September 21 national days 2026
On September 21st, 6 national days fall on this date.
September 21 is a date on the 2026 national-day calendar. TheDayOf currently lists 6 observances for this date: National Chai Day, National Pecan Cookie Day, National Alzheimer's Awareness Day, Yom Kippur, National Gratitude Day, and International Day of Peace. Open any day page for the date, history, and how to celebrate, or browse the rest of September from the month hub.
National Chai Day
National Chai Day on September 21 is for masala chai — spiced tea with milk — not a generic ‘tea day.’ It is an informal U.S…
National Pecan Cookie Day
National Pecan Cookie Day on September 21 is for cookies with pecans — sandies, chocolate-chip pecan, or similar. It is a baking date…
National Alzheimer's Awareness Day
Stand together against Alzheimer's on National Alzheimer's Awareness Day! This devastating disease affects millions of families worldwide…
Yom Kippur
The Day of Atonement. Yom Kippur is the holiest day in Judaism, a day of fasting, prayer, and repentance. Jews seek forgiveness and…
National Gratitude Day
Count your blessings and celebrate the power of gratitude on National Gratitude Day! Gratitude is one of the most powerful emotions…
International Day of Peace
Promote peace and unity around the world on International Day of Peace! This United Nations observance encourages all nations and peoples…