1. Maine became a state on September 4, 1820. At the time, it was the 23rd state in the United States. Maine was originally a part of Massachusetts, but became its own state due to economic and cultural differences.
2. On September 4, 1944, the World War II Liberty ship SS Charles W. Wooster sank off the coast of Maine. The ship was carrying ammunition and gasoline, and when it caught fire and exploded, it caused a massive explosion visible from the coast. All 68 crew members were killed.
3. In 1971, September 4 was officially declared "Stephen King Day" in the state of Maine. The famous horror author was born in the town of Portland, Maine in 1947, and has set many of his books in the state.
4. On September 4, 2004, the town of Lubec, Maine celebrated the 200th anniversary of its founding. Lubec is the easternmost town in the contiguous United States, and is known for its stunning coastal views and historic architecture.
5. September 4 also marks the annual "Maine Open Lighthouse Day", where dozens of lighthouses across the state open their doors to visitors. This event allows tourists and locals alike to see the inside of these historic buildings and learn about their role in Maine's maritime history.