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

  • 2020-03-19 19:40:04 KST -2.798244
  • 2020-03-19 08:54:07 KST -2.647949
  • 2020-03-19 08:42:04 KST -2.676961
  • 2020-03-19 08:30:17 KST -2.629201
  • 2020-03-19 08:08:48 KST -2.623179
  • 2020-03-19 08:06:54 KST -2.649664
  • 2020-03-19 08:04:53 KST -2.623175
  • 2020-03-19 08:01:17 KST -2.650216
  • 2020-03-19 07:59:40 KST -2.624820
  • 2020-03-19 07:58:39 KST -2.645607
  • Average -2.6569016

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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.