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 server time check history

  • 2019-11-19 10:08:09 KST -35.030525
  • 2019-11-19 07:52:31 KST -35.037830
  • 2019-11-19 07:50:29 KST -35.070723
  • 2019-11-19 07:49:19 KST -35.057599
  • 2019-11-19 07:36:54 KST -35.028381
  • 2019-11-09 13:59:38 KST -31.377856
  • 2019-11-09 13:58:20 KST -31.413265
  • 2019-09-05 07:59:15 KST -6.377200
  • 2019-09-05 07:55:59 KST -6.332838
  • 2019-09-05 07:49:55 KST -6.344472
  • Average -25.7070689

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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.