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Evergreen date guide

What is celebrated on May 23?

For 2026, these source-backed observances resolve to Saturday, May 23. Recurring rules can move in another year, so each record keeps its own date logic.

Date authority profile

What this date contains

3 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.

0 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 May 23

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Topics represented on May 23

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Animals, Nature & Environment 2Health, Wellness & Awareness 1
3 date-resolved records

All observances on this date

Source-backedEdition Specific

World Fish Migration Day

23 May 2026; global culmination every two years · World Fish Migration Day organizers / global awareness event

The organizer states that World Fish Migration Day culminates every two years and identifies 23 May 2026 as the seventh edition.

Source-backedFixed Annual

World Turtle Day®

23 May annually; 23 May 2026 verified · International / American Tortoise Rescue campaign

The official World Turtle Day site states that American Tortoise Rescue founded the observance in 2000 and that World Turtle Day is held annually on May 23; its 2026 release marks the 26th…

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.

Read the methodology →