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/websquare/websquare.jsp?w2xPath=/wq/login/hakbu_login.xml server time check history

  • 2021-09-03 08:12:29 KST -9.185499
  • 2021-09-03 07:58:54 KST -9.300372
  • 2021-09-03 07:57:54 KST -9.306296
  • 2021-09-03 07:55:50 KST -9.351602
  • 2021-09-03 07:53:26 KST -9.298475
  • 2021-09-03 07:49:54 KST -9.356896
  • 2021-09-03 07:48:32 KST -9.312850
  • 2021-09-03 07:47:19 KST -9.336838
  • 2021-09-03 07:45:45 KST -9.352115
  • 2021-09-03 07:44:43 KST -9.307489
  • Average -9.3108432

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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.