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

http://osan.riroschool.kr/ server time check history

  • 2020-04-08 04:37:06 KST 0.019079
  • 2019-10-25 10:58:09 KST -0.007673
  • 2019-10-24 22:36:44 KST 0.008108
  • 2019-10-24 10:58:03 KST -0.002535
  • 2019-10-15 15:34:29 KST -0.016498
  • 2019-10-08 22:52:58 KST -0.061981
  • 2019-06-27 13:56:19 KST -0.010251
  • 2019-06-27 13:54:57 KST 0.015875
  • 2019-06-11 13:51:50 KST -0.212408
  • 2019-06-05 22:52:59 KST -0.064666
  • Average -0.033295

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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.