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Evergreen date guide

What is celebrated on March 15?

See the observances and verified observance-history milestones attached to March 15. Each observance keeps its own source and date details.

Verified history

On this date in observance history

Today in history →

Selected observance milestones connected to this date, based on reviewed sources.

2024
Later action

International Day to Combat Islamophobia

Adopted additional measures to combat Islamophobia, including further institutional follow-up, without replacing the 2022 resolution that established the annual Day.

2022
Later action

Independence Day of Ukraine

During martial law, the normal Labour Code Article 73 holiday rules are not applied; this changes operational work/rest treatment without changing the August 24 anniversary.

1997
First observance

International Day Against Police Brutality

COBP says it has organized the annual Montreal demonstration since March 15, 1997, and a 2007 movement publication calls 1997 the first International Day Against Police Brutality.

About this date

What this date contains

8 observances

Each observance is shown once in this view, with its own source and scope details available on the guide page.

0 repeat predictably

0 use a fixed annual date and 0 follow a reusable calendar rule.

0 are edition-specific

These dates are shown only for the year or edition that has been confirmed.

4 have a country-specific scope

Country-specific observances are not presented as worldwide events.

8 have in-depth guides

These pages include reviewed meaning, history, activities, facts and FAQs.

Reviewed depth

Other in-depth guides on March 15

Source-backedFixed AnnualIn-depth guide

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 AnnualIn-depth guide

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 Article J identifies 15 March, 20 August and 23 October as national holidays and identifies 20 August as the official state holiday; the Labour Code separately lis…

Source-backedFixed AnnualIn-depth guide

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 AnnualIn-depth guide

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 original 1 March 2003 archive designates March 15 as International Eat an Animal for PETA Day; the 2004 archive calls the next occurrence second annual and later creator pos…

Explore the mix

Topics represented on March 15

All topics →
Civic, Remembrance & History 4Community, Causes & Advocacy 2Animals, Nature & Environment 1Arts, Entertainment & Lifestyle 1
8 observances

All observances on this date

Source-backedFixed AnnualIn-depth guide

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 AnnualIn-depth guide

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 Article J identifies 15 March, 20 August and 23 October as national holidays and identifies 20 August as the official state holiday; the Labour Code separately lis…

Source-backedFixed AnnualIn-depth guide

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 AnnualIn-depth guide

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 original 1 March 2003 archive designates March 15 as International Eat an Animal for PETA Day; the 2004 archive calls the next occurrence second annual and later creator pos…

Source-backedFixed AnnualIn-depth guide

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 AnnualIn-depth guide

World Speech Day

15 March · global public-speaking and ideas-sharing observance coordinated by the World Speech Day not-for-profit organization

World Speech Day first-party material verifies Simon Gibson’s 2015 launch at the Athens Democracy Forum, annual March 15 recurrence and continuing organizer stewardship across a decentraliz…

How dates are selected

This page combines fixed annual dates, reusable calendar rules and year-specific dates confirmed for 2026. Variable or historical dates are included only when they are clearly supported.

Read the methodology →