淘宝:http://api.m.taobao.com/rest/api3.do?api=mtop.common.getTimestamp
苏宁:http://quan.suning.com/getSysTime.do
QQ: http://cgi.im.qq.com/cgi-bin/cgi_svrtime
北京时间网:https://bjtime.cn/st.asp
c# 获取和设置系统时间
public class Win32API { [DllImport("Kernel32.dll")] public static extern bool SetLocalTime( ref SYSTEMTIME Time ); [DllImport("Kernel32.dll")] public static extern void GetLocalTime(ref SYSTEMTIME Time); }