NKO Atomic Clock

Current time in milliseconds unit, dday remaining time calculator, elapsed time, stopwatch, server time checker

Chatroom by domain
우리말 English

https://ysweb.yonsei.ac.kr/ server time check history

  • 2022-11-23 07:57:05 KST 0.178334
  • 2022-11-23 07:54:34 KST -0.008521
  • 2022-11-23 07:52:55 KST -0.043897
  • 2022-11-23 07:51:29 KST -0.020020
  • 2022-11-23 07:49:57 KST 0.004815
  • 2022-11-23 07:48:20 KST -0.067682
  • 2022-11-23 07:45:18 KST -0.065766
  • 2022-11-16 07:53:15 KST -0.015051
  • 2022-09-30 17:05:36 KST -20.618287
  • 2022-09-26 02:14:28 KST -18.407645
  • Average -3.906372

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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.