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://portal.yonsei.ac.kr server time check history

  • 2020-07-13 16:16:32 KST -0.029627
  • 2020-07-13 15:56:28 KST -0.026247
  • 2020-06-10 07:56:20 KST -0.017893
  • 2020-06-10 07:46:50 KST -0.040918
  • 2020-05-26 07:37:08 KST -0.025424
  • 2020-05-26 07:33:59 KST -0.032222
  • 2020-05-26 07:32:04 KST -0.011019
  • 2020-05-26 07:20:47 KST -0.044085
  • 2020-03-19 07:59:13 KST -0.068364
  • 2020-03-19 07:57:08 KST -0.032546
  • Average -0.0328345

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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.