The Network Time Protocol (NTP) server is set to provide the network time synchronization service for all our campus network users. You may synchronize network devices, servers and personal computers via any NTP or Simple Network Time Protocol (SNTP) compatible client. The NTP server is accessible on ntp.nju.edu.cn.

Users may configure an NTP client either in Linux or through software on Windows.

    1. Linux system

   (1)Run the following command to change the system time:

       # ntpdate ntp.nju.edu.cn

   (2)Run hwclock -w to set the hardware clock as the system time or run the following command to configure automatic update with a cron job:

      # crontab –e

     0 0 * * * /usr/sbin/ntpdate  ntp.nju.edu.cn;/sbin/hwclock  –w

     2. Windows system

    (1) In the taskbar, double click the clock icon in the lower right corner to display the 日期和时间 属性dialog box.

   (2) Choose Internet时间.

 (3)Click the check box before 自动与Internet时间服务器同步(automatically synchronize with the Internet server). Set 服务器(server) as ntp.nju.edu.cn and click 应用(use). Then click 立即更新(update).