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/sg_main.xmlhttps://ysweb.yonsei.ac.kr/websquare/websquare.jsp?w2xPath=/wq/sg_main.xml server time check history

  • 2021-09-03 08:03:31 KST -1630623813.051700
  • 2021-09-03 07:56:24 KST -9.318826
  • 2021-09-03 07:24:01 KST -9.305168
  • 2021-09-03 07:20:02 KST -9.315429
  • 2021-09-03 07:18:20 KST -9.339514
  • 2021-08-25 08:38:55 KST -5.290509
  • 2021-03-05 07:58:20 KST -4.107930
  • 2021-02-23 08:49:02 KST -1.554654
  • 2020-08-13 08:53:34 KST -0.700331
  • 2020-05-26 07:59:19 KST -2.187647
  • Average -163062386.41717

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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.