I think there is a missing feature (in my opinion a bug) in the
SimpleTimeZone class. There is no natural way the get the start and end
dates from the daylight saving time of a SimpleTimeZone. I want to have
something like (maybe throwing an exception in case no DST is used):

public int getStartYear();
public int getStartDayOfWeekInMonth();
public int getStartDayOfWeek();
public int getStartMonth();
public int getStartTime();
public int getEndDayOfWeekInMonth();
public int getEndDayOfWeek();
public int getEndMonth();
public int getEndTime();