           server 0.north-america.pool.ntp.org
	   server 1.north-america.pool.ntp.org
	   server 2.north-america.pool.ntp.org
	   server 3.north-america.pool.ntp.org
           server 0.us.pool.ntp.org
	   server 1.us.pool.ntp.org
	   server 2.us.pool.ntp.org
	   server 3.us.pool.ntp.org




           