NKO Atomic Clock

Current time in milliseconds unit, dday remaining time calculator, elapsed time, stopwatch, server time checker

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http://sugang.yu.ac.kr/index_sugang.html server time check history

  • 2021-03-05 08:20:08 KST -0.043491
  • 2021-02-18 10:30:34 KST -0.062199
  • 2021-02-17 09:49:45 KST -0.031941
  • 2021-02-17 09:48:16 KST -0.000869
  • 2021-02-17 09:42:44 KST -0.018945
  • 2021-02-16 09:55:50 KST -0.049236
  • 2021-02-16 09:53:54 KST -0.008904
  • 2021-02-16 09:49:47 KST -0.020095
  • 2021-02-16 09:33:43 KST -0.046220
  • 2020-10-22 19:39:13 KST -0.055798
  • Average -0.0337698

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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.