We are moving into a 7 by 24 hour world. Sundays are no longer a day of rest, they are a day for home delivery. Amazon announced Sunday delivery in 15 markets. Consumer expectations are being set and supply chains are going to need to meet new demands for operation times and speed. Amazon expands Sunday delivery service to 15 cities, including Philadelphia, Dallas By Mae Anderson NEW YORK — Amazon is expanding its Sunday package delivery service to 15 more cities across the country, including Philadelphia, New Orleans and Dallas. Amazon first rolled out the service as part of a new deal with the U.S. Postal Service in November to New York and Los Angeles, just ahead of the holiday rush. At the time,…