Day Guide for Tuesday September 15th 2026 What are the holidays on September 15th 2026?

This is our day guide for Tuesday September 15th 2026 which shows you at a glance what's happening on this day around the world. Using the calendar on this page, you can look at a day guide for any day. Why not look up your birthday to see which holidays you share it with?

Holidays on September 15th 2026

Costa Rica: Independence Day

Local celebrations, national pride and a spirit of community mark Costa Rica’s Independence Day. One of the year’s most important holidays, Costa Rica celebrates its freedom from colonial Spain with peaceful festivities and historic traditions.

El Salvador: Independence Day

Celebrates independence from Spain, achieved in 1821

Guatemala: Independence Day

Commemorates independence of the Central American provinces from Spanish rule in 1821

Honduras: Independence Day

Commemorates the independence of the Central American provinces from Spanish rule in 1821

Regional

India (regional): Ganesh Chaturthi Holiday

Goa observes a second public holiday for Ganesha Chaturthi; the day when all Hindus celebrate Lord Ganesh

Regional

India (regional): Samvatsari

The last day of Paryushana, the most important holy event of the year for Jains.

Regional

India (regional): Nuakhai

Nuakhai is an agricultural festival observed by people of western Odisha to welcome the new rice of the season

Nicaragua: Independence Day

Commemorates independence of the Central American provinces from Spanish rule in 1821

Slovakia: Day of Our Lady of Sorrows

In 1727, Pope Benedict XIII declared Our Lady of Sorrows to be respected by the Church and its members as a Patron of Slovakia and later in 1966 was declared by Pope Paul VI as the main Patron.

Zimbabwe: Munhumutapa Day

Honours the pre-colonial ruler Munhumutapa and President Mnangagwa's vision of national development.

Observances on September 15th 2026

USA: Google.com Day

Maybe Google should do a do0dle for their birthday?

USA: Greenpeace Day

Find out the dates, history and traditions of Greenpeace Day

United Nations: International Day of Democracy 

The International Day of Democracy provides an opportunity to review the state of democracy in the world.

USA: International Dot Day

A day to consider the mark that you make upon the world.

USA: National Creme de Menthe Day

Find out the dates, history and traditions of National Creme de Menthe Day

USA: National Double Cheeseburger Day

Find out the dates, history and traditions of National Double Cheeseburger Day

USA: National Felt Hat Day

Find out the dates, history and traditions of National Felt Hat Day

USA: National Linguine Day

Find out the dates, history and traditions of National Linguine Day

Slovenia: Return of Primorska to the Motherland

Primorsko Reunification Day has been a national holiday since 2006, but it is not a work-free day.

Serbia: Serbian Unity, Freedom and National Flag Day

The Salonica front, was a military theatre of the first world war formed as a result of an attempt by the Allied Powers to aid Serbia, in 1915, against the combined attack of Germany, Austria-Hungary and Bulgaria.

International: World Afro Day

A day where people are encouraged to celebrate kinky, coiled or curly afro textured hair and to learn more about it.

USA: Hispanic Heritage Month

The monthlong period is a time to learn about the people who have influenced America in such a great way and learn about the culture that has significantly influenced American culture.

USA: National Online Learning Day

National Online Learning Day showcases how students of all ages are thriving with the ability to learn online—anywhere, anytime.

September 14th 2026 | Go to Today | September 16th 2026

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General Information for September 15th 2026
There are 10 public holidays today.
Day 258 of 2026
107 days left in 2026
Week 38 of the year
On this Day in History
1978 - Muhammad Ali outpointed Leon Spinks in a rematch to become the first boxer to win the world heavyweight title 3 times at the Superdome in New Orleans.
1948 - The F-86 Sabre sets the world aircraft speed record at 671 miles per hour (1,080 km/h).
1820 - Constitutionalist revolution in Lisbon, Portugal.
1440 - Gilles de Rais, one of the earliest known serial killers, is taken into custody upon an accusation brought against him by the Bishop of Nantes.