MDBCs 17 Jul 2025
July 17th 2025 - Holidays and Observances
(click on the day for details)
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Christian feast day:
- Alexius of Rome (Western Church)
- Andrew Zorard
- Cynehelm
- Cynllo
- Inácio de Azevedo
- Jadwiga of Poland
- Magnus Felix Ennodius
- Marcellina
- Martyrs of Compiègne
- Blessed Pavel Peter Gojdič (Greek Catholic Church)
- Pope Leo IV
- Romanov sainthood (Russian Orthodox Church)
- Speratus and companions
- William White (Episcopal Church)
- July 17 (Eastern Orthodox liturgics)
- Constitution Day (South Korea)
- Gion Matsuri (Yasaka Shrine, Kyoto)
- Independence Day (Slovakia)
- International Firgun Day (International)
- King's Birthday (Lesotho)
- U Tirot Sing Day (Meghalaya, India)
- World Day for International Justice (International)
- World Emoji Day (International)
Observances (click on the day, BD, or week for details)
National Lottery Day
National Peach Ice Cream Day
National Tattoo Day
Wrong Way Corrigan Day
Angela Merkel’s Birthday
David Hasselhoff’s Birthday
Jeremih Felton’s Birthday
Kade Skye’s Birthday
Kali Uchis’s Birthday
Luke Bryan’s Birthday
Billie Lourd
Fun Observances
Yellow Pig Day
July 17 is Yellow Pig Day. Despite its name, the day is not a celebration of the porcine world, but a celebration of the number 17.
The unofficial holiday was created in the early 1960s by Princeton mathematics students, David Kelly and Michael Spivak, while working on the special properties of the number 17.
It is unclear why the day was called Yellow Pig Day or what a yellow pig has to do with the number 17, though legend has it that it is in reference to David Kelly's collection of yellow pigs. The mascot of the holiday, the yellow pig, has 17 toes, 17 eyelashes, and 17 teeth.
A Number With Special Properties
17 is a prime number that has significance in mathematics. It is the sum of the first four prime numbers - 2, 3, 5, and 7. A prime number is a number that can only be divided by 1 and by itself. Several studies have shown that when people are asked to choose a number between 1 and 20, a majority of people choose the number 17.
17 is not always a special number. In Italy, for example, 17 is considered to an unlucky number.
How to Celebrate?
- Gift the mathematicians in your life marzipan Yellow Pig candies or yellow pig plush toys.
- Do 17 acts of kindness during the day.
- Sing Yellow Pig carols.
Did You Know...
...that the fear of the number 17 is called heptadecaphobia.
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At the nudist colony for communists, two men are sitting on the front porch.
One turns to the other and says, "I say, have you read Marx?"
The other replies, "Yes … I believe it's these wicker chairs."
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An old farmer is inconsolable after his dog goes missing. He takes out an ad in the newspaper,
but two weeks later, there’s still no sign of the mutt.
“What did you write in the ad?” his wife asks. “
‘Here, boy,’ ” he replies.
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A panda walks into a bar and gobbles some beer nuts. Then he pulls out a gun, fires it in the air, and heads for the door.
"Hey!" shouts the bartender,
but the panda yells back, "I'm a panda. Google me!"
Sure enough, panda: "A tree-climbing mammal with distinct black-and-white coloring. Eats shoots and leaves."
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This cowboy walks into a bar and orders a beer.
His hat is made of brown wrapping paper, his shirt and vest are made of waxed paper, and his chaps, pants, and boots are made of tissue paper.
Pretty soon they arrest him for rustling.
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sandrewn
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