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://sugang.korea.ac.kr/graduate/ server time check history

  • 2019-08-19 09:55:45 KST -0.039390
  • 2019-08-14 08:35:47 KST -0.037636
  • 2018-08-13 08:15:24 KST -47.760145
  • 2018-08-13 08:14:16 KST -47.816428
  • 2017-08-14 08:28:55 KST -0.017229
  • 2017-08-14 08:15:06 KST -0.012628
  • 2017-03-02 08:26:34 KST -0.009418
  • 2017-02-20 18:58:25 KST -0.108500
  • 2017-02-20 08:24:22 KST -0.072154
  • 2017-02-20 08:14:48 KST -0.015823
  • Average -9.5889351

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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.