Study: NTP Servers

server time.cachenetworks.com server sushi.compsci.lyon.edu server clock.fmt.he.net server clock.sjc.he.net server ntp.ncsd.edu server ntpl.mainecoon.com server ntpl.sf-bay.org server ntp2.sf-bay.org server timex.usg.edu server ntp.shorty.com server rolex.usg.edu server time.windows.com server time.nist.gov