On Wed, Jul 27, 2016 at 3:58 PM, Georgi Guninski <guninski@guninski.com> wrote:

Getting very good approximation of system time from a browser is not
very trivial, but likely writing something like NTP in javascript is
doable.

Haven't tried it, but this JS library claims to return microsecond-resolution system time in a vareity of browsers: https://github.com/medikoo/microtime-x