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

  • 2020-06-10 07:59:45 KST -4.809737
  • 2020-06-10 07:58:28 KST -4.729483
  • 2020-06-10 07:57:12 KST -4.797206
  • 2020-06-10 07:56:05 KST -4.731853
  • 2020-06-10 07:55:02 KST -4.761610
  • 2020-06-10 07:53:59 KST -4.789778
  • 2020-06-10 07:52:41 KST -4.778769
  • 2020-06-10 07:51:41 KST -4.780301
  • 2020-06-10 07:50:19 KST -4.780666
  • 2020-06-10 07:49:16 KST -4.785048
  • Average -4.7744451

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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.