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

  • 2023-09-30 01:55:49 KST -0.093203
  • 2023-09-21 09:35:52 KST -0.034084
  • 2023-09-02 22:13:09 KST -0.028792
  • 2023-08-22 01:31:14 KST -0.011207
  • 2023-08-11 12:40:05 KST -0.026995
  • 2023-08-11 08:26:53 KST -0.064651
  • 2023-08-11 08:20:36 KST -0.003383
  • 2023-08-10 05:03:42 KST -0.062602
  • 2023-07-01 01:08:00 KST -0.069201
  • 2023-06-01 15:59:07 KST -0.048017
  • Average -0.0442135

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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.