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

  • 2017-10-13 02:06:42 KST -0.828088
  • 2017-10-11 21:56:48 KST -1.176769
  • 2017-10-11 19:57:34 KST -0.937898
  • 2017-09-18 19:53:17 KST -0.446709
  • 2017-09-18 07:58:01 KST -0.336656
  • 2017-09-17 23:50:52 KST -1.355304
  • 2017-09-17 02:06:19 KST -0.951129
  • 2017-09-16 02:10:25 KST -0.798855
  • 2017-09-15 23:50:43 KST -0.384271
  • 2017-09-15 13:48:13 KST -1.104686
  • Average -0.8320365

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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.