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://nko.kr/?url=http://sugangdev.semyung.ac.kr/jsp/web2/WEB2220R.jsp server time check history

  • 2019-09-24 19:06:09 KST -0.003976
  • 2019-09-07 20:09:15 KST -0.020266
  • 2019-07-25 08:44:45 KST 0.143081
  • 2019-07-12 00:24:59 KST 0.217468
  • 2018-10-27 03:20:24 KST 0.159375
  • 2018-10-04 06:29:46 KST -0.088431
  • 2018-09-01 17:48:07 KST 0.166764
  • 2018-08-28 16:06:00 KST 0.026680
  • 2018-08-18 13:13:29 KST 0.195366
  • 2018-08-17 08:30:44 KST 0.092082
  • Average 0.0888143

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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.