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://sugangdev.semyung.ac.kr/jsp/web2/WEB2220R.jsp server time check history

  • 2020-02-14 20:07:20 KST -0.067515
  • 2019-08-18 17:22:31 KST -0.069737
  • 2019-07-25 12:57:20 KST -0.055567
  • 2019-02-19 08:13:04 KST -47.311743
  • 2018-08-17 12:02:58 KST -20.495896
  • 2018-05-13 08:58:06 KST -135.725378
  • 2018-04-27 14:10:11 KST -95.011594
  • 2018-03-22 02:00:35 KST -113.605101
  • 2018-03-15 17:05:10 KST -81.925538
  • 2018-03-06 17:19:03 KST -79.199326
  • Average -57.3467395

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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.