How long ago did the Curtis boys' parents die In the outsiders?

In "The Outsiders," the Curtis boys' parents died in a car crash about eight months prior to the events of the story. Their deaths left the three brothers—Darrel, Sodapop, and Ponyboy—responsible for each other, highlighting their struggles and the challenges of growing up without parental guidance. This loss is a central element in shaping their relationships and the dynamics within their family.