Holiday Calendar
18 holidays observed on this day
Monday, September 21 2026

Monday,
September 21 2026

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What September 21 celebrates

18 holidays observed around the world. Sorted by what people are loving today.

International Day of Peace MOST LOVED TODAY
Awareness Social Justice International

International Day of Peace

Celebrate International Day of Peace by spreading love and kindness - make the world a better place with your actions!

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02
World Gratitude Day
Observance
World Gratitude Day

Give thanks and express your appreciation on World Gratitude Day - share your gratitude with family, friends, and loved ones!

Health Self-Care International
03
National Pecan Cookie Day
Food observance
National Pecan Cookie Day

Indulge in the sweet delights of National Pecan Cookie Day with our selection of delicious recipes - perfect for any occasion!

Food Baking United States
04
National Chai Day
Food observance
National Chai Day

Celebrate National Chai Day with a delicious cup of chai tea! Enjoy unique flavors and cozy vibes with a warm, comforting beverage.

Food Coffee United States
05
World Alzheimer’s Day
Awareness day
World Alzheimer’s Day

Join us in raising awareness for World Alzheimer's Day - spread the word and show your support to those living with dementia and their caregivers!

Awareness Health Conditions International
06
National Brittany Day
Observance
National Brittany Day

It's time to celebrate all the amazing Brittanys out there on National Brittany Day! Share your love for this name and the awesome people who bear it.

Names International
07
National Hannah Day
Observance
National Hannah Day

Calling all Hannahs! It's time to embrace your name and celebrate National Hannah Day with pride. Share your stories and connect with fellow Hannahs around the world.

Names International
08
National Cat & Dog Gut Health Awareness Day
Observance
National Cat & Dog Gut Health Awareness Day

Keep your furry friends happy and healthy on National Cat & Dog Gut Health Awareness Day with tips, treats, and vet-approved advice.

Animals Pets United States
09
National Opioid Awareness Day
Awareness day
National Opioid Awareness Day

Join us in raising awareness for National Opioid Awareness Day - learn more about the dangers of opioid abuse and how to get help!

Awareness Health Conditions United States
10
World Mini Golf Day
Observance
World Mini Golf Day

Get your putters ready and mark your calendars for World Mini Golf Day - a day full of fun, challenges, and maybe even a hole-in-one!

Sports Individual Sports International
11
Belize Independence Day
Observance
Belize Independence Day

Let's raise our flags and celebrate Belize Independence Day with pride, unity, and joy! Here's to the beautiful country and its people.

Culture Civics Belize
12
Miniature Golf Day
Observance
Miniature Golf Day

Putt your way to a fun-filled day on Miniature Golf Day! Whether you're a pro or just looking for some family fun, there's something for everyone.

Sports Outdoor Adventure International
13
National Kristina Day
Observance
National Kristina Day

It's time to celebrate all the amazing Kristinas out there on National Kristina Day! Share your love for these special namesakes with a shoutout or thoughtful gesture.

Names International
14
Escapology Day
Community origin
Escapology Day

Ready to escape the mundane? Join us for Escapology Day and test your skills with mind-bending puzzles, thrilling challenges, and ultimate escapes!

Fun Unique United States
15
Telegraph Pole Appreciation Day
Community origin
Telegraph Pole Appreciation Day

Show some love for the unsung heroes of our communication infrastructure on Telegraph Pole Appreciation Day - they keep us connected!

Fun Unique United Kingdom
16
Yom Kippur
Religious Origin
Yom Kippur

Observe Yom Kippur, a solemn day for introspection, prayer and seeking forgiveness, fostering a spirit of unity and renewal.

Religion Jewish International
17
Armenia Independence Day
Observance
Armenia Independence Day

Get ready to celebrate Armenia Independence Day in a big way - with parades, fireworks, traditional food and music, it's a day not to be missed!

Culture Civics Armenia
18
Malta Independence Day
Observance
Malta Independence Day

Let's raise a glass to Malta on their Independence Day! A day to celebrate freedom, culture, and the beautiful island nation.

Culture Civics Malta
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ALSO HAPPENING

This week & month

58 month-long observances and 9 week-long ones that include September 21.

Happy Cat Month
All of September
Happy Cat Month
Animals
National Suicide Prevention Month
All of September
National Suicide Prevention Month
Awareness
National Recovery Month
All of September
National Recovery Month
Awareness
​World Alzheimer’s Month
All of September
​World Alzheimer’s Month
Awareness
Pain Awareness Month
All of September
Pain Awareness Month
Awareness
Blood Cancer Awareness Month
All of September
Blood Cancer Awareness Month
Awareness
National Preparedness Month
All of September
National Preparedness Month
Awareness
Prostate Cancer Awareness Month
All of September
Prostate Cancer Awareness Month
Awareness
Attendance Awareness Month
All of September
Attendance Awareness Month
School
​Sexual Health Month
All of September
​Sexual Health Month
Awareness
Bear Necessities Month
All of September
Bear Necessities Month
Animals
National Chicken Month
All of September
National Chicken Month
Food
National Honey Month
All of September
National Honey Month
Food
Animal Pain Awareness Month
All of September
Animal Pain Awareness Month
Awareness
Responsible Dog Ownership Month
All of September
Responsible Dog Ownership Month
Animals
National Condiment Month
All of September
National Condiment Month
Food
Classical Music Month
All of September
Classical Music Month
Pop Culture
National Papaya Month
All of September
National Papaya Month
Food
National Pet Insurance Month
All of September
National Pet Insurance Month
Business
Hispanic Heritage Month
September 15 – October 15
Hispanic Heritage Month
Culture
Sea Otter Awareness Week
September 20–26
Sea Otter Awareness Week
Animals
Leukemia and Lymphoma Awareness Month
All of September
Leukemia and Lymphoma Awareness Month
Awareness
National Atrial Fibrillation Awareness Month
All of September
National Atrial Fibrillation Awareness Month
Awareness
Save Your Photos Month
All of September
Save Your Photos Month
Hobbies
Self Improvement Month
All of September
Self Improvement Month
Health
Buddhist Lent
July 30 – October 18
Buddhist Lent
Religion
Oddfellows Friendship Month
All of September
Oddfellows Friendship Month
Relationships
Baby Safety Month
All of September
Baby Safety Month
Awareness
Civil Service Month
All of September
Civil Service Month
Careers
Intergeneration Month
All of September
Intergeneration Month
Relationships
Liptember
All of September
Liptember
Awareness
Better Breakfast Month
All of September
Better Breakfast Month
Food
Bourbon Heritage Month
All of September
Bourbon Heritage Month
Food
Rule of Law Month
All of September
Rule of Law Month
Culture
Sourdough September
All of September
Sourdough September
Food
Childhood Cancer Awareness Month
All of September
Childhood Cancer Awareness Month
Awareness
Gynecologic Cancer Awareness Month
All of September
Gynecologic Cancer Awareness Month
Awareness
Healthy Aging Month
All of September
Healthy Aging Month
Health
International Week of Happiness at Work
September 20–25
International Week of Happiness at Work
Careers
National Childhood Obesity Awareness Month
All of September
National Childhood Obesity Awareness Month
Awareness
National Cholesterol Education Month
All of September
National Cholesterol Education Month
Awareness
National Food Safety Education Month
All of September
National Food Safety Education Month
Awareness
National Guide Dog Month
All of September
National Guide Dog Month
Awareness
National Save a Tiger Month
All of September
National Save a Tiger Month
Animals
Ovarian Cancer Awareness Month
All of September
Ovarian Cancer Awareness Month
Awareness
Sports Eye Safety Month
All of September
Sports Eye Safety Month
Awareness
Urology Awareness Month
All of September
Urology Awareness Month
Awareness
Vascular Disease Awareness Month
All of September
Vascular Disease Awareness Month
Awareness
World Fun Fair Month
All of September
World Fun Fair Month
Fun
Festival of Learning Have a Go Month
All of September
Festival of Learning Have a Go Month
School
Footy Colors Day
All of September
Footy Colors Day
Sports
National Jeans for Genes Day
September 21–27
National Jeans for Genes Day
Awareness
National Organic Month
All of September
National Organic Month
Health
National Peripheral Artery Disease Awareness Month
All of September
National Peripheral Artery Disease Awareness Month
Awareness
National Service Dog Month
All of September
National Service Dog Month
Animals
National Sewing Month
All of September
National Sewing Month
Hobbies
National Surgical Technologists Week
September 20–26
National Surgical Technologists Week
Careers
Organic September
All of September
Organic September
Health
Recycle Awareness Week
September 21–27
Recycle Awareness Week
Nature
World Candle Month
All of September
World Candle Month
Lifestyle
World Clean and Green Week
September 17–23
World Clean and Green Week
Nature
European Mobility Week
September 16–22
European Mobility Week
Awareness
Irish Heart Month
All of September
Irish Heart Month
Awareness
National Eye Health Week
September 21–27
National Eye Health Week
Awareness
National Peace Consciousness Month
All of September
National Peace Consciousness Month
Awareness
Newborn Screening Awareness Month
All of September
Newborn Screening Awareness Month
Awareness
Māori Language Week
September 14–21
Māori Language Week
Culture
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