NTP (Network Time Protocol) And PTP (Precision Time Protocol)

Page Contents

http://www.allanstime.com/Publications/DWA/Science_Timekeeping/TheScienceOfTimekeeping.pdf
https://tools.ietf.org/html/rfc5905
https://www.jitterlabs.com/support/calculators/ppm
http://www.best-microcontroller-projects.com/ppm.html
https://www.dataq.com/blog/data-logger/whats-all-this-ppm-stuff/
https://www.meinbergglobal.com/english/info/leap-second.htm
http://www.npl.co.uk/educate-explore/what-is-time/the-world-time-system
http://www.oc.nps.edu/oc2902w/gps/timsys.html
https://stackoverflow.com/questions/48846521/will-gmtime-report-seconds-as-60-when-in-a-leap-second
http://www.madore.org/~david/computers/unix-leap-seconds.html
http://leapsecond.com/java/gpsclock.htm
https://www.avantec.cl/includes/dwn/subir_web/documentos/AN_Fundamentals.of.Time.and.Frequency.pdf