One microsecond or better with NTP
TimeKeeper's from-the-ground up NTP engine can synchronize system clocks to well under one microsecond accuracy levels.
June 14th 2016 · ntp
Warning - GPS jamming at London Data Center
Measuring Clock Sync and Validating time.
Minimizing Spend on MiFID II Compliance
MiFID II Clock Compliance with Windows is easy using TimeKeeper
Xena Networks puts TimeKeeper inside new Ethernet Testing Devices
Talk on MiFID II given at Bank of England
MiFID II Clock Regulation in practice
April 15th 2016