Customers in the Evanstonian Hotel arrive to the check-out desk between 7:00AM to 11:00AM at a rate of 70 customers per hour. No customer arrives after 11:00AM. It takes a receptionist 2 minutes to handle a customer. The hotel always has two receptionists available from 7:00AM to handle check outs, who continue working until all customers checking out have been served.

At what time receptionists are able to serve all customers?