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

  • 2019-03-04 15:02:51 KST -0.247686
  • 2019-03-04 15:01:14 KST -0.244810
  • 2019-03-04 14:58:27 KST -0.250690
  • 2019-03-04 14:55:39 KST -0.248829
  • 2019-03-04 14:54:38 KST -0.279405
  • 2019-02-24 22:08:26 KST -1.239108
  • 2019-02-24 22:00:56 KST -1.274336
  • 2019-02-24 21:58:56 KST -1.234761
  • 2019-02-12 08:44:07 KST -0.480173
  • 2019-02-11 08:58:11 KST -0.419943
  • Average -0.5919741

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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.