SimpleDateFormat rolling 1 hour too early for Fall 2003?

Question

Hey all...
My question deals with the SimpleDateFormat object, more specifically given a time in NY ( that rolls from EST to EDT and back to EST in the fall)
Currently the following code (borrowed from a previous post) works perfectly for the Spring transition from EST to EDT, i.e. GMT-5 to GMT-4 on April 6. But it seems to roll back to GMT-5 at 1AM for October 26, as opposed to 2AM as I would expect. Does anyone know why this happens?
any help would be appreciated.
thanks.
import java.util.SimpleTimeZone;
import java.text.SimpleDateFormat;
import java.text.DateFormat;
import java.text.ParseException;
import java.util.Date;
import java.util.TimeZone;
import java.io.*;
public class GMTTimeUtil {
     public static final SimpleDateFormat sdf =
     new SimpleDateFormat( "yyyyMMddHHmm" );
     static BufferedReader in = new BufferedReader( new InputStreamReader( System.in ) );
     public static final SimpleDateFormat formatter =
     new SimpleDateFormat( "yyyyMMddHHmm" );
     static {
          sdf.setTimeZone( TimeZone.getTimeZone( "GMT+00:00" ) );
     public static void main( String[] args ) {
          Date param = null;
          System.out.println( "Enter a time: (yyyyMMddHHmm )" );
          try {
          param = formatter.parse( in.readLine() );
          System.out.println( "The time in Greenwich based on input is: " + getGMTTime( param ) );
          } catch( Exception e) {
     public static String getGMTTime( Date param ) {
          System.out.println( "The time passed into this function is:" + param );     
          return sdf.format( param );

Answer 1

This may be of interest.
import java.util.*;
import java.text.*;
public final class EST_EDT{
public static void main(String[] args) throws java.lang.Exception{
  java.text.SimpleDateFormat form = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm z");
  TimeZone zone = TimeZone.getTimeZone("America/New_York");//behavior is different when SimpleTimeZone zone = new SimpleTimeZone(offset,ID);
  System.out.println(zone.getID());
  GregorianCalendar cal = (GregorianCalendar)Calendar.getInstance(zone);
  cal.setTimeZone(zone);
  form.setCalendar(cal);
  long t0 = 1067144400000L;
  System.out.println(t0);
for(int j=0;j<12;j++){
      cal.setTimeInMillis(t0+j*10*60*1000L);// increment of 10 minutes
      System.out.println(form.format(cal.getTime()));
}