Day Guide for Sunday 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?

Observances on September 21st 2025

Wife Appreciation Day

Family
USA

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

National Pecan Cookie Day

Food
USA

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

World Alzheimer’s Day

Health
USA

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

Telegraph Pole Appreciation Day

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

International Day of Peace

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

Swiss Federal Fast

Switzerland

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

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General Information for September 21st 2025

There are 5 observances on this day.
365 days to go.
Day 264 of 2025
101 days left in 2025
Week 38 of the year

Moon phase

On this Day in History

1977 - A nuclear non-proliferation pact is signed by 15 countries, including the United States and the Soviet Union.
1976 - Seychelles joins the United Nations.
1971 - Bahrain, Bhutan and Qatar join the United Nations.
1942 - In Poland, at the end of Yom Kippur, Germans order Jews to permanently evacuate Konstantynów and move to the Ghetto in Biala Podlaska, established to assemble Jews from seven nearby towns, including Janów Podlaski, Rossosz and Terespol.
19BCE The death of the Roman poet Virgil; the creator of the Aeneid.