1. Ohio became a state: December 30, 1803 marks an important day in Ohio history, as it was the day Ohio officially became the 17th state in the Union. At the time, Ohio was home to around 60,000 residents.

2. Wright Brothers' first flight: On December 30, 1903, the Wright Brothers successfully made the first powered flight of their aircraft at Kitty Hawk, North Carolina. While this may not be an Ohio-specific event, the Wright Brothers were from Dayton, Ohio and invented and tested many of their early aircraft there.

3. Ohio's deadliest fire: The deadliest fire in Ohio history occurred on December 30, 1978 in Cincinnati. The blaze at the Beverly Hills Supper Club killed 165 people and injured over 200 more. The tragedy led to significant safety reforms in public venues across the nation.

4. Ohio State football success: Ohio State has had great success on the gridiron on December 30, winning five of their six December 30 bowl game appearances. This includes back-to-back victories in the Fiesta Bowl in 2002 and 2003.

5. Rutherford B. Hayes' inauguration: On December 30, 1876, Rutherford B. Hayes was sworn in as the 19th President of the United States. Hayes was an Ohio native who had served as Governor of Ohio from 1868 to 1872. His presidency was marked by a controversial election in which he narrowly defeated Samuel Tilden.