Pi Day
The U.S. House of Representatives agreed to a resolution supporting the designation of Pi Day and encouraging schools and educators to observe it with mathematics activities
Date and recurrence
14 March each year
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 Mathematics education and public engagement / United States congressional recognition context. The site preserves that boundary and does not infer broader government, global or public-holiday status from the observance name alone.
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.
Sources
- GovInfo — H.Res. 224 supporting Pi DayCongressional Support Resolution
Frequently asked questions
When is Pi Day?
14 March each year The stored recurrence guidance is: 14 March.
Does Pi Day 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 Pi Day an official public holiday?
The authority record verifies it within this scope: Mathematics education and public engagement / United States congressional recognition context. 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 Pi Day?
The stored designation basis is: The U.S. House of Representatives agreed to a resolution supporting the designation of Pi Day and encouraging schools and educators to observe it with mathematics activities. Supporting provenance includes GovInfo — H.Res. 224 supporting Pi Day. The site does not infer a separate creator or founder unless reviewed evidence establishes one.
Is Pi Day international or country-specific?
No single country is assigned to this record in the authority dataset. The source-defined scope is: Mathematics education and public engagement / United States congressional recognition context. Use that scope rather than assuming worldwide or country-specific status.
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 2026-09-07.
Other observances on March 14
These records also resolve to March 14, 2027 under the current authority data.
Constitution Day
The Government of Andorra’s official embassy holiday calendar lists 14 March as Constitution Day.
Dog Theft Awareness Day
The Stolen And Missing Pets Alliance states that its annual Dog Theft Awareness Day is on 14 March and documents the campaign’s continuing UK advocacy work.
International Day of Action for Rivers
International Rivers and the 1997 International Meeting of People Affected by Dams
International Day of Mathematics
National Children's Craft Day
National Day Calendar and National Today independently place National Children's Craft Day on March 14 each year.
National Learn About Butterflies Day
Butterfly Pavilion identifies March 14 as Learn About Butterflies Day, and institutional event calendars corroborate the date.