Can LM verify a server's time is correct?

I'm pretty new at writing my own DataSources, would you be willing to shar eyours?  I created this Powershell script to poll time.windows.com 5 times and average the results, but I'm having trouble trying to turn that into a DataSource.

# Define time 
$timeServer = "time.windows.com"
$samples = 5
$offsets = @()

# Collect offset data
for ($i = 0; $i -lt $samples; $i++) {
    $output = w32tm /stripchart /computer:$timeServer /dataonly /samples:1 | Select-String "([\-\d\.]+)s"
    if ($output -match "([\-\d\.]+)s") {
        $offsets += [double]$matches[1]
    }
    Start-Sleep -Seconds 1
}

# Calculate average offset
if ($offsets.Count -gt 0) {
    $averageOffset = ($offsets | Measure-Object -Average).Average
    $averageOffset = [Math]::Abs($averageOffset)
    Write-Output $averageOffset
} else {
    Write-Output "Failed to retrieve time offsets."
}