Convert Unix Timestamp (with millisecond!) to Local time

getMillis.ps1

function getMillis {
    param (
        $unixTimeStamp
    )
    $epochStart = Get-Date 01.01.1970 
    $millisStamp = ($epochStart + ([System.TimeSpan]::frommilliseconds($unixTimeStamp))).ToLocalTime()
    $millisStampOutput = $millisStamp.ToString("yyyy-MM-dd HH:mm:ss.ffffff")
    $millisStampClipboard = $millisStamp.ToString("HH:mm:ss.ffffff") 
    Write-Host "~~~~~~~~~~~~~~~~~~~~~~~~~~~~"
    Write-Host "Datetime: $millisStampOutput" -ForegroundColor Cyan
    Write-Host "Clipping: $millisStampClipboard" -ForegroundColor Cyan
    Write-Host "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"    
    $millisStampClipboard = $millisStamp.ToString("HH:mm:ss.ffffff") | clip
}