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://for-s.seoultech.ac.kr/html/main.html server time check history

  • 2018-05-23 13:49:43 KST -0.496105
  • 2018-05-22 05:55:41 KST -0.357267
  • 2018-05-09 07:00:01 KST -0.660503
  • 2018-05-03 19:37:56 KST -1.024846
  • 2018-05-03 06:15:59 KST -0.900259
  • 2018-04-30 20:58:21 KST -0.829138
  • 2018-04-15 01:05:01 KST -0.199182
  • 2018-04-04 13:58:15 KST -1.199484
  • 2018-03-26 03:01:31 KST -4.032927
  • 2018-03-22 04:29:21 KST -0.644141
  • Average -1.0343852

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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.