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

  • 2018-10-23 03:50:48 KST -0.001701
  • 2018-09-29 23:52:47 KST -0.072262
  • 2018-05-26 01:38:34 KST -0.030129
  • 2018-05-15 16:19:59 KST -0.066092
  • 2018-05-03 10:33:56 KST 0.006901
  • 2018-05-02 08:16:50 KST 0.000835
  • 2018-04-30 12:59:33 KST -0.013804
  • 2018-04-05 03:26:41 KST -0.064003
  • 2018-03-30 03:35:09 KST 0.006381
  • 2018-03-25 23:59:37 KST 0.001325
  • Average -0.0232549

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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.