GregorianCalendar cal = new GregorianCalendar (TimeZone.zoneGMT);
GregorianCalendar cal = new GregorianCalendar (TimeZone.getTimeZone("GMT"));
  public static long UTC (int year, int month, int date,			  int hours, int minutes, int seconds)  {    GregorianCalendar cal = new GregorianCalendar (TimeZone.zoneGMT);    cal.set(year+1900, month, date, hours, minutes, seconds);    return cal.getTimeInMillis();  }