what is the cut off time for usps overnight

what is the cut off time for usps overnight refers to the latest time by which USPS packages must be dropped off to ensure they are shipped on the same day for overnight delivery. The cutoff time varies by location and the specific type of service (e.g., Priority Mail Express or First-Class). For example, some post offices may have a cutoff time as early as 3:00 PM, while others may allow later drop-offs. It is essential to check with your local USPS office to find the exact cutoff time for overnight services.