Cal. Evidence Code § 640 : California Evidence Code — Burden Of Proof; Burden Of Producing Evidence; Presumptions And Inferences — Presumptions And Inferences — Presumptions Affecting The Burden Of Producing Evidence — Date of writing Date: 31 Aug 2016 TEXT PDF Current through the 2016 Legislative Session A writing is presumed to have been truly dated. Ca. Evid. Code § 640