A standard utility.
As an alternate, you could do the following, and press
Setting the date and time of a file ∞
Problem: Given the time/date format from MediaWiki's history page,
2009-03-26T16:24:08, set the time/date of a file.
\touch -d 2009-03-26T16:24:08 filename.ext
FIXME - I think this doesn't set things properly.