NKO Atomic Clock

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

☞ Install NKO Atomic Clock(Android app) at Google Playstore
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우리말 English

https://instar.jj.ac.kr/ server time check history

  • 2020-11-22 12:39:34 KST -3.024483
  • 2020-08-03 02:17:08 KST -0.115534
  • 2020-07-26 08:08:26 KST -1.689770
  • 2020-03-16 10:57:45 KST -1.530632
  • 2020-03-13 10:58:38 KST -1.084223
  • 2020-03-13 10:04:12 KST -1.095538
  • 2020-03-13 10:00:51 KST -1.104405
  • 2020-01-29 10:46:57 KST 0.026029
  • 2019-08-29 10:14:46 KST -0.051850
  • 2019-03-04 10:59:08 KST -0.028511
  • Average -0.9698917

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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.