Converting PST time to Local device time in android

I am trying to convert PST time to Device local time using below function. It works fine but in London timezone its not working properly. If its 04:58 AM PST then it should show 12:58 PM as per London timezone but its showing 12:58 AM. Am i doing anything wrong here? Please kindly guide.

System.out.println("2015-06-23 04:58:00 AM = "
                + getFormattedTimehhmm(new TimeTest()
                        .getTimeRelativeToDevice("2015-06-23 04:58:00 AM")));

public String getTimeRelativeToDevice(String pstTime) {
        final String DATE_TIME_FORMAT = "yyyy-MM-dd hh:mm:ss a";
        SimpleDateFormat sdf = new SimpleDateFormat(DATE_TIME_FORMAT);

        TimeZone fromTimeZone = TimeZone.getTimeZone("America/Los_Angeles");

        TimeZone toTimeZone = TimeZone.getTimeZone("Europe/London");

        // Get a Calendar instance using the default time zone and locale.
        Calendar fromCalendar = Calendar.getInstance();

        // Set the calendar's time with the given date
        fromCalendar.setTimeZone(fromTimeZone);
        try {
            fromCalendar.setTime(sdf.parse(pstTime));
        } catch (ParseException e) {
            e.printStackTrace();
        }

        System.out.println("Input: " + fromCalendar.getTime() + " in "
                + fromTimeZone.getDisplayName());    
        return sdf.format(fromCalendar.getTime());
    }