Stashing a quick prototype of a counter to display when DSC will next evaluate a node. PDT has a much better timer output.

dscticker.ps1

$LastStatus = (Get-DscConfigurationStatus).StartDate
$Frequency = (Get-DscLocalConfigurationManager).ConfigurationModeFrequencyMins
while ( (Get-Date) -lt ($LastStatus.AddMinutes($Frequency)) )
    {
        Write-Host ((Get-Date) - ($LastStatus.AddMinutes($Frequency)))
    }