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

https://portal.sejong.ac.kr/jsp/login/uisloginSSL.jsp server time check history

  • 2019-11-06 16:24:11 KST -0.400780
  • 2019-02-28 08:49:21 KST -0.515774
  • 2019-02-21 09:48:39 KST -0.076261
  • 2019-02-21 09:37:57 KST -0.059538
  • 2019-02-20 09:50:51 KST -0.026027
  • 2019-02-18 09:48:20 KST -0.111564
  • 2019-02-18 09:43:59 KST -0.302835
  • 2019-02-18 09:41:19 KST -1550450479.906700
  • 2019-02-18 09:34:49 KST -0.245742
  • 2019-02-18 09:12:49 KST -0.453155
  • Average -155045048.20984

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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.