Convert Between utcdatetime and System.DateTime in AX 2012

static void JobDateTimeGlobalMarshal(Args _args)
{
    System.DateTime netDttm;
    utcdatetime xppDttm;
    str xppString;
    ;
    xppDttm = 2007-06-05T23:22:21; // ISO standard format.
   
    // Convert X++ to .NET.
    netDttm = Global::utcDateTime2SystemDateTime(xppDttm);
   
    // Convert .NET to X++.
    xppDttm = Global::CLRSystemDateTime2UtcDateTime(netDttm);
   
    xppString = DateTimeUtil::toStr(xppDttm);
    info("xppDttm: " + xppString);
}