Observances this week

Fast of Gedaliah / Tzom Gedaliah

14 September in 2026 · Jewish minor fast and remembrance observance

Chabad’s current Jewish calendar lists the Fast of Gedaliah on 14 September 2026 (3 Tishrei 5787).

Ganesh Chaturthi / Vinayaka Chaturthi

14 September in the cited Government of India 2026 holiday calendar · India and Hindu communities; movable religious festival

A Government of India holiday calendar lists Ganesh Chaturthi / Vinayaka Chaturthi on 14 September 2026.

National Cream Filled Donut Day

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

Two Association of Nutrition & Foodservice Professionals chapter calendars from different publication years list National Cream Filled Donut Day on 14 September.

National Rosa Tequila Day

14 September · International / informal tequila-industry observance

National Today and Awareness Days independently place National Rosa Tequila Day on September 14; Awareness Days describes it as an informal industry-driven observance.

National Virginia Day

14 September · United States / National Day Calendar National State Days series — Virginia

National Day Calendar lists National Virginia Day on 14 September. The U.S. Senate records Virginia’s admission/statehood date as 25 June 1788. These are separate facts: the calendar listin…

World Atopic Eczema Day

14 September · Organizer-backed global health awareness observance

GlobalSkin and the international atopic-eczema community

Get Ready Day

Third Tuesday in September; 15 September in 2026 · American Public Health Association / emergency preparedness

APHA places Get Ready Day on the third Tuesday in September as part of its preparedness initiative

Grito de Independencia / Grito de Dolores

15 September ceremony, preceding Mexico’s Independence Day on 16 September · Mexico; national independence commemoration tradition

Government of Mexico material describes the Grito de Independencia ceremony on 15 September, commemorating the historical call associated with the start of independence.

Independence Day

15 September · Costa Rica

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Costa Rica — Independence Day on 15 September. The source verifies the diplomatic national-…

Independence Day

15 September · El Salvador

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists El Salvador — Independence Day on 15 September. The source verifies the diplomatic national…

Independence Day

15 September · Guatemala

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Guatemala — Independence Day on 15 September. The source verifies the diplomatic national-d…

Independence Day

15 September · Honduras

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Honduras — Independence Day on 15 September. The source verifies the diplomatic national-da…

Independence Day

16 September · Papua New Guinea

Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Papua New Guinea — Independence Day on 16 September. The source verifies the diplomatic nat…

International Day for Interventional Cardiology

16 September · United Nations / international observance

A/RES/76/302

International Day for the Preservation of the Ozone Layer

16 September · United Nations / international observance

A/RES/49/114

International Day of Science, Technology and Innovation for the South

16 September · United Nations / international observance

A/RES/78/259

Malaysia Day

16 September · Malaysia national public holiday / national celebration

Government of Malaysia official portal

Mexico Independence Day

16 September · Mexico

The Organization of American States’ current country page lists Mexico National Independence Day as 16 September.

AKC Responsible Dog Ownership Day

17 September annually · American Kennel Club / responsible dog ownership campaign

The American Kennel Club designated September 17, the anniversary of the AKC’s founding, as AKC Responsible Dog Ownership Day and continues to publish the observance through its Responsible…

Australian Citizenship Day

17 September each year · Australian national citizenship observance

Australian Department of Home Affairs

Constitution Day and Citizenship Day

17 September · United States

The U.S. Courts’ official educational observance page identifies Constitution Day and Citizenship Day around 17 September, the anniversary of the Constitution’s signing.

International Country Music Day

17 September · International / informal country-music appreciation observance

Timeanddate identifies September 17 as International Country Music Day and treats it as an unofficial observance.

National Apple Dumpling Day

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

Two Association of Nutrition & Foodservice Professionals chapter calendars from different publication years list National Apple Dumpling Day on 17 September.

National DEI Day

17 September · United States / National DEI Day organizer-led observance

The National DEI Day organizer site states that the observance is held each year on September 17, deliberately coinciding with U.S. Constitution Day and Citizenship Day.

Chile Independence Day

18 September · Chile

The Organization of American States’ current country page lists Chile National Independence Day as 18 September.

International Equal Pay Day

18 September · United Nations international observance

A/RES/74/142

International Grenache Day

Third Friday of September; 18 September in 2026 · International Grenache/wine-community observance

Wine International Association’s current 2026 calendar places International Grenache Day on 18 September and identifies the third-Friday rule; Grenache Association campaign material documen…

National Cheeseburger Day

18 September · United States / informal food observance with first-party burger-brand corroboration

Wendy’s first-party material identifies September 18 as National Cheeseburger Day.

National Concussion Awareness Day®

Third Friday of September; 18 September 2026 · United States / organizer-led concussion awareness

The official National Concussion Awareness Day site identifies Friday, September 18, 2026, states that the observance is recognized on the third Friday of September yearly, and describes it…

National First Love Day

18 September · United States / informal relationship observance

National Today gives National First Love Day a fixed September 18 recurrence, and Days Of The Year independently lists National First Love Day on September 18.

Aortic Dissection Awareness Day

19 September annually; 19 September 2026 global event verified · Global / aortic-disease awareness campaign

The Aortic Dissection Charitable Trust states that September 19 marks Aortic Dissection Awareness Day every year and lists a global September 19, 2026 event.

Batman Day

19 September in 2026 · DC / global Batman fan event

DC’s official Batman Day announcement identifies the 2026 event date and fan celebration

Boys’ and Girls’ Club Day for Kids

Third Saturday of September (19 September in 2026) · United States / youth-community observance associated with Boys & Girls Clubs

Current observance calendars consistently place Boys’ and Girls’ Club Day for Kids on the third Saturday of September.

Día de las Glorias del Ejército

19 September · Chile Army civic-military commemoration and legal holiday

Chilean Army; legal-holiday tradition traced to a 1915 decree

International Coastal Cleanup®

Third Saturday of September annually; 19 September in 2026 · Ocean Conservancy / global cleanup campaign

Ocean Conservancy states that the International Coastal Cleanup is held annually on the third Saturday of September, with many cleanups also occurring throughout the month.

International Eat An Apple Day

Third Saturday in September · International / informal food observance

National Day Calendar and National Today independently define International Eat an Apple Day as the third Saturday in September each year.

International Day of University Sport

20 September · UNESCO international day

National Care for Kids Day®

20 September · United States / Care for Kids and Designetics Cares-created child-support observance

Designetics states it created National Care for Kids Day to be held annually on September 20, and the Care for Kids organization lists the September 20, 2026 edition.

National Crime and Intelligence Analyst Appreciation Day

20 September · United States / crime and intelligence analyst professional recognition created by FCIAA

The Florida Crime & Intelligence Analyst Association states that it created NCIAAD in 2021 and promotes the sixth annual observance on September 20, 2026; IALEIA also recognizes the day.

National Fried Rice Day

20 September · United States / Benihana-created food observance

Benihana declared September 20 the first annual National Fried Rice Day in 2018 and has continued to associate the observance with that date.

National String Cheese Day

20 September · United States / Galbani Cheese-founded informal food observance registered through National Day Calendar

National Day Calendar’s proclamation record identifies Galbani Cheese as the 2017 founder and establishes September 20 as the annual observance date.

NFT Day / International NFT Day

20 September annually · Web3 industry / creator consortium observance

The inaugural NFT Day announcement says a consortium of Web3 companies launched NFT Day on September 20, 2022 as an annual moment for the community, tied to the 2017 publication of the ERC-…