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.yu.ac.kr/index_sugang.html server time check history

  • 2019-11-15 13:41:41 KST 0.008338
  • 2019-11-06 16:23:48 KST -0.014199
  • 2019-09-06 13:41:34 KST 0.003239
  • 2019-09-06 12:05:39 KST -0.001549
  • 2019-09-05 13:26:12 KST 0.039227
  • 2019-09-05 11:13:44 KST -0.075420
  • 2019-09-05 11:05:59 KST -0.092503
  • 2019-09-05 11:04:59 KST -0.083516
  • 2019-09-05 10:26:54 KST -0.118886
  • 2019-09-05 10:24:26 KST -0.078378
  • Average -0.0413647

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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.