Short answer: No. Post offices and regular mail delivery are typically suspended on Veterans Day (a federal holiday in the U.S.), including the Postal Service not delivering mail that day. Only special services like Priority Mail Express may still be delivered, depending on USPS guidance. Details:

• USPS: All post offices closed; regular mail not delivered on Veterans Day. Priority Mail Express may be delivered in some cases. Regular services resume the next business day. [USPS guidance common practice for federal holidays; see USPS announcements for the specific year]
• Banks and many businesses may also observe the holiday, so hours vary.

If you’d like, I can pull up the latest official USPS notice for this year and summarize the exact delivery status and any exceptions.