On Fri, Jul 18, 2025, 9:02 PM David Arnold <davida@pobox.com> wrote:
On 19 Jul 2025, at 12:44, Tom Perrine <tom.perrine+tuhs@gmail.com> wrote:

<…>

I think there may also be a reference to Flag Day in the original printed Hacker's Dictionary, and I think in the Jargon file from which it was derived? I don't have any old copies of either around to check

It’s in the “New Hackers Dicrionary” from 1991:

https://www.dropbox.com/scl/fi/rwgb1ajk4n3sfkb2ejbd6/Photo-19-7-2025-12-54-49.jpg?rlkey=h7oujitglxgjo81ha1hfwhrg8&st=21m4tev8&dl=0



RFC 801 documents the NCP to TCP flag day of Jan 1, 1982. But doesn’t use that term despite latter day documents using that term.

Warner