Evergreen date guide

What is celebrated on May 1?

For 2026, these source-backed observances resolve to Friday, May 1. Recurring rules can move in another year, so each record keeps its own date logic.

Date authority profile

What this date contains

25 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.

10 explicit country-scope records

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

0 reviewed in-depth guides

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

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Topics represented on May 1

All topics →

Animals, Nature & Environment 5 Faith, Tradition & Spirituality 3 Civic, Remembrance & History 3 Celebrations & Social 3 Workplace, Professions & Appreciation 3 Food, Drink & Hospitality 3 Relationships & Family 2 Health, Wellness & Awareness 2

25 date-resolved records

All observances on this date

Source-backedEdition Specific

Buddha Purnima

1 May 2026 · India / Government of India 2026 gazetted-holiday calendar

The Government of India holiday calendar published by IIRS/ISRO lists Buddha Purnima as a gazetted holiday on 1 May 2026.

Source-backedFixed Annual

Calan Mai

1 May traditionally · Welsh seasonal folk tradition associated with the traditional beginning of summer

Wales.com, the official Welsh destination site, identifies Calan Mai on 1 May and describes its traditional seasonal customs.

Source-backedFixed Annual

Constitution Day

1 May annually · Republic of the Marshall Islands / national Constitution Day

The Republic of the Marshall Islands Embassy country profile lists Constitution Day on May 1 among the country’s national holidays and notes adoption of the Constitution on May 1, 1979.

Source-backedEdition Specific

Fête du travail et de l’Agriculture (Agriculture and Labor Day)

1 May 2026 · Haiti / national holiday (2026 official calendar)

The Embassy of Haiti in Washington lists Fête du travail et de l’Agriculture on 1 May 2026 and identifies Agriculture and Labor Day as a national holiday for that edition.

Source-backedFixed Annual

Global Love Day

1 May · organizer-led global compassion and human-connection observance

The Love Foundation; first celebrated in 2004

Source-backedFixed Annual

International Doodle Dog Day

1 May · International / creator-led doodle-dog community observance

The official International Doodle Dog Day site states that doodle dog lovers celebrate every year on May 1 and identifies Jeannie North as the founder.

Source-backedEdition Specific

International Sauvignon Blanc Day

1 May in the 2026 edition · International wine-industry cultural observance

New Zealand Winegrowers’ current 2026 material identifies 1 May 2026 as International Sauvignon Blanc Day.

Source-backedFixed Annual

International Sunflower Guerrilla Gardening Day

1 May · International / guerrilla-gardening community observance

GuerrillaGardening.org documents International Sunflower Guerrilla Gardening Day on 1 May and says Brussels guerrilla gardeners declared it in 2007.

Source-backedFixed Annual

Keep Kids Alive Drive 25 Day

1 May · United States / Keep Kids Alive Drive 25 road-safety campaign

Keep Kids Alive Drive 25 identifies May 1 as KKAD25 Day and describes the 2026 observance as its 20th annual nationwide proclamation effort.

Source-backedEdition Specific

Kentucky Oaks

Friday 1 May in 2026 · Churchill Downs thoroughbred horse race for three-year-old fillies

Churchill Downs lists the 152nd Kentucky Oaks for Friday 1 May 2026 and identifies its racing scope.

Source-backedFixed Annual

Labor Day (Philippines)

1 May · Philippine regular holiday

Supreme Court E-Library / official presidential proclamation

Source-backedFixed Annual

Law Day, U.S.A.

1 May · United States patriotic and national observance

United States Code, title 36 §113

Source-backedFixed Annual

Lei Day

1 May · Hawaiʻi cultural observance recognized by the state

State of Hawaiʻi Department of Land and Natural Resources / state law history

Source-backedFixed Annual

Loyalty Day

1 May · United States patriotic and national observance

United States Code, title 36 §115

Source-backedFixed Annual

May Day / International Workers’ Day

1 May · International labour movement observance; public-holiday status varies by country

The International Labour Organization marks May Day on 1 May and publishes current worker-focused material.

Source-backedFixed Annual

National Black Barber Shop Appreciation Day

1 May · United States / creator-registered appreciation observance

National Day Archives records National Black Barber Shop Appreciation Day for May 1 and attributes its 2021 creation to James Jean-Pierre.

Source-backedFixed Annual

National Chocolate Parfait Day

1 May · Informal food-calendar usage documented by Association of Nutrition & Foodservice Professionals chapter material

Two Association of Nutrition & Foodservice Professionals chapter calendars list National Chocolate Parfait Day on 1 May.

Source-backedFixed Annual

National Mother Goose Day

1 May · United States-origin literary and nursery-rhyme observance

A New York State Senate resolution identifies Gloria T. Delamar as establishing Mother Goose Day in 1987 alongside publication of her Mother Goose reference work; calendar documentation con…

Source-backedRule Based Annual

National No Pants Day

First Friday in May · United States / informal novelty observance

National Today and Days Of The Year independently define No Pants Day as the first Friday in May each year.

Source-backedFixed Annual

National Purebred Dog Day

1 May · United States / dog-community recognition

The American Kennel Club identifies 1 May as National Purebred Dog Day and its May 2026 Gazette explicitly celebrates the date.

Source-backedFixed Annual

National Rotate Your Beer Day

1 May · United States / informal beer-retail observance

National Day Archives records National Rotate Your Beer Day on May 1 and attributes it to Superior Beverage Group, while Days Of The Year independently places it on May 1.

Source-backedFixed Annual

Save the Rhino Day

1 May · International Rhino Foundation / conservation-awareness context

The International Rhino Foundation identifies May 1 as Save the Rhino Day in its conservation communications.

Source-backedEdition Specific

School Lunch Hero Day

1 May 2026 · United States / School Nutrition Association campaign

The School Nutrition Association’s official page lists School Lunch Hero Day on 1 May 2026 and frames it as recognition for school nutrition professionals.

Source-backedFixed Annual

School Principals Day

1 May · United States / school-principal recognition observance corroborated by California education calendar

The California Department of Education’s 2026 and 2027 recognition calendars both state that May 1 should be recognized annually as School Principals Day.

Source-backedFixed Annual

Therapeutic Massage Awareness Day

1 May · International / informal therapeutic-massage awareness observance

National Today and Days Of The Year independently place Therapeutic Massage Awareness Day on May 1 each year.

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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