This object stores the timestamp at which this particular QoS shaper history bin was created, i.e., when the prior interval closed and archiving began. An admin relies on this timestamp to correlate a set of archived shaper counters with a specific point in time, which is essential when lining up a performance dip with other logged events. For example, to confirm a burst of tail drops coincided with a network maintenance window, an admin would check cmQosShaperHistoryTime against the maintenance ticket's start time.