what does in transit mean usps

"In transit" is a status update used by the United States Postal Service (USPS) to indicate that a package is being moved between different locations. This means that the package is currently on the move and has not yet reached its final destination. The package could be in between different hubs, on its way to the first shipping warehouse or hub, or on its way to the last destination before it reaches the recipients doorstep. The "in transit" status can also mean that the package is on board USPS trailer trucks, has been shipped via USPS train cars, or is currently flying above on airfreight used by the USPS fleet. If a package is stuck in transit, it means that it has not been scanned at any distribution depot in the last 24 hours, and nobody knows the current location of the shipment.