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

  • 2021-04-13 06:56:37 KST 0.002611
  • 2021-04-12 06:55:59 KST -0.004654
  • 2021-04-11 06:56:11 KST -0.050204
  • 2021-04-10 11:38:27 KST -0.017173
  • 2021-04-10 06:56:46 KST -0.073857
  • 2021-04-10 05:34:17 KST -0.723037
  • 2021-04-09 06:56:29 KST -0.005451
  • 2021-04-06 06:58:05 KST -0.048481
  • 2021-04-05 06:56:55 KST -0.070273
  • 2021-03-30 06:56:36 KST -0.006861
  • Average -0.099738

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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.