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://portal.catholic.ac.kr server time check history

  • 2020-01-14 22:11:58 KST 357.268049
  • 2019-08-01 08:23:40 KST 176.848801
  • 2019-08-01 08:19:37 KST 176.856574
  • 2019-08-01 08:16:38 KST 176.793264
  • 2019-06-25 08:07:59 KST 136.621588
  • 2019-02-25 06:06:53 KST 5.321787
  • 2019-02-19 08:54:21 KST -1.252864
  • 2019-02-19 08:46:01 KST -1.404799
  • 2018-08-03 08:59:14 KST 2.312880
  • 2018-08-03 08:56:29 KST 2.280167
  • Average 103.1645447

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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.