NKO Atomic Clock

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

☞ Install NKO Atomic Clock(Android app) at Google Playstore
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우리말 English

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

  • 2018-11-11 19:53:00 KST -29.388602
  • 2018-10-15 00:11:40 KST -16.331007
  • 2018-10-15 00:07:49 KST -16.380256
  • 2018-10-15 00:04:17 KST -1.273083
  • 2018-10-15 00:02:07 KST -16.297558
  • 2018-10-02 14:29:27 KST -8.400062
  • 2018-09-30 15:08:26 KST -9.548790
  • 2018-09-08 03:03:33 KST -0.663005
  • 2018-09-06 11:27:48 KST -0.055320
  • 2018-09-06 10:45:33 KST -0.022207
  • Average -9.835989

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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.