unity 获取网络时间和本地时间

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class NetWorkTime : MonoBehaviour {
    public string monthAndDay = "";    //月份和日期
    // Use this for initialization
    void Start () {
        


        
    }

    
    // Update is called once per frame
    void Update () {
        StartCoroutine(GetTime());//时刻更新时间
    }
    
    IEnumerator GetTime()
    {
        WWW www = new WWW("http://www.hko.gov.hk/cgi-bin/gts/time5a.pr?a=1");
        yield return www;
        
        if (www.text == "" || www.text.Trim()=="")//如果获取网络时间失败,改为获取系统时间
        {
            
            monthAndDay = System.DateTime.Now.Month + "_" + System.DateTime.Now.Day;
            //Debug.Log(monthAndDay);

        }
        else//成功获取网络时间
        {
            string timeStr = www.text.Substring(2);
            System.DateTime time = System.DateTime.MinValue;
            System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1));
            time = startTime.AddMilliseconds(Convert.ToDouble(timeStr));
            timeStr = time.ToString();
           

            monthAndDay = time.Month + "_" + time.Day;
            //Debug.Log(monthAndDay);
        }
        
    }
}