NKO Atomic Clock

Current time in milliseconds unit, dday remaining time calculator, elapsed time, stopwatch, server time checker

☞ Install NKO Atomic Clock(Android app) at Google Playstore
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http://ridibooks.com server time check history

  • 2019-07-10 17:58:17 KST -0.049284
  • 2019-06-16 23:29:28 KST -0.020932
  • 2019-05-27 17:57:22 KST -0.068458
  • 2019-05-12 22:59:31 KST -0.064081
  • 2019-04-26 17:50:49 KST 0.001818
  • 2019-04-25 17:58:17 KST -0.070741
  • 2019-04-10 17:54:08 KST -0.065076
  • 2019-04-09 17:56:50 KST 0.012200
  • 2019-03-20 17:51:16 KST -0.028378
  • 2019-02-19 17:59:43 KST -0.013885
  • Average -0.0366817

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We fetch a server clock and let you see

Webservers transmit their time in seconds unit, so without special treatment, the maximum error would be as big as 1 second. NKO Atomic Clock calculates a server time more than ten times in 1 second and seize the moment when the second changes. Thus we can minimize the calculation error as small as 0.1 second. Moreover, delays between our server and a destination server are considered so the accuracy of time increases.

NKO supports the HTTPS protocol and subdomains

Some servers use different servers over protocols or subdomains. You can get a desired result by specifying more details.


# You need to tell us an exact server address. For example, some sites host differently by whether the address begin with WWW or not.

# Even if your computer clock isn't synchronized, NKO always will display correct time.

# If you click a numeric time error in the history view, the clock will use that measurement.

# The results can have quite much error if the destination server is under load balancing. Please refer to a variance in the server time history information.

# A particular service uses its own time clock, different with web servers' clock. in this case, server time guessing is not meaningful.