NKO Atomic Clock

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

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http://sugang.snu.ac.kr server time check history

  • 2022-09-11 17:34:15 KST -0.042795
  • 2022-09-07 12:47:52 KST -0.013888
  • 2022-09-06 09:48:33 KST -0.044184
  • 2022-09-06 09:47:30 KST -0.043247
  • 2022-09-05 16:52:34 KST -0.078400
  • 2022-09-01 16:53:36 KST -0.066425
  • 2022-09-01 13:03:25 KST -0.067859
  • 2022-09-01 13:00:44 KST -0.048263
  • 2022-09-01 12:58:34 KST -0.064721
  • 2022-09-01 12:57:32 KST -0.081459
  • Average -0.0551241

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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.