Macro to find day

Hi

I have a requirement like i need to find the no of days in a week and in that days i need to find thursday.

I see there is macro function to find no of days i,e BUCKET_WDAY(), also there is macro function WEEK() which returns nos 1 to 7 where 1= monday etc.

can any one help me on how to build up the logic.

your immediate response is highly appreciable.

Regards

Vijaya