National Idaho Day
National Day Calendar lists National Idaho Day on 17 May. The U.S. Senate records Idaho’s admission/statehood date as 3 July 1890. The two dates are deliberately kept separate so the informal calendar observance is not misrepresented as the official statehood anniversary.
Date and recurrence
17 May
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 / National Day Calendar National State Days series — Idaho. The site preserves that boundary and does not infer broader government, global or public-holiday status from the observance name alone.
Also known as
National Idaho Day
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.
- Remembrance Civic Context Care.
Sources
- National Day Calendar — National Idaho DayCreator Observance Registry
- U.S. Senate — Idaho state historyFederal Legislative History
Frequently asked questions
When is National Idaho Day?
17 May The stored recurrence guidance is: 17 May under the National Day Calendar National State Days series..
Does National Idaho 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 National Idaho Day an official public holiday?
The authority record verifies it within this scope: United States / National Day Calendar National State Days series — Idaho. 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 National Idaho Day?
The stored designation basis is: National Day Calendar lists National Idaho Day on 17 May. The U.S. Senate records Idaho’s admission/statehood date as 3 July 1890. The two dates are deliberately kept separate so the informal calendar observance is not misrepresented as the official statehood anniversary.. Supporting provenance includes National Day Calendar — National Idaho Day. The site does not infer a separate creator or founder unless reviewed evidence establishes one.
Is National Idaho Day international or country-specific?
This authority record is country-scoped to United States. Its fuller verified scope is: United States / National Day Calendar National State Days series — Idaho.
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 2026-09-10.
Other observances on May 17
These records also resolve to May 17, 2027 under the current authority data.
International Child Helpline Day
Child Helpline International identifies 17 May as International Child Helpline Day; its materials also document the observance’s network context.
International Day against Homophobia, Transphobia and Biphobia (IDAHOBIT)
The IDAHOBIT campaign’s 2026 material identifies May 17 as the International Day against Homophobia, Transphobia and Biphobia and describes global participation around the date.
Supply Chain Professionals Day
CSCMP announced the inaugural annual Supply Chain Professionals Day in 2018, and trade coverage records the recurring rule as the third Monday in May.
World Hypertension Day
World Hypertension League (WHL)
World NF Awareness Day
The Children’s Tumor Foundation identifies 17 May as World NF Awareness Day and separately identifies 22 May for NF2-SWN awareness.
World Telecommunication and Information Society Day
A/RES/60/252