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

  • 2022-05-20 17:57:41 KST -1.191475
  • 2022-05-13 08:43:14 KST 0.157262
  • 2022-05-13 08:42:10 KST 0.118993
  • 2022-05-13 08:27:16 KST 0.424203
  • 2022-05-09 08:28:36 KST -0.138944
  • 2022-05-09 08:26:46 KST -0.180837
  • 2022-04-30 17:29:43 KST -0.023714
  • 2022-04-13 17:25:12 KST -0.014993
  • 2022-03-29 21:23:18 KST -0.535830
  • 2022-03-16 21:11:00 KST 0.021576
  • Average -0.1363759

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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.