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Evergreen date guide

What is celebrated on October 31?

For 2026, these source-backed observances resolve to Saturday, October 31. Recurring rules can move in another year, so each record keeps its own date logic.

Date authority profile

What this date contains

8 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.

2 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.

Curated global anchors

Major global guides on October 31

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A reviewed starting point drawn from prominent global observances with strong institutional or organizer provenance. Selection does not change each record’s official status or scope.

Source-backedFixed AnnualIn-depth guide

World Cities Day

31 October · United Nations / international observance

A/RES/68/239

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Topics represented on October 31

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Civic, Remembrance & History 4Animals, Nature & Environment 1Arts, Entertainment & Lifestyle 1Faith, Tradition & Spirituality 1Celebrations & Social 1
8 date-resolved records

All observances on this date

Source-backedRule Based Annual

Hug a Sheep Day

Last Saturday in October · Creator-led sheep appreciation observance

The creator’s Hug a Sheep Day page explains that the observance began on 30 October and is now held on the last Saturday of October.

Source-backedFixed Annual

National Knock Knock Joke Day

31 October · United States / informal humor observance

Independent observance calendars identify October 31 as the annual date of National Knock Knock Joke Day.

Source-backedFixed Annual

Rashtriya Ekta Diwas (National Unity Day)

31 October every year · India / national unity observance

India’s Press Information Bureau states that Rashtriya Ekta Diwas is celebrated every year on 31 October to commemorate Sardar Vallabhbhai Patel’s birth anniversary and reaffirm unity, inte…

Source-backedFixed Annual

Reformation Day

31 October annually in the cited Lutheran calendar · Lutheran / Protestant Christian commemoration

The Lutheran Church—Missouri Synod calendar identifies 31 October as Reformation Day and provides the recurring observance in its church calendar.

Source-backedFixed AnnualIn-depth guide

World Cities Day

31 October · United Nations / international observance

A/RES/68/239

Source-backedFixed Annual

World Savings Day

31 October annually · Global / World Savings and Retail Banking Institute tradition

WSBI states that World Savings Day continues to be observed every 31 October.

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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