1. On September 30, 1890, Wyoming became the 44th state to join the United States. It was the first state to grant women the right to vote, and its state flag features a bison and a seal with the state motto "Equal Rights."

2. The first post office was established in Cheyenne, Wyoming on September 30, 1867. Cheyenne was founded as a railroad town in 1867, and quickly became the capital city of Wyoming Territory.

3. Wyoming's first nationally designated wilderness area, the Wind River Range Wilderness, was created on September 30, 1964. The Wind River Range is known for its stunning mountain vistas, sparkling alpine lakes, and diverse wildlife.

4. On September 30, 2004, Wyoming achieved the dubious distinction of having the highest rate of suicide in the United States. Despite its natural beauty and outdoor recreation opportunities, Wyoming has struggled with high suicide rates, particularly among men in rural areas.

5. In 2017, a group of Wyoming residents set a Guinness World Record for the largest snowball fight, with 8,200 participants throwing snowballs at each other for 35 minutes. The event took place on September 30 in Jackson Hole, Wyoming, and raised money for a local charity.