NKO Atomic Clock

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

☞ Install NKO Atomic Clock(Android app) at Google Playstore
Chatroom by domain
우리말 English

http://portal.yonsei.ac.kr server time check history

  • 2021-03-05 07:59:25 KST -0.048848
  • 2021-03-05 07:53:24 KST -0.033583
  • 2021-03-05 07:52:12 KST -0.068956
  • 2021-03-05 07:34:23 KST -0.012292
  • 2021-03-05 07:12:27 KST -0.003401
  • 2021-03-05 06:43:32 KST -0.013243
  • 2021-02-18 08:52:05 KST -0.091120
  • 2021-02-18 08:47:02 KST -0.050833
  • 2021-02-18 08:45:55 KST -0.078876
  • 2021-02-18 08:44:48 KST -0.039435
  • Average -0.0440587

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.