1. On April 27, 1846, the Michigan legislature passed a bill to establish a statewide system of public schools. This was a significant step forward in education reform and ensured that children in all parts of Michigan had access to education.

2. In 1950, the Detroit Tigers played their first-ever day game at Briggs Stadium (now known as Tiger Stadium) on April 27. They defeated the New York Yankees 5-3 in front of a crowd of over 47,000 fans.

3. On April 27, 1967, a major riot broke out in the city of Detroit. The riots lasted for five days and resulted in 43 deaths, over 1,100 injuries, and more than 2,000 buildings being destroyed or damaged. The event had a significant impact on the city and its residents.

4. On April 27, 1981, the J.W. Westcott II became the world's first floating post office. The vessel has been in operation for over 140 years and continues to provide postal services to ships passing through the Detroit River.

5. In 2018, Michigan State University held its first-ever tuition-free day on April 27. The event was designed to help offset the rising cost of tuition for students and showcased the university's commitment to making higher education accessible to all.