Evergreen date guide

What is celebrated on December 29?

For 2026, these source-backed observances resolve to Tuesday, December 29. Recurring rules can move in another year, so each record keeps its own date logic.

Date authority profile

What this date contains

4 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.

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 December 29

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Civic, Remembrance & History 2 Celebrations & Social 1 Arts, Entertainment & Lifestyle 1

4 date-resolved records

All observances on this date

Source-backedFixed Annual

Constitution of Ireland (Bunreacht na hÉireann)

29 December marks the Constitution’s 1937 commencement · Ireland / constitutional history

The official constitutional text states that Bunreacht na hÉireann was enacted by the people on 1 July 1937 and came into operation on 29 December 1937.

Source-backedEdition Specific

Edinburgh’s Hogmanay

29 December 2026–1 January 2027 for the Edinburgh festival edition · Scottish New Year tradition; event programming varies by place and year

Official Edinburgh festival sources publish the 2026–27 Hogmanay program window and describe Hogmanay as Scotland’s New Year celebration.

Source-backedFixed Annual

Independence Day of Mongolia

29 December annually · Mongolia / statutory public holiday

Mongolia’s official Legal Information System lists 29 December as Independence Day of Mongolia in Labour Law Article 76 on public holidays.

Source-backedFixed Annual

International Cello Day

29 December annually · International music-appreciation observance

Akashvani News, India’s public broadcaster, identifies International Cello Day as an annual 29 December observance and links it to the legacy of cellist Pablo Casals.

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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