sugang.snu.ac.kr/ 서버시간 @엔코 원자시계 수강신청 서버시간 NKO Atomic Clock, server time, time sync, accurate clock

엔코 원자시계

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

2026-03-30 21:01:09 KST -0.018290
2026-03-18 15:37:16 KST -0.040283
2026-03-03 08:29:16 KST -0.063831
2026-03-03 08:27:20 KST -0.029767
2026-02-26 08:53:20 KST -0.027761
2026-02-24 08:18:44 KST -0.021583
2026-02-02 08:29:21 KST 0.010235
2026-02-02 08:27:31 KST -0.031129
2026-02-02 08:26:19 KST -0.034201
2026-02-02 08:25:04 KST -0.058892
Average -0.0315502

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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.