ok..never mind. I just realised the Topics weren't necessarliy 'created' on the specific day...just 'responded to. So..it makes my little project redundant.
i didn't realise until Ihad posted the links & clicked on them myself. Bummer. I have a suggestion for the administrators. Perhaps when filtering for posts...it might be nice if we had a 'month' option to search through. I don't know if it's feasible..just a suggestion.