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://sugang.snu.ac.kr server time check history

  • 2021-05-10 08:28:41 KST -0.026998
  • 2021-05-10 08:27:20 KST -0.020795
  • 2021-05-10 08:22:30 KST -0.011934
  • 2021-05-10 08:11:21 KST -0.000371
  • 2021-05-10 08:03:55 KST 0.006171
  • 2021-05-10 07:33:59 KST -0.062530
  • 2021-04-16 22:41:22 KST -1.104028
  • 2021-04-13 12:08:40 KST -1.179111
  • 2021-03-26 15:14:56 KST -1.198610
  • 2021-03-04 08:46:08 KST -0.970378
  • Average -0.4568584

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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.