A server system, a terminal device, an operating information collection system, a program, a server system operating method, and a terminal device operating method communicate information for appropriately displaying the time until printing is completed when using a terminal device to monitor the time until a job on the monitored device will be completed. A server system 7 is a server system that collects operating information of a monitored device, and includes a communicator 731 and a processor 71. The processor 71 causes the communicator 731 to send job completion time information to a terminal device 9, and when a specific event causing a change in the time until job completion occurs, sends correction information for the job completion time information to the terminal device 9 by push notification.