NKO Atomic Clock

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

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우리말 English

http://www.hs.ac.kr/intro.html server time check history

  • 2022-06-23 02:56:42 KST -3.689559
  • 2022-06-10 11:13:57 KST -1.616463
  • 2021-05-17 11:10:04 KST -0.038506
  • 2021-05-17 09:26:06 KST 0.031771
  • 2020-02-27 01:26:09 KST -100.011053
  • 2019-09-11 06:21:02 KST -83.748906
  • 2019-08-07 05:31:36 KST -79.792929
  • 2019-07-13 06:30:37 KST -76.460481
  • 2018-11-02 17:20:24 KST -52.940723
  • 2018-11-01 21:23:35 KST -53.008767
  • Average -45.1275616

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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.