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/sg_main.xml server time check history

  • 2022-09-25 16:06:42 KST -18.309640
  • 2022-09-17 01:57:04 KST -14.192114
  • 2022-09-15 02:09:43 KST -13.281528
  • 2022-09-07 20:56:49 KST -9.803102
  • 2022-09-05 08:53:42 KST -8.649178
  • 2022-09-05 08:52:01 KST -8.616644
  • 2022-09-05 08:08:32 KST -8.637741
  • 2022-09-05 08:07:25 KST -8.644379
  • 2022-09-05 08:04:57 KST -8.664620
  • 2022-09-05 08:03:24 KST -8.649117
  • Average -10.7448063

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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.