1. Labor Day once fell on May 1 in Oklahoma
In 1921, Labor Day was celebrated on May 1. However, in 1952, the date was changed to the first Monday of September to allow for a three-day weekend.

2. Oklahoma's statehood day is May 1
On May 1, 1907, Oklahoma became the 46th state to join the United States.

3. International Workers' Day has been celebrated in Oklahoma
May 1 is International Workers' Day, which is celebrated worldwide as a day to recognize the contributions of workers. In Oklahoma, the day has been celebrated with rallies and protests in support of workers' rights.

4. May 1 marks the beginning of tornado season in Oklahoma
May is the start of tornado season in Oklahoma, which can bring dangerous storms and devastating tornadoes.

5. A major disaster struck Oklahoma on May 1, 1999
On May 1, 1999, an outbreak of tornadoes hit Oklahoma, causing widespread damage and killing 44 people. The tornadoes, which were part of a larger outbreak across the Midwest, caused over $1 billion in damage.