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/index2.jsp server time check history

  • 2019-10-15 13:57:03 KST -21.997782
  • 2019-09-28 13:55:07 KST -15.463089
  • 2019-09-25 13:48:54 KST -14.239379
  • 2019-09-24 13:57:48 KST -13.827217
  • 2019-09-24 13:49:44 KST -13.832579
  • 2019-09-17 13:57:53 KST -11.186682
  • 2019-09-17 13:55:14 KST -11.102622
  • 2019-09-16 13:58:13 KST -10.683584
  • 2019-09-16 13:56:41 KST -11.079674
  • 2019-09-16 13:41:12 KST -10.683318
  • Average -13.4095926

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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.