404 Day

April 4, Friday

404 Day is an unofficial Internet holiday celebrated on April 4. The name comes from the well-known HTTP 404 Not Found code, which indicates an error that occurs when trying to open a non-existent or deleted web page. 404 Day serves as a reminder of the importance of a free and accessible Internet, and also sparks discussions about censorship, user rights, and responsibility for content on the Internet.

How 404 Day is Celebrated
Online Activism. Digital rights organizations (such as the Electronic Frontier Foundation) hold events and campaigns dedicated to issues of freedom of speech and privacy on the Internet.

Educational Activities. Lectures and webinars on the importance of digital rights, online safety rules, and the history of the Internet.

Humorous Content. The online community actively shares memes, jokes and funny images related to the 404 error. This emphasizes the lightness and playfulness of the approach to the technical aspects of life in the digital world.

Technical activities. Developers and site administrators pay attention to improving the user experience: they create original 404 error pages that help users return to the site or offer interesting features such as games.

404 Day – days left: 72. Create Countdown to Event

404 Day in other years

2021 April 4, Sunday
2022 April 4, Monday
2023 April 4, Tuesday
2024 April 4, Thursday
2026 April 4, Saturday