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.cjsisul.or.kr/home/main.do server time check history

  • 2019-11-19 06:57:17 KST -0.007171
  • 2019-11-18 07:38:57 KST -0.058901
  • 2019-11-10 15:28:55 KST 0.006508
  • 2019-11-09 06:56:48 KST -0.030678
  • 2019-11-08 06:57:34 KST -0.028483
  • 2019-11-06 14:28:21 KST -0.051469
  • 2019-11-05 06:57:15 KST 0.006803
  • 2019-11-04 06:54:17 KST -0.004593
  • 2019-11-03 06:56:59 KST -0.017842
  • 2019-11-02 06:56:58 KST -0.017515
  • Average -0.0203341

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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.