Evergreen date guide

What is celebrated on January 11?

See the observances and verified observance-history milestones attached to January 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.

2017

First observance

International Parity at Work Day

WEConnect International states that the inaugural International Parity at Work Day was celebrated around the world on 11 January 2017; the UK Foreign Office independently describe…

About this date

What this date contains

5 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.

5 have in-depth guides

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

Reviewed depth

Other in-depth guides on January 11

Source-backedFixed AnnualIn-depth guide

Birth anniversary of National Artist Atang de la Rama

11 January · Philippines / DILG cultural advocacy calendar

Philippine government cultural sources verify Honorata “Atang” de la Rama’s birth on January 11, 1902 and her National Artist recognition for Theater and Music. The inherited DILG cultural…

Source-backedFixed AnnualIn-depth guide

International Parity at Work Day

11 January · International / workplace gender-parity awareness observance recognized in institutional publications

UK Foreign Office and ILOSTAT publications have recognized International Parity at Work Day; trade-union guidance places it on January 11.

Source-backedFixed AnnualIn-depth guide

Kosrae State Constitution Day

11 January; observed-date adjustments may be directed when necessary · Kosrae State, Federated States of Micronesia / state government holiday

Kosrae law lists Kosrae State Constitution Day on 11 January and provides a mechanism for written holiday-date adjustments.

Source-backedFixed AnnualIn-depth guide

National Arkansas Day

11 January · United States / National Day Calendar National State Days series — Arkansas

National Day Calendar lists National Arkansas Day on 11 January as part of its creator-defined National State Days series, introduced in 2017 to honor states in the order they joined the Un…

Source-backedFixed AnnualIn-depth guide

National Human Trafficking Awareness Day / #WearBlueDay

11 January · United States / January 11 trafficking-awareness observance and DHS Blue Campaign #WearBlueDay

The U.S. Senate agreed to S. Con. Res. 40 on June 22, 2007 supporting the goals and ideals of observing a National Day of Human Trafficking Awareness on January 11 each year. The reviewed r…

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Topics represented on January 11

All topics →

Civic, Remembrance & History 3 Workplace, Professions & Appreciation 1 Health, Wellness & Awareness 1

5 observances

All observances on this date

Source-backedFixed AnnualIn-depth guide

Birth anniversary of National Artist Atang de la Rama

11 January · Philippines / DILG cultural advocacy calendar

Philippine government cultural sources verify Honorata “Atang” de la Rama’s birth on January 11, 1902 and her National Artist recognition for Theater and Music. The inherited DILG cultural…

Source-backedFixed AnnualIn-depth guide

International Parity at Work Day

11 January · International / workplace gender-parity awareness observance recognized in institutional publications

UK Foreign Office and ILOSTAT publications have recognized International Parity at Work Day; trade-union guidance places it on January 11.

Source-backedFixed AnnualIn-depth guide

Kosrae State Constitution Day

11 January; observed-date adjustments may be directed when necessary · Kosrae State, Federated States of Micronesia / state government holiday

Kosrae law lists Kosrae State Constitution Day on 11 January and provides a mechanism for written holiday-date adjustments.

Source-backedFixed AnnualIn-depth guide

National Arkansas Day

11 January · United States / National Day Calendar National State Days series — Arkansas

National Day Calendar lists National Arkansas Day on 11 January as part of its creator-defined National State Days series, introduced in 2017 to honor states in the order they joined the Un…

Source-backedFixed AnnualIn-depth guide

National Human Trafficking Awareness Day / #WearBlueDay

11 January · United States / January 11 trafficking-awareness observance and DHS Blue Campaign #WearBlueDay

The U.S. Senate agreed to S. Con. Res. 40 on June 22, 2007 supporting the goals and ideals of observing a National Day of Human Trafficking Awareness on January 11 each year. The reviewed r…

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 →