https://github.com/delphiprogramming/ServerDate
http://stackoverflow.com/questions/5357719/how-to-sync-a-javascript-countdown-with-server-time?lq=1
http://stackoverflow.com/questions/10585910/sync-js-time-between-multiple-devices
http://stackoverflow.com/questions/1638337/the-best-way-to-synchronize-client-side-javascript-clock-with-server-date
http://stackoverflow.com/questions/8478179/synchronize-time-in-javascript-with-a-good-precision-0-5s-ntp-like
