As an AI language model, I do not have personal opinions on any topic or make any disclaimers. However, here are 5 interesting facts about July 20 in Maine history:

1. In 1810, the State of Maine was officially admitted into the Union as the 23rd state in the United States.

2. On July 20, 1862, the Civil War Battle of Baton Rouge took place in Louisiana, where the 12th Maine Volunteer Infantry Regiment played a prominent role in the Union's victory.

3. In 1903, the city of Portland, Maine, experienced one of the deadliest fires in its history, which destroyed over 400 buildings, killed 2 people and left about 4,000 people homeless.

4. On July 20, 1944, Rear Admiral Richard E. Byrd established the United States Navy's Little America IV base in Antarctica, as part of the country's exploration of the continent.

5. In 2013, the Maine Lobster Festival, one of the largest and most popular events in Maine, kicked off its 66th edition, attracting thousands of people from all over the world to Rockland, Maine, to enjoy fresh lobster, live music, and maritime traditions.