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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https://sugang.snu.ac.kr/sugang/co/co010.action server time check history

  • 2026-11-07 15:07:55 KST -0.004396
  • 2026-09-02 14:38:26 KST 0.025827
  • 2026-08-28 10:39:07 KST -0.044177
  • 2026-08-28 09:57:24 KST -0.103583
  • 2026-08-28 09:55:28 KST 0.212434
  • 2026-08-13 22:22:43 KST 0.051808
  • 2026-08-13 20:11:08 KST -0.065365
  • 2026-08-12 20:42:47 KST -0.012140
  • 2026-08-12 20:40:52 KST -0.023462
  • 2026-08-10 08:26:12 KST -0.012537
  • Average 0.0024409

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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.

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.