2021-03-23-----2022-08-25 north-america.pool.ntp.org

2019-12-05-----2022-05-27 us.pool.ntp.org

2022-01-28-----2022-01-28 3.us.pool.ntp.org

2021-02-19-----2022-01-08 1.us.pool.ntp.org

2021-11-11-----2021-12-31 0.us.pool.ntp.org

2021-12-31-----2021-12-31 2.us.pool.ntp.org

2019-12-27-----2021-06-02 pool.ntp.org

2021-05-16-----2021-05-16 ntp.sjtu.edu.cn

2021-04-25-----2021-04-25 1.opensuse.pool.ntp.org

2020-09-18-----2020-09-18 0.freebsd.pool.ntp.org

2020-02-13-----2020-04-20 2.android.pool.ntp.org