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Evergreen date guide

What is celebrated on February 11?

See the observances and verified observance-history milestones attached to February 11. Each observance keeps its own source and date details.

Verified history

On this date in observance history

Today in history →

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

2019
Institutional decision

National Break Up With Your Carrier Day

T-Mobile’s February 11, 2019 launch release states that National Day Calendar announced the new February 13 observance that day.

1979
First observance

National Inventors’ Day

Public Law 95-463 and Proclamation 4635 specifically designate and call for observance on February 11, 1979; this is the earliest federal edition confirmed in this review.

About this date

What this date contains

8 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.

4 have a country-specific scope

Country-specific observances are not presented as worldwide events.

8 have in-depth guides

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

Curated global anchors

Major global guides on February 11

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A reviewed starting point drawn from prominent global observances with strong institutional or organizer sources. Each observance keeps its own documented status and scope.

Reviewed depth

Other in-depth guides on February 11

Source-backedFixed AnnualIn-depth guide

112 Day

11 February · Finland / 112 emergency-number safety-awareness observance, aligned with European 112 awareness

The Finnish Government states that 112 Day is observed every year on 11 February to raise awareness about safety and correct use of the emergency number.

Source-backedFixed AnnualIn-depth guide

National Foundation Day

11 February · Japan national public holiday

Prime Minister’s Office of Japan

Source-backedFixed AnnualIn-depth guide

National Inventors’ Day

11 February each year · United States / inventor recognition

Primary federal records show that Public Law 95-463 designated February 11, 1979 as National Inventors’ Day and authorized a Carter proclamation; later federal instruments again designated…

Source-backedEdition SpecificIn-depth guide

National Youth Day

11 February 2026; 60th edition · Cameroon / national youth commemoration

Cameroon’s state broadcaster publishes the President’s message for the 60th edition of National Youth Day in February 2026, while the official youth-event platform identifies 11 February as…

Source-backedFixed AnnualIn-depth guide

Peppermint Patty Day

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

Two Association of Nutrition & Foodservice Professionals chapter calendars list Peppermint Patty Day on 11 February.

Source-backedFixed AnnualIn-depth guide

Victory of the Islamic Revolution in Iran

11 February · Iran / national day and public-holiday observance; politically neutral descriptive treatment

Iranian Ministry of Foreign Affairs consular holiday material lists 22 Bahman / 11 February as Victory of the Islamic Revolution, while diplomatic protocol sources identify the same date as…

Explore the mix

Topics represented on February 11

All topics →
Community, Causes & Advocacy 2Civic, Remembrance & History 2Workplace, Professions & Appreciation 2Health, Wellness & Awareness 1Food, Drink & Hospitality 1
8 observances

All observances on this date

Source-backedFixed AnnualIn-depth guide

112 Day

11 February · Finland / 112 emergency-number safety-awareness observance, aligned with European 112 awareness

The Finnish Government states that 112 Day is observed every year on 11 February to raise awareness about safety and correct use of the emergency number.

Source-backedFixed AnnualIn-depth guide

National Foundation Day

11 February · Japan national public holiday

Prime Minister’s Office of Japan

Source-backedFixed AnnualIn-depth guide

National Inventors’ Day

11 February each year · United States / inventor recognition

Primary federal records show that Public Law 95-463 designated February 11, 1979 as National Inventors’ Day and authorized a Carter proclamation; later federal instruments again designated…

Source-backedEdition SpecificIn-depth guide

National Youth Day

11 February 2026; 60th edition · Cameroon / national youth commemoration

Cameroon’s state broadcaster publishes the President’s message for the 60th edition of National Youth Day in February 2026, while the official youth-event platform identifies 11 February as…

Source-backedFixed AnnualIn-depth guide

Peppermint Patty Day

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

Two Association of Nutrition & Foodservice Professionals chapter calendars list Peppermint Patty Day on 11 February.

Source-backedFixed AnnualIn-depth guide

Victory of the Islamic Revolution in Iran

11 February · Iran / national day and public-holiday observance; politically neutral descriptive treatment

Iranian Ministry of Foreign Affairs consular holiday material lists 22 Bahman / 11 February as Victory of the Islamic Revolution, while diplomatic protocol sources identify the same date as…

Source-backedFixed AnnualIn-depth guide

White Shirt Day

11 February annually in UAW tradition · United Auto Workers labor-history remembrance tied to the end of the Flint Sit-Down Strike

UAW sources describe White Shirt Day as an annual 11 February remembrance of the Flint Sit-Down Strike victory and worker dignity.

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.

Read the methodology →