NKO Atomic Clock

Current time in milliseconds unit, dday remaining time calculator, elapsed time, stopwatch, server time checker

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우리말 English

https://www.sac.or.kr/ server time check history

  • 2023-09-19 14:19:15 KST -0.051068
  • 2023-09-19 14:18:01 KST -0.038768
  • 2023-09-19 13:30:59 KST -0.015548
  • 2023-07-18 14:45:20 KST 0.019917
  • 2023-02-14 12:53:07 KST -0.027450
  • 2023-02-02 14:59:08 KST -0.022205
  • 2023-02-02 14:57:55 KST -0.042664
  • 2022-11-19 00:43:37 KST -0.050973
  • 2022-11-15 10:26:30 KST 0.016125
  • 2022-07-14 12:43:33 KST -0.015268
  • Average -0.0227902

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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.