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International T-shirt Day - First Day of Summer


Every year on the first day of summer, International T-Shirt Day celebrates this cool piece of clothing. The day also encourages everyone around the world to wear their favorite t-shirt.

Most people have a few t-shirts in their closets or drawers. Popular all around the world, the t-shirt dates back to 1898. Laborers during this time would cut their jumpsuits in half in order to stay cool during the summer. In 1913, the U.S. Navy began issuing the t-shirt as an undershirt. Seven years later, F. Scott Fitzgerald coined the term t-shirt when he mentioned this piece of apparel in his book, This Side of Paradise.

Until Marlon Brando and James Dean came along, men only wore the t-shirt underneath a regular shirt. These two popular actors popularized wearing the t-shirt by themselves. Even then, many people considered wearing a t-shirt in this fashion as rebellious. Throughout the 1950s, slogans and Walt Disney characters helped to create the graphic t-shirt. In the 1970s, t-shirts with slogans were worn to make a statement. These graphic t-shirts became especially popular for those protesting the Vietnam War.

Today t-shirts are worn for many reasons. Some like them for the sheer comfort. Others enjoy the versatility they offer. Many organizations, fundraisers, and schools create custom t-shirts to show unity or to advertise their cause. T-shirts can also be bought at concerts and sporting events. Some of the best-selling t-shirts include I Heart NY, Vote for Pedro, Superman, Rolling Stones, and Hard Rock Café.

HOW TO OBSERVE #InternationalTShirtDay

On this day, people all around the world are encouraged to wear their favorite t-shirt. Here are some other ways to participate:

  • Count how many t-shirts you own.
  • Think about the role of t-shirts in our culture.
  • Make tie-dye t-shirts with your kids.
  • Come up with a slogan or message you’d like to have on a t-shirt.

Take a selfie of yourself in your favorite t-shirt and share it on social media with #InternationalTShirtDay.


In 2008, an online merchandise company called Spreadshirt began International T-Shirt Day. The company has its headquarters in both Germany and the United States. For this reason International T-Shirt Day is held on June 20th in the United States and June 21st in Europe. These dates signify the first day of summer in these parts of the world.

2021 June 20
2022 June 21

2023 June 21
2024 June 20
2025 June 21
2026 June 21
2027 June 21
2028 June 20
2029 June 21

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