[1] [CITE@en[Automated Computer Time Service (ACTS) | NIST]], [TIME[2021-01-16T00:24:29.000Z]], [TIME[2021-01-16T07:47:14.230Z]] <https://www.nist.gov/time-distribution/automated-computer-time-service-acts>

[2] [[RFC 867]] 形式とは少し違う。