Did you know you can determine when a VM was created? All you need is a Prism Central instance.
In PC UI go to Virtual Infrastructure –> VMs –> List –> in Focus dropdown choose +Add Custom and search for “Created Timestamp”.
You can also find the time stamp from PC CLI using nuclei.
For details refer to KB-9045 How to find a VM creation date and time in Prism Central.
Always remember to configure adblocking plugin (if you are using one) in the Web browser to exclude Prism from checks. KB-8762 Prism home page shows "loading" when Web browser has AdBlock extension installed