- Number of holidays
- 49
- Day of the year
- 80
- Days left in the year
- 285
National Flower Day lands on the cusp of spring, honoring the bloom as winter’s exit signal and the start of the growing season’s main act. World Down Syndrome Day was chosen by Down Syndrome International because 3/21 represents the triplication of chromosome 21 — trisomy 21 — the genetic signature of the condition. Big Bang Day was created to encourage curiosity about cosmology and the origins of the universe. International Day of Nowruz is the UN-recognized celebration of the Persian New Year, a 3,000-year-old spring observance for more than 300 million people across Central Asia, the Middle East, and the diaspora.
All holidays on March 21
National Common Courtesy Day
World Poetry Day
Afghanistan Day
Big Bang Day
Credit Card Reduction Day
Education Freedom Day
Egypt Mother's Day
Harmony Day
Holika Dahana
Holy Week
Human Rights Day South Africa
International Colour Day
International Day of Nowruz
Memory Day
Namibia Independence Day
National California Strawberry Day
National Crunchy Taco Day
National Flower Day
National Fragrance Day
National French Bread Day
National Healthy Fats Day
National Renewable Energy Day
National Single Parent Day
Nauryz Day
Nowruz Bayram
Palm Sunday
Palm Sunday Orthodox
Race Relations Day
Rosie The Riveter Day
Semana Santa Spain
Slytherin Pride Day
Spring Fairy Fun Day
The Big Walk and Wheel
Twitter Day
Vermouth Day
WE Day
World Down Syndrome Day
World Forestry Day
World Puppetry Day
About March 21
March 21 Q&As
What is the most popular holiday on March 21?
On March 21, International Day of Nowruz is the most globally observed holiday, celebrated by more than 300 million people as the Persian New Year. World Down Syndrome Day is the most recognized global health observance, and World Poetry Day is the major UNESCO cultural observance, proclaimed in 1999.
What countries celebrate holidays on March 21?
March 21 observances span South Africa (Human Rights Day South Africa), Namibia (Namibia Independence Day), Afghanistan (Afghanistan Day), Australia (Harmony Day), Kazakhstan and Turkmenistan (Nauryz Day, Nowruz Bayram), Egypt (Egypt Mother’s Day), and the global Nowruz diaspora (International Day of Nowruz).
What awareness days are on March 21?
March 21 includes World Down Syndrome Day, International Day for the Elimination of Racial Discrimination, International Day of Forests, Save the Florida Panther Day, and National Day Of Action On Syringe Exchange.
