1. On March 27, 1889, the Cherokee Outlet opened for settlement, allowing thousands of homesteaders to claim land in what is now northwestern Oklahoma. The land rush was one of several that took place in Oklahoma Territory in the late 19th century.

2. In 1933, Oklahoma Governor William "Alfalfa Bill" Murray signed a law authorizing the construction of Lake Murray, a popular recreational destination in southern Oklahoma. The lake was named for Governor Murray and was the first major lake built by the state of Oklahoma.

3. March 27, 1932 marked the opening of the Oklahoma City Zoo, which has since become a beloved attraction for visitors and locals alike. The zoo is home to over 1,800 animals representing nearly 500 species.

4. On March 27, 1941, the Air Corps Advanced Flying School at Altus Army Airfield officially opened for training. The base would later become Altus Air Force Base, which remains an important hub for military transport operations.

5. In 1964, the Oklahoma City Thunder (then known as the Seattle SuperSonics) played their first game as a franchise. The Thunder have since become a major part of Oklahoma sports culture, winning the Western Conference championship in 2012 and making multiple playoff appearances.