Set-Date

Changes the system time on the computer to a time that you specify. Note: This command can only be used through PowerShell. More information: https://learn.microsoft.com/powershell/module/microsoft.powershell.utility/set-date.

Add three days to the system date:

Set-Date -Date (Get-Date).AddDays({{3}})

Set the system clock back 10 minutes:

Set-Date -Adjust -0:10:0 -DisplayHint Time

Add 90 minutes to the system clock:

$90mins = New-TimeSpan -Minutes {{90}}; Set-Date -Adjust $90mins