2017-12-20-----2017-12-20 0.sg.pool.ntp.org
2017-12-20-----2017-12-20 sg.pool.ntp.org
2016-05-11-----2016-12-31 asia.pool.ntp.org
2016-11-15-----2016-11-15 1.asia.pool.ntp.org
2016-10-18-----2016-10-18 2.asia.pool.ntp.org
2016-10-18-----2016-10-18 0.asia.pool.ntp.org