NKO Atomic Clock

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

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우리말 English

http://povis.postech.ac.kr/irj/portal server time check history

  • 2021-05-30 20:24:14 KST 0.008953
  • 2021-05-30 07:56:53 KST -0.076997
  • 2021-05-07 09:55:50 KST -0.059557
  • 2021-02-18 07:58:24 KST -0.027439
  • 2021-02-11 10:04:36 KST -0.021136
  • 2021-02-10 08:55:28 KST -0.063438
  • 2021-02-10 08:46:47 KST -0.051301
  • 2021-02-10 08:44:37 KST -0.013230
  • 2020-12-11 07:51:25 KST 0.010333
  • 2020-12-10 09:11:54 KST 0.000937
  • Average -0.0292875

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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.