Source-backedFixed AnnualHeightened editorial care

National Maine Day

National Day Calendar lists National Maine Day on 21 December. The U.S. Senate records Maine’s admission/statehood date as 15 March 1820. The two dates are deliberately kept separate so the informal calendar observance is not misrepresented as the official statehood anniversary.

Date / rule21 December
ScopeUnited States / National Day Calendar National State Days series — Maine
VerificationCreator Registry Plus Federal History Verified
PortabilityFixed Annual
Evidence statusSource-backed
Last authority check2026-09-10
Target-year policyReuse Fixed
Next date this engine can safely resolveMonday, December 21, 2026See everything on December 21 →
Authority summary

What is National Maine Day?

National Day Calendar lists National Maine Day on 21 December. The U.S. Senate records Maine’s admission/statehood date as 15 March 1820. The two dates are deliberately kept separate so the informal calendar observance is not misrepresented as the official statehood anniversary.

Date and recurrence

21 December

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 — Maine. 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 Maine 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. National Day Calendar — National Maine DayCreator Observance Registry
  2. U.S. Senate — Maine state historyFederal Legislative History
Reader questions

Frequently asked questions

When is National Maine Day?

21 December The stored recurrence guidance is: 21 December under the National Day Calendar National State Days series..

Does National Maine 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 Maine Day an official public holiday?

The authority record verifies it within this scope: United States / National Day Calendar National State Days series — Maine. 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 Maine Day?

The stored designation basis is: National Day Calendar lists National Maine Day on 21 December. The U.S. Senate records Maine’s admission/statehood date as 15 March 1820. 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 Maine Day. The site does not infer a separate creator or founder unless reviewed evidence establishes one.

Is National Maine 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 — Maine.

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.

Same date

Other observances on December 21

Date guide →

These records also resolve to December 21, 2026 under the current authority data.

Source-backedFixed Annual

Chester Greenwood Day

Maine statutory commemorative day honoring inventor Chester Greenwood; “Earmuff” in the canonical page title is descriptive rather than the statutory title

Maine law designates 21 December as Chester Greenwood Day in honor of the Farmington inventor associated with ear protectors/earmuffs.

Source-backedEdition Specific

December solstice

Global astronomical event / USNO 2026 season table

The U.S. Naval Observatory gives the December 2026 solstice at 20:50 UT on 21 December.

Source-backedFixed Annual

National Coquito Day

Puerto Rican cultural/culinary context / Don Q-created informal seasonal observance

Don Q Rum announced National Coquito Day as an annual December 21 observance and described the 2018 formalization of the day.

Source-backedFixed Annual

National Crossword Puzzle Day

United States / crossword-puzzle appreciation observance

The U.S. Census Bureau’s current December education calendar lists National Crossword Puzzle Day on December 21; the U.S. House Historian has also acknowledged the December observance.

Source-backedFixed AnnualIn-depth guide

World Basketball Day

United Nations / international observance

A/RES/77/324

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