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/busTest/notice2.jsp server time check history

  • 2020-01-16 03:23:18 KST -6.287410
  • 2019-10-30 13:59:37 KST -27.717450
  • 2019-10-05 13:57:33 KST -18.195410
  • 2019-10-05 13:56:24 KST -18.224826
  • 2019-09-29 13:59:42 KST -15.885811
  • 2019-09-29 13:58:26 KST -15.836521
  • 2019-09-29 13:57:14 KST -15.872311
  • 2019-09-29 13:56:10 KST -15.865413
  • 2019-09-29 13:51:55 KST -15.866430
  • 2019-09-08 13:56:35 KST -7.791453
  • Average -15.7543035

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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.