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Evergreen date guide

What is celebrated on March 15?

For 2026, these source-backed observances resolve to Sunday, March 15. Recurring rules can move in another year, so each record keeps its own date logic.

Date authority profile

What this date contains

11 unique authority records

The list is deduplicated at the public entity layer while retaining all research provenance behind each page.

0 stable or rule-calculated

0 fixed annual and 0 reusable rule-based records can be placed without inventing a new date.

0 edition-specific

Edition-specific dates appear only when the requested year matches the verified edition; variable and historical records remain gated.

4 explicit country-scope records

Country scope stays attached to the underlying record instead of being generalized into a worldwide observance.

1 reviewed in-depth guides

These entities add reviewed meaning, history, activities, facts and FAQs without rewriting the authority facts.

Reviewed depth

Other in-depth guides on March 15

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Topics represented on March 15

All topics →
Civic, Remembrance & History 4Community, Causes & Advocacy 3Faith, Tradition & Spirituality 1Animals, Nature & Environment 1Workplace, Professions & Appreciation 1Arts, Entertainment & Lifestyle 1
11 date-resolved records

All observances on this date

Source-backedFixed Annual

Constitution Day of the Republic of Belarus

15 March annually · Belarus / national holiday

The official President of Belarus national-holidays register lists Constitution Day on 15 March, and the presidential constitution page states that the Constitution was adopted on 15 March…

Source-backedFixed Annual

Hungary’s national holidays

15 March, 20 August and 23 October; 20 August is the official state holiday · Hungary / constitutional national-holiday framework

Hungary’s Fundamental Law identifies 15 March, 20 August and 23 October as national holidays and states that 20 August is the official state holiday.

Source-backedFixed Annual

Hōnen Matsuri

15 March annually · Komaki, Aichi Shinto harvest/fertility festival

Japan National Tourism Organization documents Hōnen Matsuri in Komaki and states that it is held on 15 March.

Source-backedFixed Annual

International Day Against Police Brutality

15 March · International activist/civil-society observance originating in Montreal

The Collective Opposed to Police Brutality (COBP) documents March 15 as the International Day Against Police Brutality since 1997, with independent historical corroboration.

Source-backedFixed Annual

International Eat an Animal for PETA Day

15 March · Creator-originated informal satirical/protest observance associated with Meryl Yourish; not affiliated with PETA

Meryl Yourish’s own archive identifies March 15 as the official date and describes the 2005 observance as the third annual International Eat an Animal for PETA Day; her 2004 archive indepen…

Source-backedFixed Annual

Joseph Jenkins Roberts Memorial Birth Anniversary

15 March annually; observed Monday 16 March in 2026 · Liberia / national public holiday

Liberia’s 2026 presidential proclamation declares 15 March the memorial birth anniversary of first president Joseph Jenkins Roberts and states that the 2026 public-holiday observance moves…

Source-backedFixed Annual

World Consumer Rights Day

15 March · Organizer-backed global consumer-rights campaign

Consumers International

Source-backedFixed Annual

World Essential Workers Day

15 March · International-facing / Ray Washington-created essential-worker appreciation observance

National Day Archives records March 15 and identifies Ray Washington as the creator.

Source-backedFixed Annual

World Speech Day

15 March · global public-speaking and ideas-sharing observance

World Speech Day organization

How this date is built

This page is assembled from verified fixed dates, reusable recurrence rules, and target-year records whose edition matches 2026. Variable, historical or unresolved records are not silently forced onto this date.

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