Show approximate clock differences

## Get a credential - only required if not in same domain and no trust or user doesn't have permission. Note -message for anti-phishing as that will appear in the credential prompt
$cred = Get-Credential -Message wert3q245352er

## Create a remote PS session so our clock difference measurement doesn't also measure session establishment. Don't necessarily need credentials
$sesh = New-PSSession -Credential $cred -ComputerName glxa19pvs301.guyrleech.local

## Get the difference between remote and local clocks 10 times and show average. There will be a small delay as run sequentially not in parallel
1..10 |ForEach-Object { (Invoke-Command -Session $sesh -ScriptBlock {Get-Date}) - (Get-Date) } | Measure-Object -Property TotalMilliseconds -Average | Select-Object -Property Average

## Close the remote session
Remove-PSSession -Session $sesh
$sesh = $null