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

https://ysweb.yonsei.ac.kr/websquare/websquare.jsp?w2xPath=/wq/login/hakbu_login.xml server time check history

  • 2020-06-10 07:40:07 KST -4.753064
  • 2020-05-26 07:56:53 KST -2.219715
  • 2020-05-26 07:54:17 KST -2.183217
  • 2020-05-26 07:45:56 KST -2.198879
  • 2020-05-26 07:12:47 KST -2.223198
  • 2020-05-26 06:52:38 KST -2.194432
  • 2020-05-09 14:19:24 KST -12.774371
  • 2020-03-20 14:10:01 KST -3.152026
  • 2020-03-19 07:59:16 KST -2.658011
  • 2020-03-19 07:58:14 KST -2.635227
  • Average -3.699214

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.