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

  • 2021-10-04 19:09:37 KST 0.032876
  • 2021-09-20 14:23:47 KST -0.032240
  • 2021-08-20 04:15:54 KST -0.029410
  • 2021-08-18 08:24:12 KST -0.029666
  • 2021-08-17 08:19:24 KST -0.018691
  • 2021-08-17 08:13:50 KST -0.028138
  • 2021-08-13 08:21:03 KST -0.042410
  • 2021-06-21 20:59:01 KST 0.000208
  • 2021-06-21 19:52:41 KST -0.035711
  • 2021-05-21 10:45:49 KST 0.005973
  • Average -0.0177209

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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.