September 15 national days 2026
On September 15th, 7 national days fall on this date.
September 15 is a date on the 2026 national-day calendar. TheDayOf currently lists 7 observances for this date: National Double Cheeseburger Day, National Linguine Day, National Cheese Toast Day, World Lymphoma Awareness Day, National Miniature Horse Day, National Voter Registration Day, and International Day of Democracy. Open any day page for the date, history, and how to celebrate, or browse the rest of September from the month hub.
National Double Cheeseburger Day
National Double Cheeseburger Day on September 15 is for two patties and cheese. It is not National Hamburger Day (May 28) or National…
National Linguine Day
National Linguine Day on September 15 is for the flat, narrow pasta. It is a shape-specific Italian American food date, informal.
National Cheese Toast Day
National Cheese Toast Day on September 15 is for toasted bread with melted cheese — not quite a full Welsh rarebit sauce. It is a simple…
World Lymphoma Awareness Day
World Lymphoma Awareness Day on September 15 is a global health date for Hodgkin and non-Hodgkin lymphomas. It is an awareness day, not a…
National Miniature Horse Day
Think small on Miniature Horse Day! These tiny horses stand under 34 inches tall. They're used as service animals, therapy horses, and…
National Voter Registration Day
National Voter Registration Day in 2026 falls on Tuesday, September 15 — the civic date used to help eligible people register to vote. It…
International Day of Democracy
The International Day of Democracy on September 15 is a United Nations date for democratic institutions and participation. It is not a U.S…