Reboot inventory in any dataclass?

So I do know there is an event table for patches when a machine was rebooted;however, I am looking to see if there is a reboot inventory somewhere outsid of that. I rebooted a machine numerous times and the event table for the patch reboot did not update. I need to be able to report to site leads on machines that have not rebooted in X amount of days. Before I create a custom inventory, curious if there is built in data..

Thx All