In the vSphere UI, users can easily view and manage all of their vCenter Server certificates by navigating to Administration->Certificate->Certificate Management as shown in the screenshot below.
There are four types of vCenter Server certificates: Machine SSL, VMware Certificate Authority, STS Signing Certificate and the Trusted Root. On the main summary view, we can see the validity of the certificate, which is useful to quickly determine if you need to plan on replacing a specific certificate. We can also get more information about a specific certificate by clicking on the "View Details".
A question recently came up internally asking whether there is a vSphere API to retrieve all of this information programmatically, especially the validity of the certificate?