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://yeyak.seoul.go.kr server time check history

  • 2023-01-25 08:35:24 KST -0.064568
  • 2023-01-25 06:53:50 KST -0.010320
  • 2021-10-29 13:50:39 KST -0.014844
  • 2021-10-22 13:50:49 KST -0.048487
  • 2021-10-19 13:54:15 KST -0.054034
  • 2021-10-19 13:46:13 KST -0.052156
  • 2021-10-19 13:43:22 KST -0.067469
  • 2021-07-10 13:56:51 KST -0.053433
  • 2021-05-25 09:08:31 KST -0.065331
  • 2021-05-25 08:54:21 KST -0.007378
  • Average -0.043802

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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.