Is the post office open 7-5-2013?

To determine if the post office was open on May 7, 2013, you'll need to check the specific post office's hours of operation for that date, as they can vary by location. Generally, most post offices in the United States are open during regular business hours on weekdays, but specific hours can differ. Additionally, holidays or special events might affect their hours. For precise information, contacting the post office directly or checking their website would be the best approach.