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.snu.ac.kr/ server time check history

  • 2018-09-06 20:55:29 KST -0.030969
  • 2018-09-04 08:58:45 KST -0.067636
  • 2018-09-03 18:39:51 KST -0.046210
  • 2018-08-28 11:00:09 KST -0.018252
  • 2018-08-28 08:59:45 KST -0.028691
  • 2018-08-28 08:56:04 KST -0.004180
  • 2018-08-28 08:52:05 KST -0.037982
  • 2018-08-28 08:40:10 KST -0.029595
  • 2018-08-26 08:23:17 KST -0.054627
  • 2018-08-22 21:02:55 KST -0.043041
  • Average -0.0361183

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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.