Amazon's same-day delivery option has been a boon to impatient shoppers in those few areas where it's available, and it's significantly expanding its reach today -- with one notable exception. The speedy shipping is now available in Dallas and San Francisco, letting locals get some of their orders on a given day by 9PM that night. If you're not an early riser, you'll also be happy to know that cutoff times for same-day ordering are getting later. Those in Dallas, Los Angeles, Phoenix, San Francisco and Seattle can purchase as late as 12:15PM and still expect a package by the evening. Indianapolis residents, meanwhile, can check out by 11:30AM instead of the previous (and not very realistic) 7AM.