There are conflicting reports on when Jason was born. Today, on other horror websites, I have seen 1946 and 1947. If it were 1946, this fictional character would be 70. According to my Friday the 13th timeline, I did not explain Jason’s age or when he was born. But in my research, Pamela Voorhees was born in 1930 and has Jason when she was 16. That would make it 1946. June 13th, 1946 was in-fact a Friday…so yeah, Happy 70th Birthday to Jason Voorhees!