All major banks in the United States are closed on Thanksgiving Day and observe a half-day on Black Friday. Thanksgiving is celebrated on the 4th Thursday of November. Thanksgiving is a federally recognized holiday where almost all businesses shut their doors to let their employees celebrate. This includes all schools, government offices businesses are closed for the day. The US Stock market is closed on Thanksgiving and has an earlier closure on black Friday the following day at 1 pm.
Even local branches that set their own hours and closures we could not find a single bank that is open on Thanksgiving.