Wyoming Day is a regional holiday celebrated in the state of Wyoming, United States. Held annually on December 10th, it marks the day in 1869 when Wyoming officials approved the first law in U.S. history explicitly granting women the right to vote. This pioneering act laid the foundation for the movement towards gender equality in the United States, earning Wyoming the nickname 'The Equality State'.

Wyoming Day is not a public holiday, but it is a significant observance in the state. Schools, local institutions, and communities commemorate the occasion with educational talks, presentations, and symbolic activities that honor the bold step taken in 1869. Many utilize this day to teach young generations about the importance of women's rights, while also celebrating the unique history and cultural heritage of Wyoming.

The significance of Wyoming Day extends beyond the confines of the state. It serves as a reminder of Wyoming's crucial role in the fight for gender equality and voting rights in the United States. It's a day when residents proudly celebrate their place in history and their ongoing commitment to equality for all. While the holiday may not be widely recognized nationally, it's a day of great importance and pride to those in the 'Cowboy State'.