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

  • 2019-09-12 14:04:14 KST -0.053516
  • 2019-09-05 07:53:06 KST -0.063675
  • 2019-09-05 07:50:52 KST -0.059513
  • 2019-09-05 07:49:26 KST -0.039909
  • 2019-09-05 07:44:17 KST -0.012362
  • 2019-09-05 07:43:05 KST -0.030453
  • 2019-09-05 07:40:37 KST -0.021143
  • 2019-09-05 07:39:36 KST -0.019878
  • 2019-09-05 07:36:22 KST -0.024030
  • 2019-08-27 08:40:03 KST 0.023480
  • Average -0.0300999

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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.