National FreeBSD Day2026 · Date · History
The FreeBSD Foundation states that FreeBSD Day is celebrated on June 19, marking the June 19, 1993 agreement on the FreeBSD name; National Day Calendar states that the Foundation founded the day and its Registrar declared it an annual observance beginning in 2017.
About National FreeBSD Day
National FreeBSD Day is celebrated on June 19 as a community observance recognizing FreeBSD and its continuing role in open-source technology.
The FreeBSD Foundation explains that June 19 recalls the 1993 email discussion in which the FreeBSD name was agreed upon.
Why National FreeBSD Day matters
The day highlights the developers, contributors, users and supporters connected with the FreeBSD project.
It is a community and technology observance rather than a government public holiday.
History of National FreeBSD Day
On June 19, 1993, an early BSD mailing-list discussion settled on the name “FreeBSD” for the emerging project.
National Day Calendar states that the FreeBSD Foundation founded National FreeBSD Day and that its Registrar declared it an annual observance beginning in 2017.
The FreeBSD Foundation currently maintains a FreeBSD Day page and invites community participation around June 19.
How the observance developed
This timeline uses documented milestones from reviewed sources. Missing stages are left out rather than guessed.
FreeBSD Foundation
National Day Calendar states that the FreeBSD Foundation founded National FreeBSD Day.
Registrar at National Day Calendar
National Day Calendar new-day proclamation / annual declaration
FreeBSD Foundation
The Foundation currently maintains FreeBSD Day programming and participation material.
What the evidence establishes
Confirmed institutional roles and milestones are shown first. Details that could not be established from the reviewed sources are listed separately below.
3 fields not established in reviewed sources
How to Observe National FreeBSD Day
Learn about FreeBSD’s history and open-source development model from the FreeBSD Project or Foundation.
Explore documentation, talks or community resources relevant to FreeBSD.
Share a FreeBSD story or recognize contributors whose work has supported the project.
Contribute to an open-source project in a way that matches your skills and interests.
National FreeBSD Day Facts
National FreeBSD Day is observed on June 19.
The date is tied to the June 19, 1993 agreement on the FreeBSD name.
The FreeBSD Foundation is identified as the founder of the observance.
National Day Calendar says its Registrar declared the day to be celebrated annually beginning in 2017.
The observance is community-led, not a statutory public holiday.
Topic and context
What this page does not assume
- Keep the source-defined country, community, organizer or institutional scope; do not silently broaden it.
- Do not treat the title alone as proof of government recognition or public-holiday status.
- Do not add a creator, founding story or origin claim unless the supporting evidence establishes it.
Evidence & sources
Sources used across the guide are gathered here. Labels show how each source supports the page, and contextual references are kept separate from primary evidence.
FreeBSD Foundation — FreeBSD Day (opens in a new tab)
Foundation Dedicated Page
National Day Calendar — New Day Proclamation: National FreeBSD Day (opens in a new tab)
Registrar Proclamation
Understand it, compare it, then explore further
Start with the most common factual questions, then compare closely related observances and explore useful connections.
Frequently asked questions
When is National FreeBSD Day?
19 June The documented recurrence rule is: 19 June.
Does National FreeBSD Day fall on the same date every year?
Yes. It uses a fixed annual date unless stronger evidence changes the pattern.
Is National FreeBSD Day an official public holiday?
The reviewed sources verify it within this scope: FreeBSD community and open-source software observance. That recognition does not by itself make it a statutory public holiday; the site only makes public-holiday claims when reliable evidence explicitly does so.
Who established or recognizes National FreeBSD Day?
The reviewed sources identify Registrar at National Day Calendar as the proclaiming or establishing body. The proposer or originator is recorded separately as FreeBSD Foundation. Current facilitation or coordination is recorded as FreeBSD Foundation.
Is National FreeBSD Day international or country-specific?
No single country is assigned to this observance. Its documented scope is: FreeBSD community and open-source software observance. Use that scope rather than assuming worldwide or country-specific status.
How is this page verified?
The factual information is checked against reviewed sources, including the date pattern, scope and institutional history. This page was checked on 2026-10-03.
When is National FreeBSD Day?
It is celebrated on June 19.
Why June 19?
The FreeBSD Foundation ties the date to June 19, 1993, when the FreeBSD name was agreed upon in an early project discussion.
Who founded the observance?
National Day Calendar identifies the FreeBSD Foundation as the founder and says its Registrar declared the day annual beginning in 2017.
Is it a government holiday?
No; the reviewed sources describe a community and technology observance.
Other observances on June 19
These observances are also listed on June 19, 2027.
International Day for the Elimination of Sexual Violence in Conflict
A/RES/69/293
International Surfing Day
Surfrider Foundation states that International Surfing Day began in 2005; its history records Surfrider Foundation and Surfing Magazine declaring June 20 International Surfing Day, while cu…
Natalicio de José Gervasio Artigas
Uruguay’s Ministry of Education and Culture commemorates José Gervasio Artigas’s birth on 19 June.
National Garfield the Cat Day
National Day Archives lists National Garfield the Cat Day on June 19; this matches Garfield’s widely recognized June 19 birthday, but the guide remains narrowly registry/date scoped.
World Sickle Cell Day
United Nations General Assembly resolution A/RES/63/237