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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우리말 English

http://uis.sejong.ac.kr/ server time check history

  • 2019-08-19 11:12:42 KST -17.684872
  • 2019-06-25 15:54:05 KST -14.443187
  • 2018-08-24 09:58:20 KST -0.036970
  • 2018-08-24 09:49:06 KST -0.003825
  • 2018-08-21 09:37:21 KST -0.050595
  • 2018-08-20 09:54:33 KST 0.411003
  • 2017-08-21 20:22:26 KST -0.036793
  • 2017-08-21 09:23:50 KST -0.063293
  • 2017-02-28 09:32:45 KST -0.052173
  • 2016-08-18 09:45:26 KST -0.063976
  • Average -3.2024681

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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.