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

  • 2021-09-03 14:54:29 KST -0.019340
  • 2021-09-03 08:53:26 KST -0.055072
  • 2021-09-03 08:52:26 KST -0.016879
  • 2021-09-03 08:51:07 KST -0.023720
  • 2021-09-03 07:54:22 KST -0.002776
  • 2021-09-03 07:52:06 KST -0.061520
  • 2021-08-25 08:59:05 KST -0.006077
  • 2021-08-25 08:58:02 KST -0.033570
  • 2021-08-25 08:53:59 KST -0.043036
  • 2021-08-25 08:33:04 KST -0.037098
  • Average -0.0299088

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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.