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

  • 2020-10-22 19:39:13 KST -0.055798
  • 2020-10-02 09:57:49 KST -0.043028
  • 2020-09-04 08:28:51 KST -0.008783
  • 2020-09-04 08:17:45 KST -0.018420
  • 2020-09-04 08:16:39 KST 0.010719
  • 2020-08-20 09:56:51 KST -0.065097
  • 2020-08-20 09:51:21 KST -0.027396
  • 2020-08-19 09:59:09 KST -0.016689
  • 2020-08-19 09:57:12 KST -0.067105
  • 2020-08-19 09:52:38 KST -0.012872
  • Average -0.0304469

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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.