[pdftex] current filename and current filedate ?

[ivo welch]

hi:  I would like to obtain not only the date/time at which pdflatex is 
running, but I would like to obtain the date+time+name of the current 
file (which can be an include'd file; each one is a chapter, so this 
would make for a nice "this chapter was last edited on dec 3, 2004".  I 
am not using revision control, or any other fancy mechanism.   is this 
possible?  help appreciated.  regards, /iaw