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Evergreen date guide

What is celebrated on December 17?

See the observances and verified observance-history milestones attached to December 17. Each observance keeps its own source and date details.

Verified history

On this date in observance history

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Selected observance milestones connected to this date, based on reviewed sources.

2018
Institutional decision

World Braille Day

Exact action/adoption date of the establishing instrument in the reviewed institutional/legal source.

2015
Later action

Nelson Mandela International Day

Extended the scope of Nelson Mandela International Day to promote humane conditions of imprisonment, awareness that prisoners remain part of society, and recognition of prison sta…

2012
Institutional decision

International Day of Charity

A/RES/67/105 identifies itself as a resolution adopted by the General Assembly on 17 December 2012.

2012
Later action

International Jazz Day

Welcomed UNESCO’s 2011 decision to proclaim 30 April International Jazz Day and called on Member States to participate actively in its celebration.

1999
Institutional decision

International Youth Day

Exact action/adoption date of the establishing instrument in the reviewed institutional/legal source.

1996
Institutional decision

World Television Day

UN Digital Library records A/RES/51/205 as adopted at the 88th plenary meeting on 17 December 1996.

About this date

What this date contains

1 observances

Each observance is shown once in this view, with its own source and scope details available on the guide page.

0 repeat predictably

0 use a fixed annual date and 0 follow a reusable calendar rule.

0 are edition-specific

These dates are shown only for the year or edition that has been confirmed.

1 have a country-specific scope

Country-specific observances are not presented as worldwide events.

1 have in-depth guides

These pages include reviewed meaning, history, activities, facts and FAQs.

Reviewed depth

Other in-depth guides on December 17

Source-backedFixed AnnualIn-depth guide

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…

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Topics represented on December 17

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Relationships & Family 1
1 observances

All observances on this date

Source-backedFixed AnnualIn-depth guide

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 dates are selected

This page combines fixed annual dates, reusable calendar rules and year-specific dates confirmed for 2026. Variable or historical dates are included only when they are clearly supported.

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