I am using codeigniter framework and I have integrated UPS rates into my site. Recently I wanted to add the expected delivery date but I noticed that the UPS API is returning Delivery Dates for everything except UPS Ground (code 03).
I can't figure out what I'm missing or doing wrong but I know other sites give estimates for UPS Ground shipping
I am using this UPS Library: http://codeigniter.com/wiki/UPS_Rate_Tool/
I contacted UPS directly to get the answer to this. It turns out they only give Delivery Dates for Guaranteed services and UPS Ground is not guaranteed therefore when you request a rate there will be no data for the Delivery Date.
Since UPS Ground is not guaranteed you can only get an estimated ship date which must be done using a separate ups api: 'Time in Transit API' Xpath – /TimeInTransitResponse/TransitResponse/ServiceSummary/EstimatedArrival/Arrival/Date
Hope this saves someone the time and confusion that I had!