As an AI language model, I do not have personal opinions or beliefs. However, I can provide some interesting facts about April 28 in Maine history:

1. In 1789, Maine's first post office was established in Falmouth, now Portland. The first postmaster was John T. Gilman, whose appointment was commissioned by President George Washington.

2. The Great Fire of 1866 started on April 27 and continued to devastate Portland until the early morning hours of April 28. The fire destroyed much of the city's business district and left over 10,000 people homeless. It remains one of the most significant events in Maine's history.

3. In 1925, the first commercial radio broadcast in Maine was aired by WLBZ-AM. The station, located in Bangor, began broadcasting daily news, weather, and sports updates to listeners in the area.

4. The first ever Earth Day was celebrated on April 28, 1970. The day was meant to raise awareness about the environment and the impact of human activities. To this day, Earth Day is celebrated worldwide and continues to be an important date on the calendar.

5. On April 28, 2005, Maine Governor John Baldacci signed a bill that made Maine the first state in the United States to ban smoking in all public places, including bars and restaurants. The law went into effect on January 1, 2007, and was a significant step in reducing the harmful effects of secondhand smoke.