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://sugang.snu.ac.kr/ server time check history

  • 2018-03-08 21:33:33 KST -0.069156
  • 2018-03-05 08:46:32 KST 0.004013
  • 2018-03-05 08:31:27 KST -0.022727
  • 2018-03-02 08:58:10 KST -0.036010
  • 2018-03-02 08:57:07 KST 0.000287
  • 2018-03-02 08:55:31 KST -0.000673
  • 2018-02-23 08:45:29 KST -0.064214
  • 2018-02-22 08:58:05 KST -0.033821
  • 2018-02-22 08:43:42 KST -0.057019
  • 2018-02-21 08:49:21 KST -0.003077
  • Average -0.0282397

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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.