NKO Atomic Clock

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

Chatroom by domain
우리말 English

http://nko.kr/?url=https://ysweb.yonsei.ac.kr/websquare/websquare.jsp?w2xPath=/wq/sg_main.xml server time check history

  • 2023-01-24 23:31:40 KST -0.035955
  • 2023-01-16 06:53:53 KST 0.017641
  • 2023-01-03 05:21:51 KST 0.074692
  • 2022-12-18 14:04:32 KST 0.047306
  • 2022-12-08 18:10:56 KST 0.017050
  • 2022-12-06 01:33:56 KST 0.094797
  • 2022-10-17 04:07:57 KST 0.018007
  • 2022-09-26 10:42:05 KST 0.003206
  • 2022-09-24 03:50:56 KST 0.096276
  • 2022-09-23 19:35:46 KST -0.008866
  • Average 0.0324154

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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.