The time between login and logout is called a "user session", "login session" or simply "session". Is there a similar specific name for an OS "session", i.e. the period of time between boot and shutdown? "One uptime" is the only thing that comes to my mind, but that seems weird. Can it be used that way? Is there a better term?
Examples:
The NTP sync and the log entry ocurred during the same ?????. (meaning "the system was not rebooted between the NTP sync and the log entry")
During one ?????, the uptime value increases monotonically over time.