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/login/hakbu_login.xml server time check history

  • 2020-11-17 07:54:03 KST -3.146793
  • 2020-11-17 07:51:42 KST -3.165893
  • 2020-11-17 07:44:18 KST -3.193193
  • 2020-11-17 07:37:04 KST -3.179486
  • 2020-11-17 06:57:40 KST -3.142504
  • 2020-11-17 06:47:31 KST -3.120972
  • 2020-11-16 23:07:59 KST -2.989657
  • 2020-11-16 23:06:12 KST -3.008099
  • 2020-11-16 23:05:10 KST -2.967232
  • 2020-10-23 02:57:42 KST -17.805069
  • Average -4.5718898

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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.