Evergreen date guide

What is celebrated on May 27?

For 2026, these source-backed observances resolve to Wednesday, May 27. Recurring rules can move in another year, so each record keeps its own date logic.

Date authority profile

What this date contains

6 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.

3 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 27

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Civic, Remembrance & History 2 Faith, Tradition & Spirituality 1 Workplace, Professions & Appreciation 1 Animals, Nature & Environment 1 Health, Wellness & Awareness 1

6 date-resolved records

All observances on this date

Source-backedFixed Annual

Commemoration of the abolition of slavery — Guadeloupe

27 May annually · Guadeloupe / statutory abolition commemoration and public holiday

French Labour Code article L3422-2 designates 27 May in Guadeloupe as a public holiday for the commemoration of the abolition of slavery.

Source-backedFixed Annual

Commemoration of the abolition of slavery — Saint-Martin

27 May annually under current French Labour Code · Saint-Martin / statutory abolition commemoration and public holiday

French Labour Code article L3422-2 currently designates 27 May in Saint-Martin as a public holiday for the commemoration of the abolition of slavery.

Source-backedEdition Specific

Eid al-Adha (Hari Raya Haji in Singapore)

27 May 2026 in Singapore; subject to further confirmation on the current MOM calendar · Singapore public-holiday calendar / globally variable Islamic observance

Singapore’s Ministry of Manpower lists Hari Raya Haji on 27 May 2026 and marks the date subject to further confirmation. This verifies the Singapore 2026 public-holiday mapping, not a unive…

Source-backedFixed Annual

Emergency Medicine Day

27 May · Organizer-backed international observance

European Society for Emergency Medicine (EUSEM) and participating emergency-medicine organizations

Source-backedRule Based Annual

IOSF World Otter Day

Last Wednesday in May annually · International / International Otter Survival Fund campaign

The International Otter Survival Fund states that it established IOSF World Otter Day and that it takes place on the last Wednesday in May each year.

Source-backedFixed Annual

National Hairstylist Mental Health Awareness Day

27 May · United States / Booksy-created hairstylist mental-health awareness observance

Beauty-industry material published on May 27 states that Booksy designated May 27 as National Hairstylist Mental Health Awareness Day; current observance listings attribute the 2021 creatio…

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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