What time do I have to ship for overnight delivery?
Whatever hour the specific location you use stops accepting express parcels for the day. USPS sets an acceptance time per Post Office under DMM 113, and FedEx states plainly that cutoff times for overnight delivery vary by location, both read 2026-08-09. There is no single national hour at any carrier.
What happens if I miss the overnight cutoff?
The parcel enters the next day's sort and every promised hour shifts by one business day. USPS writes the rule down: items presented after the local acceptance time are deemed mailed on the next day the office is open, per DMM 113, read 2026-08-09. The label price does not change - only the date does.
Are drop box cutoffs earlier than counter cutoffs?
Usually, because a box is emptied at a posted final collection hour while a staffed counter accepts until its own later deadline. A parcel dropped after the last collection sits until tomorrow's pickup. Read the collection time printed on the box before trusting it with an overnight.
Does shipping overnight on Friday deliver on Saturday?
Only when a Saturday-capable service covers that lane. UPS lists Saturday delivery for UPS Next Day Air Early and UPS Next Day Air, and FedEx offers Saturday options in certain areas, both read 2026-08-09. Otherwise a Friday overnight is really a Monday delivery.