of banks open on Sunday: https://banks-nearme.com/banks-open-on-sunday-near-me/