NKO Atomic Clock

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

Chatroom by domain
우리말 English

https://ysweb.yonsei.ac.kr/websquare/websquare.jsp?w2xPath=/wq/login/hakbu_login.xml server time check history

  • 2023-09-19 08:46:40 KST -0.149974
  • 2023-09-02 09:29:58 KST -0.075903
  • 2023-08-09 00:58:31 KST -0.173036
  • 2022-09-05 07:58:13 KST -8.672431
  • 2022-09-05 07:57:09 KST -8.635041
  • 2022-09-05 07:55:25 KST -8.593949
  • 2022-09-05 07:49:07 KST -8.601392
  • 2022-09-05 07:48:05 KST -8.574617
  • 2022-09-05 07:33:16 KST -8.642593
  • 2022-09-05 07:27:10 KST -8.626118
  • Average -6.0745054

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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.