1. On September 28, 1895, the University of Wyoming was founded in Laramie. It was the first university in the state of Wyoming and opened its doors to students in 1887.

2. In 1920, the town of Casper was hit by a devastating tornado on September 28th. The tornado was one of the deadliest in Wyoming's history, causing 13 deaths and extensive damage to the town.

3. On September 28, 1955, Wyoming became the first state in the US to allow women to serve on juries. This landmark decision was made by the Wyoming Supreme Court in the case of Laramie v. Hageman.

4. In 1978, a major flood hit the town of Thermopolis on September 28th, causing extensive damage to the town's infrastructure. The floodwaters destroyed homes, businesses, and roads, and left many residents displaced.

5. On September 28, 2004, the Wyoming State Museum in Cheyenne opened a new exhibit showcasing the state's rich history and cultural heritage. The museum is home to thousands of artifacts, including fossils, Native American artifacts, and historical documents.