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://historyexam.go.kr server time check history

  • 2023-09-18 10:09:35 KST -0.062973
  • 2022-08-11 09:45:59 KST -0.283966
  • 2022-08-11 09:43:38 KST -0.015446
  • 2022-07-28 23:09:44 KST -0.072984
  • 2022-07-22 23:01:38 KST -0.049531
  • 2022-07-18 22:43:18 KST -0.015117
  • 2022-07-17 22:27:57 KST 0.000190
  • 2022-07-17 22:25:45 KST 0.022338
  • 2022-07-14 10:11:16 KST -0.031878
  • 2022-07-14 09:57:29 KST -0.050911
  • Average -0.0560278

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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.