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

  • 2019-03-14 07:24:57 KST -0.997609
  • 2019-03-07 15:45:59 KST -4.034831
  • 2019-03-07 12:58:02 KST -3.317702
  • 2019-03-07 10:49:01 KST -3.914141
  • 2019-03-07 08:52:07 KST -3.217775
  • 2019-03-07 08:30:15 KST -3.886544
  • 2019-03-07 08:18:53 KST -3.903021
  • 2019-03-07 08:17:37 KST -3.648760
  • 2019-03-07 08:16:16 KST -3.046708
  • 2019-03-07 08:14:14 KST -3.208748
  • Average -3.3175839

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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.