Source-backedFixed AnnualHeightened editorial care

Thomas Jefferson's birthday

36 U.S.C. §141 requires an annual proclamation inviting observance of April 13 in commemoration of Thomas Jefferson's birthday.

Date / rule13 April annually
ScopeUnited States / federal birthday commemoration
VerificationFederal Statute Verified
PortabilityFixed Annual
Evidence statusSource-backed
Last authority check2026-09-08
Target-year policyReuse Fixed
Next date this engine can safely resolveTuesday, April 13, 2027See everything on April 13 →
Authority summary

What is Thomas Jefferson's birthday?

36 U.S.C. §141 requires an annual proclamation inviting observance of April 13 in commemoration of Thomas Jefferson's birthday.

Date and recurrence

13 April annually

This authority record treats the observance as a fixed annual date. The same month and day can be reused unless a stronger source changes the rule.

Scope and status

The verified scope stored for this record is United States / federal birthday commemoration. The site preserves that boundary and does not infer broader government, global or public-holiday status from the observance name alone.

Also known as

Thomas Jefferson Day

Classification

Topic and context

Civic, Remembrance & History →
Accuracy controls

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.
  • Remembrance Civic Context Care.
Provenance

Sources

Source policy →
  1. U.S. Code — 36 USC §141, Thomas Jefferson's birthdayFederal Statute
Reader questions

Frequently asked questions

When is Thomas Jefferson's birthday?

13 April annually The stored recurrence guidance is: 13 April.

Does Thomas Jefferson's birthday fall on the same date every year?

The authority record classifies it as fixed annual, so its month and day are reusable unless stronger evidence changes the rule.

Is Thomas Jefferson's birthday an official public holiday?

The authority record verifies it within this scope: United States / federal birthday commemoration. That recognition does not by itself make it a statutory public holiday; the site only makes public-holiday claims when the supporting authority record explicitly does so.

Who established or recognizes Thomas Jefferson's birthday?

The stored designation basis is: 36 U.S.C. §141 requires an annual proclamation inviting observance of April 13 in commemoration of Thomas Jefferson's birthday.. Supporting provenance includes U.S. Code — 36 USC §141, Thomas Jefferson's birthday. The site does not infer a separate creator or founder unless reviewed evidence establishes one.

Is Thomas Jefferson's birthday international or country-specific?

This authority record is country-scoped to United States. Its fuller verified scope is: United States / federal birthday commemoration.

How is this page verified?

The factual layer is source-backed and keeps its date rule, scope, provenance and editorial guardrails attached to the authority record. This record was checked on 2026-09-08.

Same date

Other observances on April 13

Date guide →

These records also resolve to April 13, 2027 under the current authority data.

Source-backedRule Based Annual

International Be Kind To Lawyers Day

International / creator-led legal-profession observance

The National Association of College and University Attorneys identifies Steve Hughes as the creator and states that the day is celebrated annually on the second Tuesday in April.

Source-backedFixed Annual

International FND Awareness Day

FND Hope International / awareness campaign

FND Hope’s advisory-board material states that it supports the annual International FND Awareness Day on April 13, with older first-party campaign material documenting the same date.

Source-backedFixed Annual

International Plant Appreciation Day

International / informal plant-appreciation observance

Antigua and Barbuda’s Ministry of Agriculture states that International Plant Appreciation Day is observed every year on April 13, and National Today independently lists the same annual dat…

Source-backedFixed Annual

National Borinqueneers Day

United States recognition of the 65th Infantry Regiment / Borinqueneers

U.S. Senate Resolution 641 (2020) and subsequent federal recognition

Source-backedFixed Annual

National Make Lunch Count Day

United States / TGI Fridays-created lunch-break campaign observance

National Day Calendar and launch-era material attribute the 2016 observance to TGI Fridays and place it on April 13.

Source-backedFixed Annual

National Silly Earring Day

Creator-led lifestyle observance / TheTravelBugBite and Oddity Cart

The creator’s own 2021 announcement states that National Silly Earring Day was founded as an annual observance on April 13.

Explore further

Related observances with useful context

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Related records are selected from shared ontology signals. When a reviewed distinction exists, it is labeled separately so “related” is not mistaken for “the same observance.”