1. A computer system for identifying a source of a time-of-day network error, the computer system comprising: one or more computer processors; one or more computer readable storage media; program instructions stored on the one or more computer readable storage media for execution by at least one of the one or more computer processors; and wherein the system is operable to: increment a first counter and a second counter on each of the one or more computer processors simultaneously; determine whether an error is detected in the one or more computer processors; responsive to determining the error is detected, freeze the second counter on the one or more computer processors associated with the detected error, and notify a service processor of the error via a system interrupt, wherein the service processor is one of the one or more computer processors; determine on which of the one or more computer processors the second counter is frozen; and report a time-of-day network error, wherein reporting a time-of-day network error includes assigning a priority to one or more sources of the time-of-day network error.