An environmental advocacy day on March 11 raising awareness about the endangered Key deer, their conservation needs, and threats like habitat loss, vehicle collisions, and sea level rise in the Florida Keys.

An awareness observance on March 11 promoting nasal irrigation and hygiene to clean nasal passages, prevent respiratory infections, and enhance upper airway health.

A cultural observance on the 15th day of the first lunar month celebrating the traditional Lantern Festival with large-scale lantern displays, sky lanterns, fireworks, and folk activities promoting good fortune and Taiwanese cultural heritage.

An awareness observance on the second Wednesday in March encouraging smokers to quit and raising awareness about the health risks of tobacco use.

A fun observance on March 11 celebrating the creative and elaborate ways high school students ask each other to prom.

A cultural observance on March 11 celebrating the life and legacy of John Chapman (Johnny Appleseed), the pioneer nurseryman who planted apple trees across the American frontier and promoted conservation.

A fan observance on March 11 featuring marathon concerts by the rock band 311, honoring their music and dedicated fanbase with extended sets and rare performances.

An appreciation day on March 11 recognizing funeral directors and morticians for their compassionate service in helping families honor loved ones during times of grief.

An awareness observance on March 11 honoring those who died during the COVID-19 pandemic, supporting those still struggling, expressing gratitude to essential workers, and promoting hope and healing.

An awareness observance on March 11 highlighting the critical role plumbing plays in protecting public health, providing access to clean water and sanitation, and promoting environmental sustainability.

A heritage observance on March 11 celebrating the legacy of King Moshoeshoe I, founder and first king of Lesotho, who united the Basotho nation and protected its sovereignty.

An appreciation day on the second Wednesday in March recognizing registered dietitian nutritionists as food and nutrition experts who translate nutrition science into practical solutions for healthy living.

A cultural observance on March 11 promoting understanding and appreciation of diverse Muslim cultures through film, art, and dialogue to build bridges between faiths and combat stereotypes.

A fun observance on March 11 celebrating tools used for building, repairing, and creating, honoring their essential role in daily life and DIY projects.

A cultural observance on March 11 celebrating the no-code movement and technology that enables anyone to build apps, automate workflows, and solve problems without programming skills.

National awareness day on the second Wednesday in March in the United Kingdom to highlight challenges faced by young carers and advocate for their support.

A heritage observance on March 11 commemorating the adoption of the Act on the Re-establishment of the Independent State of Lithuania in 1990, restoring independence from Soviet occupation.