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://underwood1.yonsei.ac.kr:8443/haksa/websquare/websquare.html?w2xPath=/haksa/wq/main.xml server time check history

  • 2019-11-12 23:58:20 KST -33.590232
  • 2019-11-12 23:56:40 KST -33.600938
  • 2019-10-23 23:59:15 KST -26.101738
  • 2019-10-23 23:57:20 KST -26.099187
  • 2019-10-08 08:36:00 KST -20.149818
  • 2019-10-07 23:59:32 KST -20.053537
  • 2019-10-05 23:59:37 KST -19.264984
  • 2019-09-24 23:50:12 KST -14.905932
  • 2019-09-22 23:59:10 KST -14.131747
  • 2019-09-22 23:58:09 KST -14.195508
  • Average -22.2093621

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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.