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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http://uwins.ulsan.ac.kr/LESN/B/MCB03U_01.aspx?param=2018|1|3|B^8X$0 server time check history

  • 2018-05-17 11:31:06 KST -0.478505
  • 2018-05-15 11:14:48 KST -0.491984
  • 2018-05-08 07:02:15 KST -0.820996
  • 2018-05-04 15:41:27 KST -0.770987
  • 2018-04-30 06:53:48 KST -0.561170
  • 2018-04-22 17:42:46 KST -0.449927
  • 2018-04-15 01:26:06 KST -1.041290
  • 2018-04-09 19:59:12 KST -0.924113
  • 2018-04-06 18:10:54 KST -0.627135
  • 2018-04-03 01:01:59 KST -0.567154
  • Average -0.6733261

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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.