NKO Atomic Clock

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


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우리말 English

https://openapi.kftc.or.kr/ server time check history

  • 2026-10-25 11:02:09 KST 0.041039
  • 2026-10-17 05:55:40 KST 0.025421
  • 2026-10-17 03:47:37 KST -0.030950
  • 2026-10-17 00:05:45 KST -0.027214
  • 2024-08-10 00:41:54 KST -0.060121
  • 2024-08-09 08:53:19 KST 0.008284
  • 2024-08-09 08:51:53 KST -0.074773
  • Average -0.016902

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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.

Information

# 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.