How to see when "svn up" was issued to update to a given revision

Question

Is it possible to check when in time a file/working copy was updated locally to a specific revision (i.e. even if local files got overwritten by say further revision updates)?

Answer 1

1. svn up updates Working Copy, not repository
2. No, you can't check it (at least internally in svn), except checking timestamp of file (with use-commit-times disabled)