That UPS map, always shows the delivery truck on I86, westbound from Pocatello, and that is over 124 miles WESt from where I live...ALWAYS! (Always for every time I used to check; honestly, gave up checking a year ago.) And if the UPS guy does deliver I am close to the last on his route, and more than once every half dozen deliveries are not delivered on the days stated. (This does not count the days of extreme weather which is fully understood considering the main road to my house). Fedex, on the other hand usual delivers between 1-3 PM, in case of bad weather possibly 5-6PM. USPS is as good as FedEx.
For days of extreme weather, I fully understand not one of the three will deliver; I live off a country road, basically uphill most of the time and at times, some serious snow will fall and it can take a day or more before the county plow comes out.
And sometimes, the plow (which is not a normal plow) doesn't even make it out of town for three or four days....