E.L. Doheny brings in the first producing oil well in Southern California [Source: California: An Island on the Land by Carey McWilliams.]
The City of Cypress celebrates the opening of Mackay Park, the City’s first new park in twenty years. It is built on the southwest corner of what had been Cypress School District’s Mackay Elementary School. The remainder of the property was developed into single-family detached homes.
The withdrawal of the United States from the Paris Climate Accord becomes official. [Sources: CNN, NY Times, Wikipedia.]