National Wyoming Day2026 · Date · History
National Day Calendar lists the private National Wyoming Day on May 24; U.S. Senate records statehood on July 10, 1890. Wyoming Statutes §8-4-103 separately establishes December 10 as “Wyoming Day,” and state sources document current government-to-government work with the Eastern Shoshone and Northern Arapaho Tribes.
About National Wyoming Day
National Wyoming Day is a private observance in National Day Calendar’s National State Days series, observed on May 24.
It is separate from the statehood/admission anniversary of July 10, 1890 and should not be presented as a government-created holiday unless a separate official instrument is specifically cited.
Why National Wyoming Day matters
In interpreting National Wyoming Day, the day can be used to explore the state’s communities, places, cultures and history while keeping the private calendar identity clear.
Wyoming state sources describe government-to-government work with the Eastern Shoshone Tribe and Northern Arapaho Tribe, the two sovereign Tribal governments associated with the Wind River Reservation.
History of National Wyoming Day
National Day Calendar lists National Wyoming Day on May 24 and documents the National State Days series as a private calendar project that began rolling out in 2017.
Federal historical sources record the statehood/admission date as July 10, 1890.
For National Wyoming Day, the private National Day Calendar date and the statehood/admission anniversary are separate identities and should not be merged.
Wyoming law separately designates December 10 of each year as “Wyoming Day” and requires the governor to issue a proclamation requesting its observance.
The statutory December 10 Wyoming Day commemorates the territorial suffrage law; it is a distinct legal identity from the private May 24 National Wyoming Day and from July 10 statehood.
How the observance developed
This timeline uses documented milestones from reviewed sources. Missing stages are left out rather than guessed.
National Day Calendar
National Day Calendar documents the National State Days series as its private observance project.
National Day Calendar
The private National Wyoming Day identity is creator-defined; state government is not asserted as the original establishing body.
National Day Calendar
National Day Calendar continues to publish National Wyoming Day on May 24.
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
Also known as
National Wyoming Day
How to Observe National Wyoming Day
When learning about National Wyoming Day, explore state and local history through Tribal, government, museum, library and archive sources.
When learning about National Wyoming Day, include Indigenous histories and living Tribal/Native governments rather than beginning the story at U.S. statehood.
When learning about National Wyoming Day, describe the private calendar observance accurately and keep statehood or official legal observances under their own names and dates.
When learning about National Wyoming Day, use source-bounded language for contested or painful historical events and avoid stereotypes.
National Wyoming Day Facts
National Day Calendar places National Wyoming Day on May 24.
National Wyoming Day appears in the National Day Calendar state-day series, which the publisher says began in 2017.
The statehood/admission date is July 10, 1890.
For National Wyoming Day, Wyoming state sources describe government-to-government work with the Eastern Shoshone Tribe and Northern Arapaho Tribe, the two sovereign Tribal governments associated with the Wind River Reservation.
Wyoming Statutes §8-4-103 separately designates December 10 as Wyoming 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.
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. Senate — Wyoming state history
Wyoming Department of Family Services — Tribal Relations
Wyoming Legislature — W.S. §8-4-103 Wyoming Day
National Day Calendar — National Wyoming Day (opens in a new tab)
Creator Observance Registry
U.S. Senate — Wyoming state history (opens in a new tab)
Federal Legislative History
Wyoming Department of Family Services — Tribal Relations (opens in a new tab)
State Government Tribal Context
Wyoming Legislature — W.S. §8-4-103 Wyoming Day (opens in a new tab)
State Statute
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 Wyoming Day?
24 May The documented recurrence rule is: 24 May under the National Day Calendar National State Days series..
Does National Wyoming Day fall on the same date every year?
Yes. It uses a fixed annual date unless stronger evidence changes the pattern.
Is National Wyoming Day an official public holiday?
The reviewed sources verify it within this scope: United States / National Day Calendar National State Days series — Wyoming. 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 Wyoming Day?
The reviewed sources identify National Day Calendar as the proclaiming or establishing body. Current facilitation or coordination is recorded as National Day Calendar.
Is National Wyoming Day international or country-specific?
This observance is specific to United States. Its fuller verified scope is: United States / National Day Calendar National State Days series — Wyoming.
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 2026-09-26.
When is National Wyoming Day?
National Day Calendar places the private observance on May 24.
Is that the statehood anniversary?
No. The statehood/admission date is July 10, 1890.
Is National Wyoming Day a government-created holiday?
The reviewed origin evidence supports a private National Day Calendar observance. Any later government recognition or similarly named legal observance must be treated separately.
How should Indigenous history be handled?
Use current Tribal/government sources and describe living sovereign or recognized communities as present-day governments and peoples, not only as historical background.
Does Wyoming law have a separate Wyoming Day?
Yes. Wyoming Statutes §8-4-103 designates December 10 each year as Wyoming Day. That legal observance is separate from the private May 24 National Wyoming Day.
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