NKO Atomic Clock

Current time in milliseconds unit, dday remaining time calculator, elapsed time, stopwatch, server time checker

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우리말 English

http://cdn.topik.go.kr/intro_index2.html server time check history

  • 2023-12-01 00:43:15 KST -0.034312
  • 2023-11-29 17:35:40 KST -0.009262
  • 2023-11-21 00:09:21 KST -0.021525
  • 2023-09-15 20:55:56 KST -0.054266
  • 2023-09-14 16:59:31 KST -0.026121
  • 2023-09-13 18:10:33 KST -0.035618
  • 2023-09-13 18:08:08 KST -0.071521
  • 2023-09-06 09:25:28 KST -0.050890
  • 2023-09-05 09:58:54 KST -0.033293
  • 2023-09-05 09:57:49 KST -0.039423
  • Average -0.0376231

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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.