NKO Atomic Clock

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

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http://sugang.knu.ac.kr/Sugang/cour/lectReq/onlineLectReq/list.action server time check history

  • 2022-08-30 04:14:45 KST 0.000129
  • 2022-08-29 05:16:44 KST -0.030643
  • 2021-12-04 07:43:18 KST 0.010757
  • 2020-05-06 14:48:34 KST -0.039053
  • 2020-01-21 18:57:04 KST -0.000003
  • 2019-11-06 15:17:33 KST 0.010947
  • 2019-09-03 11:55:12 KST -0.374143
  • 2019-08-08 17:30:43 KST 0.005899
  • 2019-08-06 15:58:22 KST -0.046557
  • 2019-08-06 15:55:48 KST -0.256833
  • Average -0.07195

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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.