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://ysweb.yonsei.ac.kr server time check history

  • 2022-11-18 16:46:53 KST -0.017249
  • 2022-11-18 15:33:29 KST -0.067230
  • 2022-11-18 14:41:07 KST -0.007990
  • 2022-11-16 07:55:56 KST -0.070578
  • 2022-11-16 07:54:05 KST -0.062783
  • 2022-11-16 07:48:21 KST -0.056483
  • 2022-11-16 07:42:34 KST 0.128731
  • 2022-11-16 07:29:02 KST -0.035278
  • 2022-08-24 08:59:09 KST -3.087436
  • 2022-08-24 08:54:40 KST -3.001577
  • Average -0.6277873

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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.