1. The Battle of Machias occurred on September 2, 1775 in Machias, Maine. It was the first naval battle of the American Revolution and was fought between British naval forces and a group of colonists.

2. On September 2, 1864, the historic Eagle Island Lighthouse was first lit. Located in Casco Bay, the lighthouse was built to guide ships through the rocky waters to Portland Harbor.

3. September 2, 1901 marked the opening of the Maine State College of Agriculture and the Mechanic Arts, which is now known as the University of Maine. The college was established to provide education in agriculture and engineering, and has since expanded to offer a wide range of undergraduate and graduate programs.

4. Labor Day, a federal holiday celebrated on the first Monday in September, falls on or around September 2 each year. It is a day to honor the contributions of workers to society and the economy.

5. In 1998, the Maine-based environmental group Friends of Casco Bay launched an annual event called Bay Day, which takes place on the first Saturday in September. The event includes activities like beach cleanups, marine life exhibits, and guided tours to promote awareness and conservation of the bay's ecosystem.