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Evergreen date guide

What is celebrated on March 10?

See the observances and verified observance-history milestones attached to March 10. 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.

2026
Later action

International Coffee Day

Proclaimed 1 October as International Coffee Day at United Nations General Assembly level while the ICO observance already existed.

2026
Institutional decision

International Wellness Day

The UN Digital Library records adoption at the 73rd plenary meeting on 10 March 2026.

2022
First observance

International Day of Women Judges

The UN Secretary-General’s noon briefing explicitly states that 10 March 2022 marked the first International Day of Women Judges.

2015
Later action

National Purebred Dog Day

Colorado became the first U.S. state to recognize May 1 as National Purebred Dog Day.

1960
First observance

Tibetan National Uprising Day

The CTA compilation states that the Dalai Lama addressed Tibetans on the first anniversary in 1960 and began formal written anniversary statements from the second anniversary in 1…

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.

2 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.

Reviewed depth

Other in-depth guides on March 10

Source-backedFixed AnnualIn-depth guide

Histotechnology Professionals Day

10 March annually; 10 March 2026 verified · National Society for Histotechnology / professional appreciation observance

The National Society for Histotechnology identifies March 10, 2026 as Histotechnology Professionals Day and states that it began in 2010 with annual participation resources.

Source-backedFixed AnnualIn-depth guide

International Day of Awesomeness

10 March · International / informal creator-led celebration maintained by the observance’s first-party site

The official International Day of Awesomeness site identifies Kevin Lawver as the creator, traces the idea to August 6, 2007, says the observance occurs every March 10, explains that the da…

Source-backedFixed AnnualIn-depth guide

MAR10 Day / Mario Day

10 March each year · Nintendo / Mario fan celebration

Nintendo official material verifies March 10 as MAR10 Day / Mario Day and the MAR 10 → MARIO visual wordplay; original creator, formal adoption year and first recurring edition remain unass…

Source-backedFixed AnnualIn-depth guide

National Blueberry Popover Day

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

ANFP Wyoming and Wisconsin chapter calendars list National Blueberry Popover Day on March 10.

Source-backedRule Based AnnualIn-depth guide

National Organize Your Home Office Day

Second Tuesday in March · United States / informal home-office organization observance created by Lisa Kanarek

Current historical references identify Lisa Kanarek as creator, trace the observance to 1992, and document a move from the fourth Tuesday in March (1992–1999) to the second Tuesday beginnin…

Explore the mix

Topics represented on March 10

All topics →
Workplace, Professions & Appreciation 2Celebrations & Social 2Arts, Entertainment & Lifestyle 1Food, Drink & Hospitality 1Health, Wellness & Awareness 1Civic, Remembrance & History 1
8 observances

All observances on this date

Source-backedFixed AnnualIn-depth guide

Histotechnology Professionals Day

10 March annually; 10 March 2026 verified · National Society for Histotechnology / professional appreciation observance

The National Society for Histotechnology identifies March 10, 2026 as Histotechnology Professionals Day and states that it began in 2010 with annual participation resources.

Source-backedFixed AnnualIn-depth guide

International Day of Awesomeness

10 March · International / informal creator-led celebration maintained by the observance’s first-party site

The official International Day of Awesomeness site identifies Kevin Lawver as the creator, traces the idea to August 6, 2007, says the observance occurs every March 10, explains that the da…

Source-backedFixed AnnualIn-depth guide

MAR10 Day / Mario Day

10 March each year · Nintendo / Mario fan celebration

Nintendo official material verifies March 10 as MAR10 Day / Mario Day and the MAR 10 → MARIO visual wordplay; original creator, formal adoption year and first recurring edition remain unass…

Source-backedFixed AnnualIn-depth guide

National Blueberry Popover Day

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

ANFP Wyoming and Wisconsin chapter calendars list National Blueberry Popover Day on March 10.

Source-backedRule Based AnnualIn-depth guide

National Organize Your Home Office Day

Second Tuesday in March · United States / informal home-office organization observance created by Lisa Kanarek

Current historical references identify Lisa Kanarek as creator, trace the observance to 1992, and document a move from the fourth Tuesday in March (1992–1999) to the second Tuesday beginnin…

Source-backedFixed AnnualIn-depth guide

National Women and Girls HIV/AIDS Awareness Day

10 March annually; 10 March 2026 edition verified · United States / federal women and girls HIV awareness observance

HIV.gov, the HHS Office on Women’s Health and CDC verify March 10 and current federal stewardship. Federal sources disagree on whether the first annual observance was 2005 or 2006, so first…

Source-backedFixed AnnualIn-depth guide

Tibetan National Uprising Day

10 March · March 10 remembrance observed by the Central Tibetan Administration and Tibetan diaspora communities; politically contested historical context

CTA archives establish recurring March 10 anniversary statements and a first-anniversary address in 1960; U.S. historical records independently anchor events beginning in Lhasa on March 10,…

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 →