So, make your list and schedule for 2022 according to this list. On all these listed days USPS will not accept or deliver any mail or package. So, from the above table, you can see there are a total of ten days when the US postal workers and post offices will not accept or deliver any delivery. *LetterStream can still mail your letters on these special USPS holidays. 26 (observed because Dec.25 falls on a Sunday)
USPS HOLIDAYS 2022: All You Need to Know.