At 1:00 PM, Carlos puts into the refrigerator a can of soda, which has been standing out in a room with temperature 70°F. The temperature inside the refrigerator is 40°F. Fifteen minutes later, at 1:15 PM, the temperature of the soda has fallen to 60°F. At some later time Carlos removes the soda from the refrigerator to the room where, at 2:00 PM, the soda temperature is 60oF. At what time did Carlos remove the soda from the refrigerator?