NKO Atomic Clock

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

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http://uwins.ulsan.ac.kr/LESN/B/MCB03U.aspx?MenuID=MCB03U!1 server time check history

  • 2021-12-04 11:03:15 KST -0.926968
  • 2021-07-01 13:46:05 KST -0.878753
  • 2020-11-25 21:36:42 KST -0.517918
  • 2020-08-11 08:31:32 KST -0.896254
  • 2020-08-11 08:27:21 KST -0.646291
  • 2020-03-12 19:36:48 KST -7.885448
  • 2020-02-10 10:55:19 KST -0.195587
  • 2020-02-10 10:49:38 KST -0.396889
  • 2019-08-29 19:04:54 KST 23.743541
  • 2019-08-07 08:52:39 KST -9.606504
  • Average 0.1792929

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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.