Source-backedRule Based Annual

Lake Superior Day

The U.S. National Park Service and EPA Lake Superior management materials describe Lake Superior Day as an annual event on the third Sunday in July.

Date / ruleThird Sunday in July (19 July in 2026)
ScopeLake Superior basin / binational U.S.–Canada environmental appreciation observance
VerificationGovernment Environmental Recurring Rule Verified
PortabilityRule Based Annual
Evidence statusSource-backed
Last authority check2026-09-09
Target-year policyCalculate Rule
Next date this engine can safely resolveSunday, July 18, 2027See everything on July 18 →
Authority summary

What is Lake Superior Day?

The U.S. National Park Service and EPA Lake Superior management materials describe Lake Superior Day as an annual event on the third Sunday in July.

Date and recurrence

Third Sunday in July (19 July in 2026)

This observance follows a reusable calendar rule rather than one fixed Gregorian date. The actual date can move from year to year. Rule: Third Sunday in July

Scope and status

The verified scope stored for this record is Lake Superior basin / binational U.S.–Canada environmental appreciation observance. The site preserves that boundary and does not infer broader government, global or public-holiday status from the observance name alone.

Classification

Topic and context

Animals, Nature & Environment →
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.
Provenance

Sources

Source policy →
  1. U.S. National Park Service — Lake Superior DayNational Government
  2. U.S. EPA — Lake Superior Lakewide Management Plan 2008National Government
Reader questions

Frequently asked questions

When is Lake Superior Day?

Third Sunday in July (19 July in 2026) The stored recurrence guidance is: Third Sunday in July.

Does Lake Superior Day fall on the same date every year?

It follows a recurring calendar rule, so the Gregorian date can change from year to year.

Is Lake Superior Day an official public holiday?

The authority record verifies it within this scope: Lake Superior basin / binational U.S.–Canada environmental appreciation observance. 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 Lake Superior Day?

The stored designation basis is: The U.S. National Park Service and EPA Lake Superior management materials describe Lake Superior Day as an annual event on the third Sunday in July.. Supporting provenance includes U.S. National Park Service — Lake Superior Day. The site does not infer a separate creator or founder unless reviewed evidence establishes one.

Is Lake Superior Day international or country-specific?

No single country is assigned to this record in the authority dataset. The source-defined scope is: Lake Superior basin / binational U.S.–Canada environmental appreciation observance. 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 2026-09-09.

Same date

Other observances on July 18

Date guide →

These records also resolve to July 18, 2027 under the current authority data.

Source-backedFixed Annual

Insurance Nerd Day

Insurance industry / informal professional appreciation observance

Pioneer State Mutual’s own Insurance Nerd Day article says people in the industry talk about the observance every year on July 18 and describes its purpose as showcasing insurance careers.

Source-backedFixed Annual

Jura de la Constitución

Uruguay / national holiday context

Uruguay government sources identify 18 July with the Jura de la Constitución, while the Ministry of Labour includes 18 July in the national holiday calendar.

Source-backedRule Based Annual

National Ice Cream Day

United States / modern recurring convention rooted in the 1984 federal designation

The U.S. Census Bureau currently describes National Ice Cream Day as the third Sunday in July and traces it to President Reagan’s 1984 proclamation. The Reagan Library text shows that the o…

Source-backedFixed Annual

National Sour Candy Day

United States / American Licorice Company and Sour Punch-created candy observance

American Licorice/Sour Punch materials celebrate National Sour Candy Day on July 18, and National Day Calendar identifies American Licorice Company as the 2015 founder.

Source-backedFixed Annual

World Listening Day

World Listening Project / global listening and acoustic-ecology campaign

The World Listening Project states that each year communities program World Listening Day activities on 18 July, the birthdate of R. Murray Schafer.

Explore further

Related observances with useful context

More in this topic →

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.”