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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https://yeyak.seoul.go.kr/request.web?execution=e2s6 server time check history

  • 2018-03-22 01:30:45 KST 0.043567
  • 2018-03-20 16:20:53 KST -0.037874
  • 2018-03-16 06:18:39 KST 0.011978
  • 2018-03-14 07:07:55 KST -0.258272
  • 2018-03-05 02:50:36 KST -0.056867
  • 2018-02-19 09:09:18 KST -0.068313
  • 2018-02-11 19:54:42 KST -0.019570
  • 2018-01-18 14:40:01 KST -0.023872
  • 2018-01-09 10:44:39 KST -0.078661
  • 2018-01-08 09:00:14 KST -0.020997
  • Average -0.0508881

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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.