Include the resume time as part of the ShouldProcess message in Suspend-WindowsUpdate to include the resume date, The end result should be something like this:
PS C:\> Suspend-WindowsUpdate -Resume "9/25/2018 6:00AM" -WhatIf
What if: Performing the operation "Suspending WindowsUpdate until 9/25/2018 6:00AM" on target "BOVINE320".
Include the resume time as part of the ShouldProcess message in Suspend-WindowsUpdate to include the resume date, The end result should be something like this: