PS IsDateTime

# 05.06.2020 00:00:00
$format = "dd.MM.yyyy hh:mm:ss";
function IsDateTime($date)
{
    try{
        if($date.GetType().Name -eq 'String'){
            [datetime]$dirDate = New-Object DateTime
            if (!([DateTime]::TryParseExact($date,$format, [System.Globalization.CultureInfo]::InvariantCulture, [System.Globalization.DateTimeStyles]::None, [ref]$dirDate)))
            {
                return $false
            }
            return $true
        }elseif($date.GetType().Name -eq 'DateTime'){
            return $true
        }else{
            throw 'Unknown type'
        }
    }catch{
        throw 'Empty date'
    }
}