Pathologists’ Assistants Day2026 · Date · History
The American Association of Pathologists’ Assistants identifies April 14 as PA Day/Pathologists’ Assistants Day and has repeatedly promoted the annual professional recognition.
About Pathologists’ Assistants Day
Pathologists’ Assistants Day, also called PA Day, is observed on April 14 to recognize pathologists’ assistants and the profession’s role in patient care.
The American Association of Pathologists’ Assistants (AAPA) organizes the observance and ties the date to the association’s April 14, 1972 incorporation.
Why Pathologists’ Assistants Day matters
The day highlights the specialized work pathologists’ assistants perform in pathology practice and the professional standards surrounding the field.
AAPA uses PA Day for professional recognition, advocacy and public understanding of the role.
History of Pathologists’ Assistants Day
AAPA was founded and incorporated on April 14, 1972 when its founding leaders filed the Articles of Incorporation.
AAPA’s official historical timeline states that the first PA Day was celebrated on April 14, 2014.
AAPA continues to celebrate PA Day every April 14 and publishes participation and advocacy materials for members.
In 2026, AAPA reported that the City of Gillette, Wyoming had officially recognized April 14 as National Pathologists’ Assistant Day.
How the observance developed
This timeline uses documented milestones from reviewed sources. Missing stages are left out rather than guessed.
American Association of Pathologists’ Assistants (AAPA)
AAPA’s official historical timeline identifies the first PA Day within the association’s own institutional history.
American Association of Pathologists’ Assistants (AAPA)
AAPA establishment of PA Day documented in its historical timeline
First documented observance
AAPA’s official historical timeline explicitly states that the first PA Day was celebrated on April 14, 2014.
The city officially recognized April 14 as National Pathologists’ Assistant Day.
City of Gillette, Wyoming · National Pathologists’ Assistant Day proclamation
American Association of Pathologists’ Assistants (AAPA)
AAPA maintains the current PA Day page, materials and annual participation guidance.
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.
2 fields not established in reviewed sources
Later institutional actions
Later recognition, renaming, mergers or date changes are kept separate from original establishment.
Also known as
PA Day, National Pathologists’ Assistants Day
How to Observe Pathologists’ Assistants Day
Thank a pathologists’ assistant or pathology team for their professional contribution.
Use AAPA educational material to learn what certified pathologists’ assistants do.
Share accurate information about the profession with students or colleagues interested in pathology careers.
If you are part of a workplace or professional group, use established recognition materials rather than inventing clinical claims.
Pathologists’ Assistants Day Facts
PA Day is observed every April 14.
The first PA Day was celebrated in 2014.
April 14 marks the anniversary of AAPA’s incorporation on April 14, 1972.
AAPA remains the professional association facilitating the annual observance.
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.
AAPA Historical Timeline (opens in a new tab)
AAPA PA Day (opens in a new tab)
AAPA — Annual PA Day reference (opens in a new tab)
Professional Association
AAPA — PA Day April 14 (opens in a new tab)
Professional Association
AAPA 2026 proclamation news (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 Pathologists’ Assistants Day?
14 April The documented recurrence rule is: 14 April.
Does Pathologists’ Assistants Day fall on the same date every year?
Yes. It uses a fixed annual date unless stronger evidence changes the pattern.
Is Pathologists’ Assistants Day an official public holiday?
The reviewed sources verify it within this scope: International / American Association of Pathologists’ Assistants professional recognition. 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 Pathologists’ Assistants Day?
The reviewed sources identify American Association of Pathologists’ Assistants (AAPA) as the proclaiming or establishing body. Current facilitation or coordination is recorded as American Association of Pathologists’ Assistants (AAPA).
Is Pathologists’ Assistants Day international or country-specific?
The documented scope is international or global: International / American Association of Pathologists’ Assistants professional recognition. That does not mean every country treats the date as a public holiday or observes it in the same way.
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 Pathologists’ Assistants Day?
It is observed every April 14.
When was the first PA Day?
AAPA’s historical timeline says the first PA Day was celebrated on April 14, 2014.
Why is it on April 14?
AAPA says the date honors the association’s establishment on April 14, 1972, when its founding leaders filed the Articles of Incorporation.
Who facilitates PA Day?
The American Association of Pathologists’ Assistants (AAPA) maintains the PA Day program and participation resources.
Other observances on April 14
These observances are also listed on April 14, 2027.
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International Day of Pink
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National Gardening Day
USDA’s National Institute of Food and Agriculture lists April 14 as National Gardening Day in its 2026 social-media toolkit.
Pan American Day
Organization of American States
U.S. Air Force Reserve Birthday
Air Force Reserve Command materials mark 14 April 2026 as the Air Force Reserve’s 78th anniversary.
World Chagas Disease Day
WHO observance