NKO Atomic Clock

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

Chatroom by domain
우리말 English

https://portal.yonsei.ac.kr/main/ server time check history

  • 2022-05-23 07:59:00 KST -9.225154
  • 2022-03-04 07:58:26 KST -0.745135
  • 2022-03-04 07:57:16 KST -0.712721
  • 2022-03-04 07:55:34 KST -0.705578
  • 2022-03-04 07:54:17 KST -0.518368
  • 2022-03-04 07:52:05 KST -0.719568
  • 2022-03-04 07:49:26 KST -0.687163
  • 2022-03-04 07:46:06 KST -0.721465
  • 2022-03-04 07:45:02 KST -0.768791
  • 2022-03-04 07:42:05 KST -0.774147
  • Average -1.557809

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.