Final answer:
After an order is shipped, the UPS tracking number usually updates within 24 hours, often by the evening of pickup or the next business day.
Step-by-step explanation:
Once an order has been shipped via UPS, the tracking number typically updates within 24 hours. However, this can vary depending on the volume of shipments and processing times at UPS facilities. Most often, customers may see updates the evening of the day the shipment was picked up, or by the next business day. It's important to set realistic expectations and advise customers that while some tracking information may appear sooner, it could take up to a full business day for the tracking number to be fully updated in the system.