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/websquare/websquare.jsp?w2xPath=/wq/sg_main.xml server time check history

  • 2022-05-23 08:56:20 KST -10.503459
  • 2022-05-23 08:55:18 KST -10.499197
  • 2022-05-23 08:04:08 KST -10.211842
  • 2022-05-23 07:58:54 KST -10.492377
  • 2022-05-23 07:57:48 KST -10.512497
  • 2022-05-23 07:56:43 KST -10.494119
  • 2022-05-23 07:55:43 KST -10.493402
  • 2022-05-23 07:54:39 KST -10.452327
  • 2022-05-23 07:53:38 KST -10.485573
  • 2022-05-23 07:52:29 KST -10.464747
  • Average -10.460954

Recent view

Popular checks

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.