https://www.meinbergglobal.com/english/sw/ntp.htm
https://www.meinbergglobal.com/download/ntp/windows/ntp-4.2.8p9-win32-setup.exe
配置：
C:\Program Files (x86)\NTP\etc\ntp.conf
restrict 0.0.0.0 mask 0.0.0.0 nomodify # Use drift file driftfile "C:\Program Files (x86)\NTP\etc\ntp.drift" server time.windows.com iburst minpoll 6 maxpoll 7 server 1.asia.pool.ntp.org iburst minpoll 6 maxpoll 7 server 2.asia.pool.ntp.org iburst minpoll 6 maxpoll 7 server 0.us.pool.ntp.org iburst minpoll 6 maxpoll 7 server 1.us.pool.ntp.org iburst minpoll 6 maxpoll 7 server 2.us.pool.ntp.org iburst minpoll 6 maxpoll 7
