NTP Pool

NTP Pool is a project to off load some of the hits to the large public NTP servers which have been closing its access due to abuse to usage policy. So a volunteer pool of NTP servers was implemented by a group led by Adrian von Bidder and David Mills (the author of NTP) started this project to stave the tide and give an option that if people just need to sync their clocks, 200 ms (yes that is milli-seconds) one way or another is not a huge deal.