How long do it take regular mail if something mailed out on Friday?

Regular mail delivery times can vary based on the destination and the postal service used. In the United States, for example, first-class mail typically takes 1-3 business days. If something is mailed out on a Friday, it may arrive between Monday and Wednesday, depending on the distance and any potential delays. However, weekends and holidays can affect delivery times, so it's best to check with the local postal service for specific estimates.