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://was.woosuk.ac.kr/ws/sso/index.jsp server time check history

  • 2021-02-24 13:57:02 KST -0.084513
  • 2021-02-24 13:44:24 KST -0.135891
  • 2021-02-24 13:37:18 KST -0.096624
  • 2021-02-23 13:56:55 KST -0.083019
  • 2021-02-22 13:56:25 KST -0.199601
  • 2021-02-22 13:55:14 KST -0.181380
  • 2021-02-22 13:53:51 KST -0.197629
  • 2021-02-22 13:51:20 KST -0.204938
  • 2021-02-12 16:53:09 KST -0.194480
  • 2020-08-24 13:56:16 KST -0.178143
  • Average -0.1556218

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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.