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://space.yonsei.ac.kr/reservation.php?mid=K02 server time check history

  • 2019-06-16 23:43:07 KST -0.288707
  • 2019-06-02 15:47:41 KST 28.080608
  • 2019-05-15 23:57:22 KST -0.972191
  • 2019-05-06 23:47:57 KST -0.290940
  • 2019-05-06 23:46:33 KST -0.341487
  • 2019-05-01 23:59:41 KST -0.111177
  • 2019-05-01 23:54:59 KST -0.669805
  • 2019-03-28 03:04:33 KST -0.303427
  • 2019-03-27 23:56:17 KST -0.938902
  • 2019-03-20 23:57:36 KST -0.619939
  • Average 2.3544033

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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.