Historical dates
April 30, 1993: the Web's public-domain milestone
A software-release date is a specific event, not the beginning of every part of the Internet.
Say which milestone you mean
CERN records April 30, 1993, as the date it placed World Wide Web software in the public domain. That is a specific licensing and release milestone. It should not be rewritten as the day the Internet was invented or the moment the entire Web appeared. A useful anniversary explanation begins by identifying the event precisely enough for a reader to find the underlying record.
Follow the recurring date
April 30 and May 7 are a week apart. In any year their recurring anniversaries share a weekday. In 2026 both are Thursday, in 2027 both are Friday, and in 2028 both are Sunday. This permanent relationship follows from the dates' position after February. It does not depend on whether a browser, website or technology was first created in the same year as CERN's release.
Let a discovery lead to a better question
Historical technologies often have proposals, prototypes, demonstrations and public releases on different dates. Rather than selecting whichever milestone produces a match, state the question first and consult the source. If a friend shares an April 30 birthday, the anniversary can open a conversation about the Web without suggesting a personal connection to its creators. The calendar adds a verifiable detail; the documentary history explains why the selected day is worth remembering.
Sources and checking
Source facts checked 2026-10-18. Editorial draft; final review pending. Calendar comparisons are our calculations. A source supports the recorded date, not a personal relationship or endorsement.
- CERN: Licensing the Web ↗
Public-domain software milestone April 30, 1993.
- US Naval Observatory: Leap Years ↗
Gregorian leap rule; weekday conclusions are our calculations.