NKO Atomic Clock

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

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https://total.yongin.ac.kr/stdt/request/registercourse/list.do server time check history

  • 2022-08-17 09:54:50 KST -1.311833
  • 2022-08-16 09:55:44 KST -0.417983
  • 2022-02-24 09:41:40 KST -0.170440
  • 2022-02-24 09:40:13 KST -0.161541
  • 2022-02-24 09:27:45 KST -0.176031
  • 2022-02-24 09:25:30 KST -0.184233
  • 2022-02-24 09:14:14 KST -0.182110
  • 2021-08-18 09:55:33 KST 0.004719
  • 2021-08-18 09:47:57 KST 0.031048
  • 2021-06-20 02:51:57 KST -0.014910
  • Average -0.2583314

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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.