Question

I have a problem that i have been whacking my head over. No matter what day of the week it is I need the date thats 2 mondays ago. For example, if today is tuesday I need the monday before previous. I am using MS access to do this.

Answer 1

I think you can use the Weekday() function @mwolfe02 mentioned, and combine it with the DateAdd() function. In these sample statements, I also used an IIf() function to tell DateAdd how many days to subtract from the starting date.

? DateAdd("d", IIf(Weekday(#2011/11/20#, 2) = 1, _
-14, -6 - Weekday(#2011/11/20#, 2)), #2011/11/20#)
11/7/2011 

? DateAdd("d", IIf(Weekday(#2011/11/21#, 2) = 1, _
-14, -6 - Weekday(#2011/11/21#, 2)), #2011/11/21#)
11/7/2011 

? DateAdd("d", IIf(Weekday(#2011/11/22#, 2) = 1, _
-14, -6 - Weekday(#2011/11/22#, 2)), #2011/11/22#)
11/14/2011 

See Access’ online help topics for those functions.

You didn’t indicate whether you want to do this from VBA code or in a query. And you didn’t tell us where the date value comes from. So I can’t give anything more specific.

Edit: To do this in a query using the current date, try it this way:

SELECT
    DateAdd("d", IIf(Weekday(Date(), 2) = 1, -14, -6 - Weekday(Date(), 2)), Date())
    AS TwoMondaysAgo;

If you’re running the query from within an Access application session, you could create a less nasty-looking query by building a VBA user-defined function to do the DateAdd computation, and then calling the udf in your query.