Day Guide for Friday September 17th 2021 What are the holidays on September 17th 2021?

This is our day guide for Friday September 17th 2021 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 17th 2021

Angola: National Heroes' Day

Marks the birthday of the national hero Agostinho Netowho was born on this day in 1922.


Bhutan (regional): Thimphu Tshechu

Tshechu are annual religious Bhutanese festivals held in each district of Bhutan

Chile: Independence Day Holiday

As Independence Day falls on a Saturday, the preceding Friday will be a national holiday.


Spain (regional): Day of Melilla

Melilla only. Marks the taking of the city by Duke of Medina Sidonia in 1497

Tonga: Birthday of HRH Crown Prince

The current heir to the throne was born on September 17th 1985

Observances on September 17th 2021

USA: Constitution Day and Citizenship Day

One of the most patriotic holidays, today celebrates both the constitution and citizens of the USA.

USA: National Apple Dumpling Day

Find out the dates, history and traditions of National Apple Dumpling Day

Honduras: Teachers Day

Find out the dates, history and traditions of Teachers Day

USA: National POW/MIA Recognition Day

Find out the dates, history and traditions of National POW/MIA Recognition Day

USA: National Trademen Day

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

International: Grenache Day

Grenache is a popular red wine that grows in hot and dry conditions.

International: World Patient Safety Day

World Patient Safety Day was established to enhance global understanding of patient safety

Belarus: Day of People's Unity

Find out the dates, history and traditions of the Day of People's Unity in Belarus.

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General Information for September 17th 2021
There are 5 public holidays today.
Day 260 of 2021
105 days left in 2021
Week 37 of the year
On this Day in History
1991 - Estonia, North Korea, South Korea, Latvia, Lithuania, the Marshall Islands and Micronesia join the United Nations.
1948 - The Nizam of Hyderabad surrenders his sovereignty over the Hyderabad State and joins the Indian Union.
1916 - World War I: Manfred von Richthofen ("The Red Baron"), a flying ace of the German Luftstreitkräfte, wins his first aerial combat near Cambrai, France.
1176 - The Battle of Myriokephalon is fought.