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

  • 2023-11-27 12:30:29 KST -0.025098
  • 2023-11-16 17:44:29 KST 0.024141
  • 2023-11-16 10:09:02 KST -0.020492
  • 2023-11-08 02:52:45 KST -0.030366
  • 2023-11-03 08:28:02 KST -0.021255
  • 2023-11-03 08:26:08 KST -0.013015
  • 2023-11-03 08:21:04 KST -0.050549
  • 2023-11-02 21:23:49 KST -0.025829
  • 2023-10-15 22:18:49 KST 0.003695
  • 2023-09-23 17:53:24 KST -0.081223
  • Average -0.0239991

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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.