September 23rd is the 266th day of the Gregorian calendar. Harvard College held its first commencement exercises; Pilot Earle Ovington delivered the first batch of official American airmail. Bob Marley appeared at his final concert in Pittsburgh, Pennsylvania. Famous birthdays include Augustus Caesar, Bruce Springsteen and John Coltrane.
We have 28 holidays listed for September 23.
The days are getting shorter, the nights longer, and the cool, crisp weather rolls in.
Education Technology Day
It’s time to appreciate and learn more about technology on this Educational Technology Day!
First Day of Autumn
The cool air of autumn approaches — welcome a season that needs warm clothing and hearty meals.
International Day of Sign Languages
Want to learn a new language? Sign language is just the perfect pick!
International Rabbit Day
Get ready to celebrate our fluffy rabbit friends this International Rabbit Day!
International Rabbit Day
Let’s get to know a bit more about how our cute woodland friends got their holiday.
National AFM Day
Get to learn more about A.F.M., the disease recently discovered and spiking in numbers.
National Apple Cider Vinegar Day
It might be bitter to swallow, but here are some facts to help the medicine go down.
National Baker Day
Baker is the last name with pedigree and ancient roots dating back to the Middle Ages.
National Bunny Day
What's up, doc? National Bunny Day promotes healthy environments for raising bunnies as pets.
National Dogs in Politics Day
The First Dog of the United States holds an important place in our hearts.
National Field Marketer’s Day
Time to prepare your very best sales pitch on this National Field Marketers’ Day!
National Go With Your Gut Day
It’s time for that health check with National Go With Your Gut Day!
National Great American Pot Pie Day
Get your bellies ready, and your hearts merry, for this savory celebration.
National Hunting and Fishing Day
Celebrate the outdoor activities of hunting and fishing while emphasizing conservation.
National Snack Stick Day
Get yourself some snack sticks as we celebrate a traditional family snack.
National Temperature Control Day
Surprise! Summer does not begin on Memorial Day — nor does it end on Labor Day.
Porthcawl Elvis Festival
This is an exciting festival that pays tribute to one of the biggest stars that ever lived.
Redhead Appreciation Day
Redheads are like rare birds of paradise, making up just four percent of the world’s population!
Restless Legs Awareness Day
Get excited as we dish out some hardcore educational tips and facts about a lifelong neurological condition!
Teal Talk Day
Gather your friends, wear teal for a day out together and talk about ovarian cancer!
The September Equinox
The September Equinox is an important astronomical event with different meanings around the world.