 A momentary station keeping hold with about between the two spacecraft allowed Russian flight controllers at the Moscow Mission Control to check the systems before issuing the approval to begin the 11-minute final approach to the ISS.The automated docking system of the Progress M-13M operated flawlessly and the linkup of Progress M-13M to the Space Station's Pirs docking port occurred just before an orbital sunset while the two spacecraft were orbiting above northern China.Following the on time docking, hooks and latches were engaged a few minutes after to secure the cargo ship to the ISS.