Could you check if this happens with other PDF-creating programs (based on cairo), too? Because if it is, then this is either a mis-use of the PDF creation API (lack of setting that date) or a problem within cairo (if it is specified to use the current date).
Could you check if this happens with other PDF-creating programs (based on cairo), too? Because if it is, then this is either a mis-use of the PDF creation API (lack of setting that date) or a problem within cairo (if it is specified to use the current date).