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
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우리말 English

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

  • 2020-09-03 07:49:35 KST 0.062507
  • 2019-12-11 00:05:28 KST 0.021883
  • 2019-12-11 00:03:56 KST 0.080530
  • 2019-11-13 15:28:02 KST 0.121833
  • 2019-10-29 15:51:40 KST -0.020307
  • 2019-08-08 09:29:53 KST 0.139775
  • 2019-08-08 09:18:13 KST 0.140628
  • 2019-04-25 10:49:59 KST 0.150696
  • 2019-03-29 15:30:47 KST 0.158881
  • 2019-03-28 00:59:18 KST 0.101261
  • Average 0.0957687

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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.