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

  • 2023-11-20 00:03:26 KST -0.068520
  • 2023-10-07 19:23:05 KST -0.044783
  • 2023-09-05 07:56:41 KST -0.045136
  • 2023-09-05 07:54:37 KST -0.066283
  • 2023-08-21 08:43:29 KST -0.059556
  • 2023-08-21 08:41:12 KST -0.108228
  • 2023-08-11 23:22:58 KST 0.006890
  • 2023-08-11 21:40:57 KST -0.071507
  • 2023-08-11 21:27:00 KST -0.037613
  • 2023-02-23 08:04:28 KST -0.071074
  • Average -0.056581

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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.