is overnight shipping really overnight

is overnight shipping really overnight can depend on the carrier and the destination. In most cases, services like USPS Priority Mail Express, FedEx Priority Overnight, and UPS Next Day Air guarantee delivery the following business day. However, these services typically come with specific cut-off times for drop-off, and deliveries may not be guaranteed if there are unforeseen delays such as weather conditions or logistical issues. Some services, like USPS Priority Mail Express, may also have a delivery window, such as by noon or 3:00 PM the next day, so it’s important to check with the carrier for exact details before shipping. While overnight shipping is generally reliable, unexpected delays can still happen.