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://www.sejongpac.or.kr/performance/view_real.asp?performIdx=29705 server time check history

  • 2019-11-06 16:22:26 KST -2.193589
  • 2019-09-25 02:10:12 KST -1.113427
  • 2019-09-24 16:05:58 KST -1.828874
  • 2019-06-25 13:52:04 KST -0.867943
  • 2019-06-25 13:38:40 KST -0.007660
  • 2019-06-25 13:31:27 KST -0.801110
  • 2019-05-21 13:52:21 KST 4.557067
  • 2019-04-16 19:31:49 KST -5.741592
  • 2019-03-14 13:50:46 KST 0.135558
  • 2019-03-14 10:00:18 KST -0.544474
  • Average -0.8406044

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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.