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://povis.postech.ac.kr/irj/portal/ server time check history

  • 2018-10-04 17:50:28 KST -0.007514
  • 2018-09-30 09:08:05 KST -0.002030
  • 2018-09-10 14:48:41 KST -0.030223
  • 2018-09-10 03:44:24 KST -0.063929
  • 2018-09-05 08:51:20 KST -0.017831
  • 2018-07-28 14:09:09 KST -0.030534
  • 2018-06-23 13:21:34 KST -0.031292
  • 2018-05-31 08:59:00 KST -0.076743
  • 2018-05-24 07:20:12 KST -0.037026
  • 2018-05-24 07:18:55 KST 0.007390
  • Average -0.0289732

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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.