NKO Atomic Clock

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

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우리말 English

https://nr.energy.or.kr/ server time check history

  • 2023-09-28 12:52:53 KST -0.045244
  • 2023-09-27 09:54:29 KST -0.044636
  • 2023-09-27 09:51:22 KST -0.151642
  • 2023-09-27 09:24:00 KST -0.063849
  • 2023-09-27 09:03:50 KST -0.308735
  • 2023-09-26 09:50:24 KST -0.054436
  • 2023-09-26 09:12:34 KST -0.038110
  • 2023-09-26 09:06:27 KST -0.022311
  • 2023-09-26 09:05:10 KST 0.025679
  • 2023-09-25 12:51:16 KST -0.025599
  • Average -0.0728883

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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.