Convert DateTime SQLite to GMT DateTime SQLite

static public String convertDateTimeToGMT(String in)
{
    String out = in;

    SimpleDateFormat sdf = new SimpleDateFormat(Utility.getDBDateFormat());
    Date iDate = null;
    try {
        iDate = sdf.parse(in);
    } catch (ParseException e) {
        Log.e(TAG, e.getMessage());
        return in;
    }

    long newd = iDate.getTime() - sdf.getTimeZone().getRawOffset();
    SimpleDateFormat osdf = new SimpleDateFormat(Utility.getDBDateFormat());
    out = osdf.format(new Date(newd));

    return out;
}