File version at a specific date?

Hi,

I failed to find in the documentation how to look to a file content at some moment in a past.

Something like this: $ git checkout master~2 Makefile when I specify not the revisions numbers ago the file was (~2), but the time, for example "2005-12-12 00:00:00" or something like this.

Where should I look at?

Thanks in advance! Alexander.