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

  • 2019-01-03 22:43:48 KST -0.042181
  • 2019-01-02 19:55:06 KST -0.027770
  • 2019-01-02 13:55:02 KST -0.048819
  • 2018-12-27 13:19:20 KST -0.073231
  • 2018-12-26 18:55:37 KST -0.016361
  • 2018-11-18 22:54:42 KST -0.040408
  • 2018-11-15 07:56:50 KST -0.027620
  • 2018-11-13 14:31:02 KST -0.033645
  • 2018-11-13 14:25:18 KST -0.043283
  • 2018-11-13 14:22:17 KST -0.001518
  • Average -0.0354836

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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.