Conditional format range based on date

Hi all,

I have a monthly calender, with each month on its own sheet. I have a sheet named Holidays, which list the holidays. I have been able to use conditional format and highlight the dates in the months the holidays fall on, but I would like to highlight a range of cells below the date on monthly sheet. I have attached a sample of what I have and would like to achieve. I am not much good at using VBA, but would not be against using it either. Thanks for any help.
Steve