Read about history, remember and learn. Pick out a good one:
https://en.wikipedia.org/wiki/September_30
1962 – Mexican-American labor leader César Chávez founds the National Farm Workers Association.
2016 – Hurricane Matthew becomes a Category 5 hurricane, making it the strongest hurricane to form in the Caribbean Sea since 2007.
https://en.wikipedia.org/wiki/Cesar_Chavez
Cesar Chavez (born César Estrada Chávez, locally [ˈsesaɾ esˈtɾaða ˈtʃaβes]; March 31, 1927 – April 23, 1993) was an American labor leader and Latino American civil rights activist. Along with Dolores Huerta, he co-founded the National Farm Workers Association, later renamed the United Farm Workers (UFW) union.