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://for-s.seoultech.ac.kr/view/main.jsp server time check history

  • 2020-08-20 16:25:17 KST -0.358265
  • 2020-01-14 05:27:12 KST -0.412488
  • 2019-09-02 08:58:10 KST -0.730741
  • 2019-09-02 08:56:23 KST -0.686011
  • 2019-08-05 08:57:22 KST -0.212335
  • 2019-08-05 08:52:52 KST -0.235554
  • 2019-08-05 08:51:30 KST -0.277624
  • 2019-08-05 08:49:00 KST -0.270074
  • 2019-08-05 08:47:03 KST -0.244974
  • 2019-08-05 08:44:49 KST -0.227667
  • Average -0.3655733

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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.