Daytime Protocol
RFC 867, “Daytime Protocol”, is an Internet Standard document published in May 1983 by J. Postel. The canonical text is published by the RFC Editor.
Abstract
This RFC specifies a standard for the ARPA Internet community. Hosts on the ARPA Internet that choose to implement a Daytime Protocol are expected to adopt and implement this standard. The Daytime service simply sends the current date and time as a character string without regard to the input.
What “Internet Standard” means
A mature, widely-implemented specification that has completed the full IETF standards process — the highest maturity level on the standards track.
The canonical text of RFC 867 is hosted at rfc-editor.org. Available in TXT,HTML.