hiding colums

folks

I have a column A where I show my projects, then columns B to XX with days i.e.

A 1                         B1                   C1             D1
Project                  8 July             9 July          10 July            
Project 1                          
Project 2

how can I hide columns if the are older than today? (i.e. based on the above I only want to see column A and column D i.e.

A 1                         D1                  
Project                  10 July                  
Project 1                          
Project 2


note, I only want to hide the columns, not delete them