HwInfo does not, but RTSS does. I'm no expert in either but Google showed this thread:
Hello, I would like to know if there is a system showing time (clock) plugin for RTSS (not MSI AB) for OSD while playing games? (RTSS+ HwInfo)
forums.guru3d.com
and this video explains how to do it:
The video makes it very simple. I added it to my HwInfo display in a couple of minutes!