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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http://www.yonsei.ac.kr/sc/ server time check history

  • 2026-10-25 07:32:06 KST -0.037051
  • 2026-10-18 08:25:37 KST -0.050183
  • 2026-03-06 23:27:50 KST -0.042922
  • 2026-03-06 17:34:20 KST -0.070270
  • 2026-02-28 18:39:42 KST -0.020151
  • 2021-03-11 07:40:27 KST -0.022243
  • 2021-03-11 07:37:51 KST -0.027008
  • 2020-07-12 13:16:25 KST -0.018776
  • 2019-12-10 20:17:17 KST -0.072805
  • 2019-05-19 22:53:38 KST -0.038923
  • Average -0.0400332

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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.