Day Guide for Sunday September 21st 2025 What are the holidays on September 21st 2025?

This is our day guide for Sunday September 21st 2025 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 21st 2025

Armenia: Independence Day

Armenia was the first non-Baltic republic to secede from the Soviet Union, on this day in 1991

Belize: Independence Day

Commemorates Independence from the United Kingdom in 1981

Cambodia: Ancestors' Day

Pchum Ben, also known as Ancestors' Day, is a Cambodian religious festival which culminates on the 15th day of the tenth month in the Khmer calendar, marking the end of the Buddhist lent

Regional

India (regional): Sree Narayana Guru Samadhi

Marks the death ceremony of the Sree Narayana Guru, saint, prophet and social reformer from Kerala

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India (regional): Bathukamma Starting Day

Bathukamma is floral festival celebrated by the Hindu women of Telangana

Regional

India (regional): Mahalaya

Marks the first day of the festival of Durga Puja

Malta: Independence Day

Malta gained its political Independence from Great Britain on September 21st 1964

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Switzerland (regional): Swiss Federal Fast

A Swiss government-arranged multi-denominational holiday celebrated by Christians and the Jewish community

Observances on September 21st 2025

USA: Wife Appreciation Day

A gentle reminder - don't just appreciate your wife on the third Sunday in September!

United Nations: International Day of Peace 

The International Day of Peace is celebrated annually on 21 September and is a United Nations-commissioned global holiday.

USA: National Pecan Cookie Day

Find out the dates, history and traditions of National Pecan Cookie Day

USA: World Alzheimer’s Day

2 out of every 3 people globally believe there is little or no understanding of dementia in their countries.

United Kingdom: Telegraph Pole Appreciation Day

Find out the dates, history and traditions of Telegraph Pole Appreciation Day.

USA: National Gratitude Day

Celebrate World Gratitude Day by embracing thankfulness, enhancing well-being, and fostering global connections. Discover the power of gratitude today!

September 20th 2025 | Go to Today | September 22nd 2025

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General Information for September 21st 2025
There are 8 public holidays today.
Day 264 of 2025
101 days left in 2025
Week 38 of the year
On this Day in History
1942 - The B-29 Superfortress makes its maiden flight.
1843 - John Williams Wilson takes possession of the Strait of Magellan on behalf of the newly independent Chilean government.
1217 - Livonian Crusade: The Estonian leader Lembitu and Livonian leader Kaupo the Accursed are killed in Battle of Matthew's Day.
1170 - Combined English and Irish forces, under the command of Richard de Clare, Earl of Pembroke and Diarmait Mac Murchada, King of Leinster seize Norse-Gaelic Dublin, forcing Ascall mac Ragnaill, King of Dublin into exile.