MPY question about timestamp/date in msgs

Hi! Im trying to read the timestamp and the date (original) of a message locate 
in my jam database (of course im talking about, lets say, a random fidonet 
message) in python/mystic... do you guys know a simple example of that? I think 
I need to read the "header", but dont know how to do it and how to read 
specifically the date and hour.

Thanks!

... A bard with a 10 charisma.  Not good.