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

  • 2018-11-16 00:26:22 KST -0.536920
  • 2018-11-08 00:09:39 KST -0.736954
  • 2018-11-06 00:02:34 KST -0.764030
  • 2018-11-06 00:00:01 KST -0.785906
  • 2018-11-03 00:19:06 KST -0.913553
  • 2018-11-01 19:57:11 KST -0.241111
  • 2018-11-01 02:53:51 KST -0.080716
  • 2018-10-31 02:08:48 KST -0.834999
  • 2018-10-29 02:55:33 KST -0.666270
  • 2018-10-25 00:10:16 KST -0.536515
  • Average -0.6096974

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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.