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://ysweb.yonsei.ac.kr/websquare/websquare.jsp?w2xPath=/wq/sg_main.xml server time check history

  • 2019-09-10 22:07:32 KST -8.822807
  • 2019-09-10 22:06:21 KST -8.522021
  • 2019-09-05 21:22:23 KST -6.442974
  • 2019-09-05 08:59:20 KST -6.380018
  • 2019-09-05 08:49:10 KST -5.995184
  • 2019-09-05 08:47:19 KST -6.346109
  • 2019-09-05 08:09:40 KST -1567638581.451300
  • 2019-09-05 08:08:03 KST -1567638483.851500
  • 2019-09-05 08:01:38 KST -8.016841
  • 2019-09-05 07:59:58 KST -6.334711
  • Average -313527712.21635

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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.