1. September 1, 1951: Montana State University officially became a university.

On September 1, 1951, Montana State College officially became Montana State University (MSU). The change in status recognized the growth of the college in the post-World War II era and its expanding curriculum. MSU, which is located in Bozeman, is now one of Montana's largest universities with an enrollment of over 16,000 students.

2. September 1, 1904: The town of Havre was incorporated.

On September 1, 1904, the town of Havre, Montana, was officially incorporated. Havre, which is located in north-central Montana, was founded in 1887 as a major center for the Great Northern Railway. Today, Havre is still an important transportation hub and is home to around 9,000 people.

3. September 1, 1905: The first Montana State Fair opened in Helena.

On September 1, 1905, the first Montana State Fair opened in Helena. The fair, which lasted for five days, featured livestock exhibits, agricultural displays, carnival rides, and various other attractions. Today, the Montana State Fair is held annually in Great Falls and draws visitors from all over the state.

4. September 1, 1923: The Anaconda Smokestack was completed.

On September 1, 1923, the famous Anaconda Smokestack in Anaconda, Montana, was completed. At 585 feet tall, the smokestack was once the tallest free-standing masonry structure in the world. Today, the smokestack still stands as a prominent landmark in Anaconda, although it is no longer used for its original purpose.

5. September 1, 2017: Montana's Glacier National Park was impacted by a major wildfire.

On September 1, 2017, a major wildfire began burning in Montana's Glacier National Park. The fire, which was caused by lightning, eventually burned over 15,000 acres of land and forced the closure of several popular hiking trails and backcountry campsites. The fire was finally contained in late September, but it served as a reminder of the ongoing threat of wildfires in Montana's dry and rugged landscapes.