NKO Atomic Clock

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

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https://for-s.seoultech.ac.kr/view/login.jsp server time check history

  • 2022-08-16 11:39:12 KST -0.941378
  • 2022-08-16 09:22:11 KST -0.944153
  • 2022-08-16 09:20:25 KST -0.979737
  • 2022-02-06 01:02:13 KST -0.613886
  • 2021-08-17 09:54:27 KST -0.406586
  • 2021-08-17 09:30:08 KST -0.422521
  • 2021-02-15 09:25:04 KST -0.599998
  • 2021-02-15 08:58:05 KST -0.581562
  • 2021-02-15 08:56:59 KST -0.629327
  • 2021-02-15 08:44:37 KST -0.553809
  • Average -0.6672957

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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.