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Evergreen date guide

What is celebrated on December 17?

For 2026, these source-backed observances resolve to Thursday, December 17. Recurring rules can move in another year, so each record keeps its own date logic.

Date authority profile

What this date contains

5 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.

4 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 17

All topics →
Food, Drink & Hospitality 2Civic, Remembrance & History 1Workplace, Professions & Appreciation 1Relationships & Family 1
5 date-resolved records

All observances on this date

Source-backedFixed Annual

National Device Appreciation Day

17 December · United States / informal technology-appreciation observance

National Today gives National Device Appreciation Day an every-December-17 recurrence, and EventGuide independently lists it every December 17.

Source-backedFixed Annual

National Maple Syrup Day

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

Two Association of Nutrition & Foodservice Professionals chapter calendars from different publication years list National Maple Syrup Day on 17 December.

Source-backedFixed Annual

National Maple Syrup Day Canada

17 December · Canada / informal food observance; date also recognized across North America

National Today places the Canada-labelled observance on December 17, while U.S. GovInfo independently notes that National Maple Syrup Day is an unofficial observance celebrated annually on…

Source-backedFixed Annual

Wright Brothers Day

17 December annually · United States / statutory aviation commemoration

36 U.S.C. §143 designates December 17 as Wright Brothers Day and states that it commemorates the first successful heavier-than-air mechanically propelled airplane flights by Orville and Wil…

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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