Two landscapers, Pete and Moss, are digging dirt to make a hole for a swimming pool. Pete arrives and starts digging at 8:00 am and digs out 1000 pounds per hour. Moss sleeps in and starts digging at 9:00 but he can dig 1250 pounds of dirt per hour. After how many hours of digging will Moss have shoveled the same amount of dirt as Pete?