Final answer:
A package being tendered to UPS on a different date means the shipment handover occurred at a time other than scheduled. This can impact the delivery date as the shipping process starts upon tendering to UPS.
Step-by-step explanation:
When a package is tendered to UPS on a date different than initially provided by the shipper, it means that the actual handover of the package to UPS occurred on a different date than what was originally scheduled or communicated by the person or company shipping the item. This can be due to a variety of reasons such as the shipper delaying the shipment, UPS not being able to pick up the item on the planned date, or other logistical issues. It is important to note that this may affect the estimated delivery date because the shipping process officially starts when the package is tendered to the courier.