USPS delivery hours are mostly the same from day to day, but there can be some variation depending on the route and volume of mail. The regular letter carrier is responsible for delivering all parcels and mail to customers. USPS delivery times can also vary depending on the type of mail being delivered. First-class mail is typically delivered within 1-3 days, while standard mail can take up to 7 days. Overall, USPS is a reliable organization with delivery times that are largely consistent from day to day. https://www.uspsinfo.com/shipping-times/
