Open Source Friday
Noun · Hacker Culture
Definitions
A recurring practice of dedicating Friday work time to contributing to open source projects, either upstream or community-oriented. It reflects a cultural effort to make open source support part of routine engineering work rather than something done only after hours.
In plain English: A routine of using Friday time to contribute to open source projects.
Example: "Open Source Friday gave the infra team a real mechanism for upstreaming patches instead of maintaining local diffs forever."