1. On September 7, 1828, the first American flag was raised in Santa Fe, New Mexico. This event marked the end of Spanish rule in the region and signaled the beginning of American rule.

2. On September 7, 1940, the U.S. Army Air Corps established the Alamogordo Bombing and Gunnery Range in southern New Mexico. This site was later used as a testing ground for the atomic bomb during World War II.

3. September 7, 1956, saw the opening of Kirtland Air Force Base in Albuquerque, New Mexico. This military installation is now home to the Air Force Nuclear Weapons Center and the Air Force Research Laboratory.

4. On September 7, 1967, the New Mexico Museum of Natural History and Science first opened its doors to the public. The museum houses a wide variety of exhibits on the state's natural history, including displays on dinosaurs, fossils, and geology.

5. September 7, 2013, saw the opening of the Spaceport America Visitor Center in Las Cruces, New Mexico. This facility provides visitors with a look at the state's burgeoning commercial space industry and the role that Spaceport America plays in it.