October 3, 2023, is a Tuesday and there are several holidays and observances on this day. Here are some of them:

• National Boyfriend Day: This day is intended to celebrate boyfriends and show them how important they are to their partners.

• Mean Girls Day: This day is dedicated to the cult movie "Mean Girls" and is celebrated by fans of the movie.

• National Techies Day: This day is intended to celebrate and recognize the contributions of techies to society.

• National Fruit at Work Day: This day is intended to encourage people to eat more fruit at work and to promote healthy eating habits.

• Sukkot: This is a Jewish observance that lasts for seven days and commemorates the Israelites journey through the wilderness after the exodus from Egypt.

• Global Smoothie Day: This day is intended to celebrate smoothies and promote their health benefits.

• Look at the Leaves Day: This day is intended to encourage people to appreciate the beauty of autumn leaves.

• Boqueron Battle Victory Day: This day is a public holiday in Paraguay that commemorates the victory of the Paraguayan army over the Bolivian army in the Battle of Boqueron during the Chaco War.

• Francisco Morazáns Day: This day is a public holiday in Honduras that commemorates the birth of Francisco Morazán, a Honduran politician and military leader who played a key role in Central American politics in the 19th century.

• Iraqi Independence Day: This day is a public holiday in Iraq that commemorates the countrys independence from Britain in 1932.

• Mid-Autumn Festival: This is a Chinese festival that celebrates the harvest and the full moon.

• South Korea National Foundation Day: This day is a public holiday in South Korea that commemorates the founding of the Korean nation in 2333 BC.

Overall, October 3, 2023, is a day with a variety of holidays and observances, ranging from celebrations of relationships and healthy eating habits to commemorations of historical events and cultural traditions.