JSON Eception no value for timezone

package io.github.anoobishnoob.stormy;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;

/**
 * Created by saqan on 6/25/2018.
 */

public class CurrentWeather {
    private String locationLabel;
    private String icon;
    private long time;
    private double temperature;
    private double humidity;
    private double precipChance;
    private String summary;
    private String timeZone;

    public String getTimeZone() {
        return timeZone;
    }

    public void setTimeZone(String timeZone) {
        this.timeZone = timeZone;
    }

    public String getLocationLabel() {
        return locationLabel;
    }

    public void setLocationLabel(String locationLabel) {
        this.locationLabel = locationLabel;
    }

    public String getIcon() {
        return icon;
    }

    public void setIcon(String icon) {
        this.icon = icon;
    }

    public long getTime() {
        return time;
    }

    public String getFormattedTime(){
        SimpleDateFormat formatter = new SimpleDateFormat("h:mm a");

        formatter.setTimeZone(TimeZone.getTimeZone(timeZone));
        Date dateTime = new Date(time *1000);
        return formatter.format(dateTime);

    }

    public void setTime(long time) {
        this.time = time;
    }

    public double getTemperature() {
        return temperature;
    }

    public void setTemperature(double temperature) {
        this.temperature = temperature;
    }

    public double getHumidity() {
        return humidity;
    }

    public void setHumidity(double humidity) {
        this.humidity = humidity;
    }

    public double getPrecipChance() {
        return precipChance;
    }

    public void setPrecipChance(double precipChance) {
        this.precipChance = precipChance;
    }

    public String getSummary() {
        return summary;
    }

    public void setSummary(String summary) {
        this.summary = summary;
    }
}


/////////// end of this class//////////////////////

/////////////main activity below////////////////

 private CurrentWeather getCurrentDetails(String jsonData) throws JSONException{
        JSONObject forecast = new JSONObject(jsonData);

        String timezone = forecast.getString("Timezone");
        Log.i(TAG,"From JSON:" + timezone);

        JSONObject currently = forecast.getJSONObject("currently");

        CurrentWeather currentWeather = new CurrentWeather();

        currentWeather.setHumidity(currently.getDouble("humidity"));
        currentWeather.setTime(currently.getLong("time"));
        currentWeather.setIcon(currently.getString("icon"));
        currentWeather.setLocationLabel("Alcatraz Island, CA");
        currentWeather.setPrecipChance(currently.getDouble("precipProbability"));
        currentWeather.setSummary(currently.getString("summary"));
        currentWeather.setTemperature(currently.getDouble("tempature"));
        currentWeather.setTimeZone(timezone);

        Log.d(TAG, currentWeather.getFormattedTime());
        return currentWeather; 
    }