National Day of Reason2026 · Date · History · Messages
The current National Day of Reason campaign and American Humanist Association identify May 4 as the annual observance date; a 2026 U.S. House resolution also recognizes May 4, 2026 without creating a federal holiday.
About National Day of Reason
National Day of Reason is a United States secular civic observance centered on reason, critical thinking, scientific inquiry and free inquiry in public life.
The American Humanist Association currently presents the observance as an annual May 4 event and maintains the campaign with other secular and humanist partners.
Why National Day of Reason matters
The observance is intended as a civic and educational occasion for discussing evidence, critical thought and the constitutional principle that government should not prefer one religious viewpoint over others or over nonbelief.
It is an organizer-created observance rather than a federal public holiday. Congressional resolutions and state or local proclamations are recognition actions and should not be confused with a permanent federal holiday statute.
History of National Day of Reason
American Humanist Association material from 2013 says that the AHA and the Washington Area Secular Humanists created the National Day of Reason in response to the federally supported National Day of Prayer.
Older AHA materials document the observance on the first Thursday in May, in parallel with the National Day of Prayer. In 2015, AHA described House Resolution 228 as the first U.S. House resolution introduced to honor the National Day of Reason.
By 2022, AHA-backed congressional resolutions were using May 4 rather than the first-Thursday rule, and the current AHA program page says the National Day of Reason is held on May 4 each year. The reviewed sources do not establish a formal date-change instrument or a reason for selecting May 4.
AHA publications contain inconsistent historical shorthand about when celebration began, while older campaign material reproduced elsewhere dates the joint AHA/Washington Area Secular Humanists campaign launch to 2003. Because that exact first-observance history is not cleanly resolved in current first-party sources, this guide does not assert a structured first-observance date.
How the observance developed
This timeline uses documented milestones from reviewed sources. Missing stages are left out rather than guessed.
American Humanist Association and Washington Area Secular Humanists
AHA’s 2013 first-party history explicitly says the American Humanist Association, together with the Washington Area Secular Humanists, created the National Day of Reason.
American Humanist Association and Washington Area Secular Humanists
The reviewed AHA history describes an organizer-created observance; no government body is treated as the original establishing authority.
AHA describes H. Res. 228 as the first resolution introduced in the U.S. House to honor the National Day of Reason; it did not create a permanent federal public holiday.
U.S. House of Representatives sponsors · House Resolution 228
The AHA-backed 2022 resolution identified May 4, 2022 as National Day of Reason rather than using the historical first-Thursday rule; current AHA material now states May 4 each year.
American Humanist Association and congressional sponsors · 2022 National Day of Reason resolution campaign
The introduced resolution expressed support for designating May 4, 2026 as National Day of Reason and was referred to committee; it is stored as recognition activity, not as a founding law.
Members of the 119th U.S. House of Representatives · H. Res. 1266
American Humanist Association / National Day of Reason campaign
AHA maintains the current National Day of Reason program page and directs participants to the National Day of Reason campaign for organizing resources.
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.
5 fields not established in reviewed sources
Later institutional actions
Later recognition, renaming, mergers or date changes are kept separate from original establishment.
How to Observe National Day of Reason
Choose a public claim or news topic and practice checking the original evidence, source quality, uncertainty and alternative explanations before reaching a conclusion.
Visit a library, museum, science center or public lecture and explore how evidence is tested, corrected and communicated.
Organize a respectful discussion about critical thinking, scientific literacy, freedom of inquiry or the constitutional relationship between religion and government.
Take part in a community-service or educational activity that reflects the observance’s long-running emphasis on constructive civic participation.
National Day of Reason Facts
The current American Humanist Association page places National Day of Reason on May 4 each year.
AHA material identifies the American Humanist Association and Washington Area Secular Humanists as the organizations that created the observance.
Older organizer material used the first Thursday in May, the same day as the National Day of Prayer.
AHA says House Resolution 228 in 2015 was the first U.S. For National Day of Reason, House resolution introduced to honor the National Day of Reason.
National Day of Reason is not a permanent federal public holiday.
National Day of Reason Messages
May National Day of Reason encourage careful thinking, good questions and a willingness to follow evidence wherever it leads.
Wishing everyone marking National Day of Reason a day of curiosity, respectful discussion and thoughtful inquiry.
May today be a reminder that evidence, empathy and open inquiry can work together when we face difficult questions.
May this observance inspire constructive conversation, intellectual humility and a deeper appreciation for critical thinking.
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.
U.S. Congress / GovInfo — 2026 National Day of Reason resolution (opens in a new tab)
Official Government
American Humanist Association — 2013 creator/history statement (opens in a new tab)
American Humanist Association — 2015 first House resolution and first-Thursday recurrence (opens in a new tab)
American Humanist Association — 2022 May 4 resolution announcement (opens in a new tab)
American Humanist Association — National Day of Reason (opens in a new tab)
Organizer
National Day of Reason — official campaign (opens in a new tab)
Original Organizer
Washington Post — 2012 report describing a 2003 start by Washington-based humanists (opens in a new tab)
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 Day of Reason?
4 May The documented recurrence rule is: 4 May.
Does National Day of Reason fall on the same date every year?
Yes. It uses a fixed annual date unless stronger evidence changes the pattern.
Is National Day of Reason an official public holiday?
The reviewed sources verify it within this scope: United States / secular observance promoted by the American Humanist Association and partner organizations. 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 Day of Reason?
The reviewed sources identify American Humanist Association and Washington Area Secular Humanists as the proclaiming or establishing body. Current facilitation or coordination is recorded as American Humanist Association / National Day of Reason campaign.
Is National Day of Reason international or country-specific?
This observance is specific to United States. Its fuller verified scope is: United States / secular observance promoted by the American Humanist Association and partner organizations.
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 2026-09-09.
When is National Day of Reason?
The American Humanist Association currently presents it as an annual May 4 observance. Older AHA material used the first Thursday in May, so historical dates should be interpreted in that context.
Who created National Day of Reason?
American Humanist Association material identifies the American Humanist Association and the Washington Area Secular Humanists as the organizations that created the observance.
Is National Day of Reason a federal holiday?
No. Congressional resolutions and local or state proclamations have recognized the observance, but the reviewed sources do not establish it as a permanent federal public holiday.
When was National Day of Reason first observed?
The reviewed sources do not support one clean first-observance date strongly enough for this guide to assert it. Some historical materials point to a 2003 joint campaign launch, while later AHA publications contain inconsistent shorthand about the observance’s earlier history.
Other observances on May 4
These observances are also listed on May 4, 2027.
Firefighters’ Memorial Day
The Firefighters Memorial Trust says Firefighters’ Memorial Day is marked each year on 4 May to remember firefighters who have died in service.
Greenery Day (Midori no Hi)
Cabinet Office of Japan verifies Greenery Day as a national holiday, its 1989 creation on April 29 and the 2005 amendment moving it to May 4 from 2007.
International Respect for Chickens Day
United Poultry Concerns identifies International Respect for Chickens Day as an annual May 4 project and traces the campaign to its 2005 launch.
May 4 Day of Remembrance
Kent State University documents an official May 4 Day of Remembrance established in 1977 and a recurring remembrance tradition that includes a candlelight walk and vigil dating to 1971.
Remembrance Day
Nationaal Comité 4 en 5 mei documents the post-war origin of the National Remembrance tradition, the 1946 national framework, later government decisions, and the current 4 May observance wi…
Rhode Island Independence Day
Rhode Island government sources state that 4 May each year is established as Rhode Island Independence Day, commemorating the General Assembly’s 4 May 1776 Act renouncing allegiance to the…