Nation What’s open and closed the day after Christmas? Many banks, post offices still closed on Monday December 22, 2022December 26, 2022 Natalie Neysa Alund, USA TODAY Comments Off on What’s open and closed the day after Christmas? Many banks, post offices still closed on Monday Many banks and post offices will not be open on Dec. 26, the day after Christmas. Some business observe the holiday on Monday this year.